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array-memoize library: Memoization combinators using arrays for finite sub-domains of functions
PortFusion program: high-performance distributed reverse / forward proxy & tunneling for TCP

-

tslib library: -

.NET

hs-dotnet library: Pragmatic .NET interop for Haskell
language-cil library: Manipulating Common Intermediate Language AST
Salsa library: A .NET Bridge for Haskell

Accessibility

bitspeak program: Proof-of-concept tool for writing using binary choices.
hsay program: (ab)Use Google Translate as a speech synthesiser
workflow-osx library and program: a "Desktop Workflow" monad with Objective-C bindings

ACME

ACME library: Essential features
acme-all-monad library: A monad which is powerful enough to interpret any action
acme-box library and program: A full featured empty project
acme-cadre library: car, cdr and more
acme-cofunctor library: A Cofunctor is a structure from category theory dual to Functor
acme-colosson library: Determines whether it is numberwang.
acme-cutegirl library and program: Maybe gives you a cute girl
acme-dont library: A don't construct
acme-everything library: Install everything.
acme-flipping-tables library: Stop execution with rage.
acme-grawlix library: More readable names for commonly used symbols
acme-hq9plus library: An embedded DSL for the HQ9+ programming language
acme-inator library and program: Evil inventions in the Tri-State area
acme-io library: The only true way to do IO in Haskell!
acme-lolcat library: LOLSPEAK translator
acme-lookofdisapproval library: Express your disapproval
acme-memorandom library: Memoized random number generation
acme-microwave library: The eighth wonder of the world, kitchen math!
acme-miscorder library: Miscellaneous newtypes for orderings of discutable use.
acme-missiles library: Cause serious international side effects.
acme-now library: An interface to the philosophical and metaphysical "now"
acme-numbersystem library: Define the less than and add and subtract for nats
acme-omitted library: A name for omitted definitions
acme-one library: The identity element of package dependencies
acme-php library: The flexibility of Haskell and the safety of PHP
acme-pointful-numbers library: Make more than one point in numeric literals
acme-realworld library: Primitives for manipulating the state of the universe
acme-safe library: Safe versions of some infamous haskell functions such as fromJust
acme-schoenfinkel library: Proper names for curry and uncurry
acme-strfry library: A binding to the glibc strfry function.
acme-stringly-typed library: Stringly Typed Programming
acme-strtok library: A Haskell port of the C/PHP strtok function
acme-timemachine library: An easy way to perform and unperform IO and other stateful actions.
acme-year library: Get the current year
acme-zero library: The absorbing element of package dependencies
empty library: Ceci n'est pas une package
hero-club-five-tenets library and program: Think back of the five tenets of hero club
monadacme library: The Acme and AcmeT monads.
plumbers library: Pointless plumbing combinators
roller library and program: Playing with applicatives and dice!
yes-precure5-command library and program: Extended yes command to reproduce phrases in Yes! Precure 5.

Adjunctions

adjunctions library: Adjunctions and representable functors

AI

attoparsec-arff library: An ARFF file parser using Attoparsec
bpann library: backpropagation neuronal network
CarneadesDSL library: An implementation and DSL for the Carneades argumentation model.
CarneadesIntoDung library and program: A translation from the Carneades argumentation model into Dung's AFs.
creatur library: Framework for artificial life experiments.
csp library: Discrete constraint satisfaction problem (CSP) solver.
CV library: OpenCV based machine vision library
cv-combinators library and program: Functional Combinators for Computer Vision
Dung library and program: An implementation of the Dung argumentation frameworks.
Etage library: A general data-flow framework
GA library: Genetic algorithm library
genprog library: Genetic programming library
HasGP library: A Haskell library for inference using Gaussian processes
HaskellNN library: High Performance Neural Network in Haskell
HaVSA library and program: An implementation of the Version Space Algebra learning framework.
heukarya library: A genetic programming based on tree structure.
hfann library and program: Haskell binding to the FANN library
hgalib library: Haskell Genetic Algorithm Library
hnn library: A reasonably fast and simple neural network library
HOpenCV library and program: A binding for the OpenCV computer vision library
hopfield library and programs: Hopfield Networks, Boltzmann Machines and Clusters
hpylos program: AI of Pylos game with GLUT interface.
HSGEP library and programs: Gene Expression Programming evolutionary algorithm in Haskell
hVOIDP library and program: Optimal variable selection in chain graphical model.
instinct library: Fast artifical neural networks
keera-posture program: Get notifications when your sitting posture is inappropriate.
liblinear-enumerator library: liblinear iteratee.
markov-processes library: Hidden Markov processes.
mines program: Minesweeper simulation using neural networks
moo library: Genetic algorithm library
neet library: A NEAT library for Haskell
nondeterminism library: A monad and monad transformer for nondeterministic computations.
opencv-raw library: Raw Haskell bindings to OpenCV >= 2.0
sandlib library: SAND data serialization and manipulation library
simple-genetic-algorithm library and program: Simple parallel genetic algorithm implementation
simple-genetic-algorithm-mr library and program: Simple parallel genetic algorithm implementation
simple-neural-networks library and programs: Simple parallel neural networks implementation
SimpleEA library: Simple evolutionary algorithm framework.
SoccerFun library and program: Football simulation framework for teaching functional programming
SoccerFunGL library and programs: OpenGL UI for the SoccerFun framework
svm library: A support vector machine written in Haskell
svm-simple library: Medium level, simplified, bindings to libsvm

Algebra

agum library and program: Unification and Matching in an Abelian Group
algebra library: Constructive abstract algebra
algebraic library: General linear algebra structures.
cayley-dickson library: Complex numbers, quaternions, octonions, sedenions, etc.
clipper library: Haskell API to clipper (2d polygon union/intersection/xor/clipping API)
cmu library and program: Unification in a Commutative Monoid
constructive-algebra library: A library of constructive algebra.
eigen library: Eigen C++ library (linear algebra: matrices, sparse matrices, vectors, ...
fadno-braids library: Braid representations in Haskell
finite-field library: Finite Fields
groups library: Haskell 98 groups
integer-gmp library: Integer library based on GMP
linear library: Linear Algebra
linear-accelerate library: Instances to use linear vector spaces on accelerate backends
linear-grammar library: A simple grammar for building linear equations and inclusive inequalities.
magma library: magma is an algebraic structure consisting a set together with an binary operation.
metamorphic library: metamorphisms: ana . cata or understanding folds and unfolds
monoid-absorbing library: A library for (left, right) zero monoids and backtracking with cut
monoid-subclasses library: Subclasses of Monoid
nats library: Natural numbers
semigroups library: Anything that associates
semigroups-actions library: Semigroups actions
sign library: Arithmetic over signs and sets of signs
simplex-basic library: Very basic simplex implementation.
subhask library: Type safe interface for programming in subcategories of Hask
unification-fd library: Simple generic unification algorithms.
yap library: yet another prelude - a simplistic refactoring with algebraic classes

Algorithm

kmeans-par library: Sequential and parallel implementations of Lloyd's algorithm.
pathfinding library: pathfinding in grid and graphs

Algorithm Visualization

treeviz library and program: Visualization of computation decomposition trees.

Algorithms

Adaptive library and program: Library for incremental computing.
adp-multi library and programs: ADP for multiple context-free languages
adp-multi-monadiccp library and program: Subword construction in adp-multi using monadiccp
ADPfusion library and programs: Efficient, high-level dynamic programming.
aeson-diff library and programs: Extract and apply patches to JSON documents.
AlignmentAlgorithms library: Collection of alignment algorithms
arithmoi library: Efficient basic number-theoretic functions. Primes, powers, integer logarithms.
binary-search library: Binary and exponential searches
Binpack library: Common bin-packing heuristics.
cmaes library: CMA-ES wrapper in Haskell
concorde library: Simple interface to the Concorde solver for the Traveling Salesperson Problem
concurrent-sa library: Concurrent simulated annealing system.
cubicspline library: Natural cubic spline interpolation.
DecisionTree library: A very simple implementation of decision trees for discrete attributes.
dgim library: Implementation of DGIM algorithm
Diff library: O(ND) diff algorithm in haskell.
DifferentialEvolution library: Global optimization using Differential Evolution
DimensionalHash library: An n-dimensional hash using Morton numbers.
dom-lt library: The Lengauer-Tarjan graph dominators algorithm.
DP library: Pragmatic framework for dynamic programming
dtw library: (Fast) Dynamic Time Warping
edit-distance library: Levenshtein and restricted Damerau-Levenshtein edit distances
edit-distance-vector library: Calculate edit distances and edit scripts between vectors.
eigen library: Eigen C++ library (linear algebra: matrices, sparse matrices, vectors, ...
epanet-haskell library: Haskell binding for EPANET
equivalence library: Maintaining an equivalence relation implemented as union-find using STT.
ersatz library and programs: A monad for expressing SAT or QSAT problems using observable sharing.
ersatz-toysat library and programs: toysat driver as backend for ersatz
fibonacci library: Fast computation of Fibonacci numbers.
funsat library and program: A modern DPLL-style SAT solver
GA library: Genetic algorithm library
garsia-wachs library: A Functional Implementation of the Garsia-Wachs Algorithm
genprog library: Genetic programming library
graph-generators library and program: Functions for generating structured or random FGL graphs
Graphalyze library: Graph-Theoretic Analysis library.
graphs library: A simple monadic graph library
GraphSCC library: Tarjan's algorithm for computing the strongly connected components of a graph.
gutenberg-fibonaccis library: The first 1001 Fibonacci numbers, retrieved from the Gutenberg Project.
heapsort library and programs: Heapsort of MArrays as a demo of imperative programming
hgal library: library for computation automorphism group and canonical labelling of a graph
hlcm library and programs: Fast algorithm for mining closed frequent itemsets
HMM library: A hidden markov model library
hmm library: A hidden markov model library
hps-kmeans library: A nice implementation of the k-Means algorithm.
Hungarian-Munkres library: A Linear Sum Assignment Problem (LSAP) solver
incremental-sat-solver library: Simple, Incremental SAT Solving as a Library
infinite-search library: Exhaustively searchable infinite sets.
iproute library: IP Routing Table
kmeans library: K-means clustering algorithm
KMP library: Knuth–Morris–Pratt string searching algorithm
lca library: O(log n) persistent on-line lowest common ancestor calculation without preprocessing
learning-hmm library: Yet another library for hidden Markov models
libgraph library: Store and manipulate data in a graph.
LinearSplit library: Partition the sequence of items to the subsequences in the order given
ListTree library: Trees and monadic trees expressed as monadic lists where the underlying monad is a list
majority library: Boyer-Moore Majority Vote Algorithm
markov-chain library: Markov Chains for generating random sequences with a user definable behaviour.
maximal-cliques library: Enumerate all maximal cliques of a graph.
mdp library and programs: Tools for solving Markov Decision Processes.
moo library: Genetic algorithm library
Munkres library: Munkres' assignment algorithm (hungarian method)
Munkres-simple library: Simple and typesafe layer over the Munkres package.
natural-sort library: User-friendly text collation
nonlinear-optimization-ad library and program: Wrapper of nonlinear-optimization package for using with AD package
Numbers library: An assortment of number theoretic functions
palindromes library and program: Finding palindromes in strings
patience library: Patience diff and longest increasing subsequence
pell library: Package to solve the Generalized Pell Equation.
pqueue-mtl library: Fully encapsulated monad transformers with queuelike functionality.
presburger library: A decision procedure for quantifier-free linear arithmetic.
primes library: Efficient, purely functional generation of prime numbers
PropLogic library and program: Propositional Logic
quadratic-irrational library: An implementation of quadratic irrationals
queuelike library: A library of queuelike data structures, both functional and stateful.
rangemin library: Linear range-min algorithms.
rspp library: A Rational Street Performer Protocol solver
sat programs: CNF SATisfier
sat-micro-hs program: A minimal SAT solver
satchmo-backends library: driver for external satchmo backends
satchmo-examples programs: examples that show how to use satchmo
satchmo-funsat library: funsat driver as backend for satchmo
satchmo-toysat library: toysat driver as backend for satchmo
seqalign library: Sequence Alignment
set-cover library and programs: Solve exact set cover problems like Sudoku, 8 Queens, Soma Cube, Tetris Cube
sgd library: Stochastic gradient descent
smartGroup library: group strings or bytestrings by words in common
spacefill library: Generators for space-filling curves.
stable-marriage library: algorithms around stable marriage
svm-simple library: Medium level, simplified, bindings to libsvm
teams library: Graphical modeling tools for sequential teams
toysolver library and programs: Assorted decision procedures for SAT, Max-SAT, PB, MIP, etc
TrieMap library: Automatic type inference of generalized tries with Template Haskell.
twentyseven library and program: Rubik's cube solver
unification-fd library: Simple generic unification algorithms.
union-find library: Efficient union and equivalence testing of sets.
union-find-array library: union find data structure
wordsearch library and program: A word search solver library and executable
yices-easy library: Simple interface to the Yices SMT (SAT modulo theories) solver.

Anatomy

teeth library: Dental data types

Animation

cal3d library: Haskell binding to the Cal3D animation library.
cal3d-examples programs: Examples for the Cal3d animation library.
cal3d-opengl library: OpenGL rendering for the Cal3D animation library

AOP

effective-aspects library: A monadic embedding of aspect oriented programming
effective-aspects-mzv library: A monadic embedding of aspect oriented programming, using "Monads, ...

API

arxiv library: A client for the Arxiv API
bighugethesaurus library: API wrapper for Big Huge Thesaurus
circlehs library: The CircleCI REST API for Haskell
factual-api library: A driver for the Factual API
gitter library: Gitter.im API client
leankit-api library: LeanKit API
messente library: Messente SMS Gateway
nylas library: Client for the Nylas API
oanda-rest-api library: Client to the OANDA REST API
plotserver-api library: Plotserver API
pokitdok library: PokitDok Platform API Client for Haskell
pubnub library and programs: PubNub Haskell SDK
quandl-api library: Quandl.com API library
rdioh library and programs: A Haskell wrapper for Rdio's API.
strive library: A client for the Strava V3 API.
tablestorage library: Azure Table Storage REST API Wrapper
textocat-api library: Unofficial Haskell SDK for Textocat API -- http://textocat.com
themoviedb library and program: Haskell API bindings for http://themoviedb.org
uploadcare library: Haskell client for Uploadcare.
weather-api library: Weather api implemented in haskell
zendesk-api library: Zendesk API for Haskell programming language.

Apple

hs-pkpass library: A library for Passbook pass creation & signing
maclight library and program: Control screen and keyboard backlights on MACs under Linux
workflow-osx library and program: a "Desktop Workflow" monad with Objective-C bindings

Application

cantor program: Application for analysis of java source code
epub-tools programs: Command line utilities for working with epub files
epubname program: Rename epub ebook files based on meta information
follower program: Follow Tweets anonymously
ghclive library and program: Interactive Haskell interpreter in a browser.
graph-rewriting-cl program: Interactive graph rewriting system implementing various well-known combinators
graph-rewriting-lambdascope program: Lambdascope, an optimal evaluator of the lambda calculus, ...
graph-rewriting-ski programs: Two evalutors of the SKI combinator calculus as interactive graph rewrite systems
graph-rewriting-trs program: Evaluate first-order applicative term rewrite systems interactively using graph reduction
graph-rewriting-ww program: ...
haskell-pdf-presenter program: Tool for presenting PDF-based presentations.
hscrtmpl program: Haskell shell script template
iptadmin program: web-interface for iptables
opn program: Open files or URLs using associated programs.
pb program: pastebin command line application
photoname program: Rename photo image files based on EXIF shoot date
squeeze library and program: A file-packing application.
sshtun program: Wrapper daemon to manage an ssh tunnel
themplate program: Project templating tool
thimk programs: Command-line spelling word suggestion tool
traypoweroff program: Tray Icon application to PowerOff / Reboot computer

Application Server

MFlow library: stateful, RESTful web framework
Saturnin library and program: Saturnin CI / Job System

Applicative

uu-interleaved library: ...

Argumentation

arguedit program: A computer assisted argumentation transcription and editing software.
CarneadesDSL library: An implementation and DSL for the Carneades argumentation model.
CarneadesIntoDung library and program: A translation from the Carneades argumentation model into Dung's AFs.
Dung library and program: An implementation of the Dung argumentation frameworks.

Artificial Intelligence

opencog-atomspace library: Haskell Bindings for the AtomSpace.

Arxiv

arxiv library: A client for the Arxiv API

Aspect Oriented Programming

effective-aspects library: A monadic embedding of aspect oriented programming
effective-aspects-mzv library: A monadic embedding of aspect oriented programming, using "Monads, ...

Atom

manatee-reader library and program: Feed reader extension for Manatee.

Attribute Grammars

XSaiga library and program: An implementation of a polynomial-time top-down parser suitable for NLP

Audio

HGamer3D-SFML-Binding library: SFML Binding for HGamer3D
libtagc library: Binding to TagLib C library.
MusicBrainz-libdiscid library: Binding to libdiscid by MusicBrainz
taglib-api library: An FFI layer over TagLib's C bindings
vivid library: Sound synthesis with SuperCollider

Automation

eibd-client-simple library: EIBd Client
workflow-osx library and program: a "Desktop Workflow" monad with Objective-C bindings

Avers

avers library: empty
avers-api library: Types describing the core and extended Avers APIs
avers-server library: Server implementation of the Avers API

Aviation

casa-abbreviations-and-acronyms library: CASA Abbreviations and Acronyms
casr-logbook library: CASR 61.345 Pilot Personal Logbook

AWS

amazonka library: Comprehensive Amazon Web Services SDK.
amazonka-apigateway library: Amazon API Gateway SDK.
amazonka-autoscaling library: Amazon Auto Scaling SDK.
amazonka-certificatemanager library: Amazon Certificate Manager SDK.
amazonka-cloudformation library: Amazon CloudFormation SDK.
amazonka-cloudfront library: Amazon CloudFront SDK.
amazonka-cloudhsm library: Amazon CloudHSM SDK.
amazonka-cloudsearch library: Amazon CloudSearch SDK.
amazonka-cloudsearch-domains library: Amazon CloudSearch Domain SDK.
amazonka-cloudtrail library: Amazon CloudTrail SDK.
amazonka-cloudwatch library: Amazon CloudWatch SDK.
amazonka-cloudwatch-events library: Amazon CloudWatch Events SDK.
amazonka-cloudwatch-logs library: Amazon CloudWatch Logs SDK.
amazonka-codecommit library: Amazon CodeCommit SDK.
amazonka-codedeploy library: Amazon CodeDeploy SDK.
amazonka-codepipeline library: Amazon CodePipeline SDK.
amazonka-cognito-identity library: Amazon Cognito Identity SDK.
amazonka-cognito-sync library: Amazon Cognito Sync SDK.
amazonka-config library: Amazon Config SDK.
amazonka-core library: Core data types and functionality for Amazonka libraries.
amazonka-datapipeline library: Amazon Data Pipeline SDK.
amazonka-devicefarm library: Amazon Device Farm SDK.
amazonka-directconnect library: Amazon Direct Connect SDK.
amazonka-dms library: Amazon Database Migration Service SDK.
amazonka-ds library: Amazon Directory Service SDK.
amazonka-dynamodb library: Amazon DynamoDB SDK.
amazonka-dynamodb-streams library: Amazon DynamoDB Streams SDK.
amazonka-ec2 library: Amazon Elastic Compute Cloud SDK.
amazonka-ecr library: Amazon EC2 Container Registry SDK.
amazonka-ecs library: Amazon EC2 Container Service SDK.
amazonka-efs library: Amazon Elastic File System SDK.
amazonka-elasticache library: Amazon ElastiCache SDK.
amazonka-elasticbeanstalk library: Amazon Elastic Beanstalk SDK.
amazonka-elasticsearch library: Amazon Elasticsearch Service SDK.
amazonka-elastictranscoder library: Amazon Elastic Transcoder SDK.
amazonka-elb library: Amazon Elastic Load Balancing SDK.
amazonka-emr library: Amazon Elastic MapReduce SDK.
amazonka-gamelift library: Amazon GameLift SDK.
amazonka-glacier library: Amazon Glacier SDK.
amazonka-iam library: Amazon Identity and Access Management SDK.
amazonka-importexport library: Amazon Import/Export SDK.
amazonka-inspector library: Amazon Inspector SDK.
amazonka-iot library: Amazon IoT SDK.
amazonka-iot-dataplane library: Amazon IoT Data Plane SDK.
amazonka-kinesis library: Amazon Kinesis SDK.
amazonka-kinesis-firehose library: Amazon Kinesis Firehose SDK.
amazonka-kms library: Amazon Key Management Service SDK.
amazonka-lambda library: Amazon Lambda SDK.
amazonka-marketplace-analytics library: Amazon Marketplace Commerce Analytics SDK.
amazonka-marketplace-metering library: Amazon Marketplace Metering SDK.
amazonka-ml library: Amazon Machine Learning SDK.
amazonka-opsworks library: Amazon OpsWorks SDK.
amazonka-rds library: Amazon Relational Database Service SDK.
amazonka-redshift library: Amazon Redshift SDK.
amazonka-route53 library: Amazon Route 53 SDK.
amazonka-route53-domains library: Amazon Route 53 Domains SDK.
amazonka-s3 library: Amazon Simple Storage Service SDK.
amazonka-sdb library: Amazon SimpleDB SDK.
amazonka-ses library: Amazon Simple Email Service SDK.
amazonka-sns library: Amazon Simple Notification Service SDK.
amazonka-sqs library: Amazon Simple Queue Service SDK.
amazonka-ssm library: Amazon Simple Systems Management Service SDK.
amazonka-storagegateway library: Amazon Storage Gateway SDK.
amazonka-sts library: Amazon Security Token Service SDK.
amazonka-support library: Amazon Support SDK.
amazonka-swf library: Amazon Simple Workflow Service SDK.
amazonka-test library: Common functionality for Amazonka library test-suites.
amazonka-waf library: Amazon WAF SDK.
amazonka-workspaces library: Amazon WorkSpaces SDK.
aws library and programs: Amazon Web Services (AWS) for Haskell
aws-cloudfront-signer library: For signing AWS CloudFront HTTP URL requests
aws-dynamodb-conduit library: Conduit-based interface for AWS DynamoDB
aws-ec2 library and programs: AWS EC2/VPC, ELB and CloudWatch client library for Haskell
aws-elastic-transcoder library and program: Haskell suite for the Elastic Transcoder service
aws-general library: Bindings for Amazon Web Services (AWS) General Reference
aws-kinesis library: Bindings for Amazon Kinesis
aws-performance-tests library and program: Performance Tests for the Haskell bindings for Amazon Web Services (AWS)
aws-sdk library: AWS SDK for Haskell
aws-sign4 library: Amazon Web Services (AWS) Signature v4 HTTP request signer
aws-sns library: Bindings for AWS SNS Version 2013-03-31
s3-signer library: Pre-signed Amazon S3 URLs
ses-html library: Send HTML formatted emails using Amazon's SES REST API with blaze
ses-html-snaplet library: Snaplet for the ses-html package
snaplet-ses-html library: Snaplet for the ses-html package
stratosphere library and programs: EDSL for AWS CloudFormation
wolf library and programs: Amazon Simple Workflow Service Wrapper.

Backup

bkr library and program: Backup utility for backing up to cloud storage services (S3 only right now)
multiplicity program: Wrapper program for duplicity, adding config files

Base

guid library: A simple wrapper around uuid

Benchmarking

BenchmarkHistory library and program: Benchmark functions with history
containers-benchmark program: Extensive benchmark suite for containers package.
criterion library and program: Robust, reliable performance measurement and analysis
criterion-plus library: Enhancement of the "criterion" benchmarking library
fibon programs: Tools for running and analyzing Haskell benchmarks

Binary

binary-parser library: A highly-efficient but limited parser API specialised for bytestrings

Bindings

bindings-codec2 library and program: Very low-level FFI bindings for Codec2
bindings-nettle library: bindings to nettle crypto library
gi-atk library: Atk bindings
gi-cairo library: cairo bindings
gi-gdk library: Gdk bindings
gi-gdkpixbuf library: GdkPixbuf bindings
gi-gio library: Gio bindings
gi-girepository library: GIRepository bindings
gi-glib library: GLib bindings
gi-gobject library: GObject bindings
gi-gst library: Gst bindings
gi-gstaudio library: GstAudio bindings
gi-gstbase library: GstBase bindings
gi-gstvideo library: GstVideo bindings
gi-gtk library: Gtk bindings
gi-javascriptcore library: JavaScriptCore bindings
gi-notify library: Notify bindings
gi-pango library: Pango bindings
gi-poppler library: Poppler bindings
gi-soup library: Soup bindings
gi-vte library: Vte bindings
gi-webkit library: WebKit bindings
gi-webkit2 library: WebKit2 bindings
gi-webkit2webextension library: WebKit2WebExtension bindings
workflow-osx library and program: a "Desktop Workflow" monad with Objective-C bindings

Bio

bbi library: Tools for reading Big Binary Indexed files, e.g., bigBed, bigWig
bioinformatics-toolkit library and programs: A collection of bioinformatics tools

Bioinformatics

a50 program: Compare genome assemblies
adp-multi library and programs: ADP for multiple context-free languages
adp-multi-monadiccp library and program: Subword construction in adp-multi using monadiccp
ADPfusion library and programs: Efficient, high-level dynamic programming.
AlignmentAlgorithms library: Collection of alignment algorithms
bamstats library and program: A program to extract various information from BAM alignmnet files.
BCMtools library and program: Big Contact Map Tools
bio library and programs: A bioinformatics library
bioace library: Library for reading ace assembly files
bioalign library: Data structures and helper functions for calculating alignments
Biobase library: Base library for bioinformatics
BiobaseBlast library: BLAST-related tools
BiobaseDotP library: Vienna / DotBracket / ExtSS parsers
BiobaseFasta library and program: conduit-based FASTA parser
BiobaseFR3D library: Importer for FR3D resources
BiobaseInfernal library: Infernal data structures and tools
BiobaseMAF library: Multiple Alignment Format
BiobaseNewick library: Newick file format parser.
BiobaseTrainingData library and program: RNA folding training data
BiobaseTurner library: Import Turner RNA parameters
BiobaseTypes library: Collection of types for bioinformatics
BiobaseVienna library: Import Vienna energy parameters
BiobaseXNA library and program: Efficient RNA/DNA representations
biocore library: A bioinformatics library
biofasta library: Library for reading fasta sequence files
biofastq library: A library for reading FASTQ files
biohazard library and programs: bioinformatics support library
biophd library: Library for reading phd sequence files
biopsl library and programs: Library and executables for working with PSL files
biosff library and programs: Library and executables for working with SFF files
biostockholm library: Parsing and rendering of Stockholm files (used by Pfam, Rfam and Infernal).
BlastHTTP library: Libary to interface with the NCBI blast REST interface
blastxml library: Library for reading Blast XML output
ClustalParser library and program: Libary for parsing Clustal tools output
clustertools programs: Tools for manipulating sequence clusters
CMCompare library and program: Infernal covariance model comparison
dephd programs: Analyze quality of nucleotide sequences.
diversity library and program: Quantify the diversity of a population
DnaProteinAlignment library and program: Frameshift-aware alignment of protein sequences with DNA sequences
EntrezHTTP library: Libary to interface with the NCBI Entrez REST service.
estreps programs: Repeats from ESTs
flower programs: Analyze 454 flowgrams (.SFF files)
flowsim programs: Simulate 454 pyrosequencing
ForestStructures library: Tree- and forest structures
FormalGrammars library and programs: (Context-free) grammars in formal language theory
gact program: General Alignment Clustering Tool
Genbank library and program: Libary for processing the NCBI genbank format
GenussFold library and program: MCFGs for Genus-1 RNA Pseudoknots
GrammarProducts library and program: Grammar products and higher-dimensional grammars
hemokit library and programs: Haskell port of the Emokit EEG project
hPDB library: Protein Databank file format library
hPDB-examples programs: Examples for hPDB library
hTalos library: Parser, print and manipulate structures in PDB file format.
korfu program: The Korfu ORF Utility
MC-Fold-DP library and program: Folding algorithm based on nucleotide cyclic motifs.
memexml library: Library for reading Meme XML output
modify-fasta library and program: Modify fasta (and CLIP) files in several optional ways
Nussinov78 library and program: Nussinov78 using the ADPfusion library.
PDBtools library and program: A library for analysis of 3-D protein coordinates
phybin library and program: ...
rbr programs: Mask nucleotide (EST) sequences in Fasta format
RNAdesign library and program: Multi-target RNA sequence design
RNAdraw library and program: Draw RNA secondary structures
RNAFold library and programs: RNA secondary structure prediction
RNAFoldProgs programs: RNA secondary structure folding
RNAlien library and programs: Unsupervized construction of RNA family models
RNAwolf library and programs: RNA folding with non-canonical basepairs and base-triplets.
samtools library and program: Binding to the C samtools library
samtools-conduit library and program: Conduit interface to SAM/BAM format files through samtools
samtools-enumerator library: Enumerator interface to SamTools library
samtools-iteratee library and program: Iteratee interface to SamTools library
seqloc library: Handle sequence locations for bioinformatics
seqloc-datafiles library and programs: Read and write BED and GTF format genome annotations
sgrep program: Sgrep - grep Fasta files for sequences matching a regular expression
simseq program: Simulate sequencing with different models for priming and errors
Taxonomy library: Libary for parsing, processing and vizualization of taxonomy data
TaxonomyTools programs: Tool for parsing, processing, comparing and visualizing taxonomy data
trimpolya program: Search for, annotate and trim poly-A tail
varan programs: Process mpileup output to identify significant differences
ViennaRNA-bindings library: ViennaRNA v2 bindings
ViennaRNAParser library: Libary for parsing ViennaRNA package output
xml2x program: Convert BLAST output in XML format to CSV or HTML
xsact programs: Cluster EST sequences

Bit

hw-bits library and program: Conduits for tokenizing streams.

Bit Vectors

bit-array library: A bit array (aka bitset, bitmap, bit vector) API for numeric types
bit-vector library: Simple bit vectors for Haskell
bitvec library: Unboxed vectors of bits / dense IntSets
bitwise library: fast multi-dimensional unboxed bit packed Bool arrays
bv library and program: Bit-vector arithmetic library
sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.
z3 library and program: Bindings for the Z3 Theorem Prover

Bitcoin

bitcoin-rpc library: Library to communicate with the Satoshi Bitcoin daemon
bitx-bitcoin library: A Haskell library for working with the BitX bitcoin exchange.
haskoin library: Implementation of the Bitcoin protocol.
haskoin-core library: Implementation of the core Bitcoin protocol features.
haskoin-crypto library: Implementation of Bitcoin cryptographic primitives.
haskoin-node library: Implementation of a Bitoin node.
haskoin-protocol library: Implementation of the Bitcoin network protocol messages
haskoin-script library: Implementation of Bitcoin script parsing and evaluation
haskoin-util library: Utility functions for the Network.Haskoin project
haskoin-wallet library and program: Implementation of a Bitcoin SPV Wallet with BIP32 and multisig support.

Browser

GoogleSuggest library: Interface to Google Suggest API
hbro library and program: Minimal extensible web-browser
hbro-contrib library: Third-party extensions to hbro.
manatee-browser library and program: Browser extension for Manatee.
web-browser-in-haskell library: Web Browser In Haskell
webdriver library: a Haskell client for the Selenium WebDriver protocol
webdriver-snoy library: a Haskell client for the Selenium WebDriver protocol (deprecated)

BSD

bsd-sysctl library: Access to the BSD sysctl(3) interface

Bsparse

bsparse library: A simple unassuming parser for bytestring

Build

Grow library: A declarative make-like interpreter.
up-grade program: Software management tool

Build Tool

elm-make program: A build tool for Elm projects

ByteString

bytestring-tree-builder library: A very efficient ByteString builder implementation based on the binary tree
stringable library: A Stringable type class, in the spirit of Foldable and Traversable

ByteStrings

base58-bytestring library: Implementation of BASE58 transcoding for ByteStrings

Cache

fcache library: Cache a function (a -> b)

Caching

expiring-cache-map library: General purpose simple caching.

CAPTCHA

antigate library: Interface for antigate.com captcha recognition API

Cast

type-iso library: Typeclasses for injective relations and isomorphisms between types.

CGI

cgi-utils library: Simple modular utilities for CGI/FastCGI (sessions, etc.)

Charts

Histogram library
textPlot library: Plot functions in text.

Chemistry

radium library: Chemistry
radium-formula-parser library: Chemistry
science-constants library: Mathematical/physical/chemical constants
science-constants-dimensional library: Mathematical/physical/chemical constants

Classification

HasGP library: A Haskell library for inference using Gaussian processes
hslibsvm library: A FFI binding to libsvm.
HSvm library: Haskell Bindings for libsvm
liblinear-enumerator library: liblinear iteratee.

Clckwrks

clckwrks library: A secure, reliable content management system (CMS) and blogging platform
clckwrks-cli program: a command-line interface for adminstrating some aspects of clckwrks
clckwrks-dot-com programs: clckwrks.com
clckwrks-plugin-bugs library: bug tracking plugin for clckwrks
clckwrks-plugin-ircbot library: ircbot plugin for clckwrks
clckwrks-plugin-media library: media plugin for clckwrks
clckwrks-plugin-page library: support for CMS/Blogging in clckwrks
clckwrks-theme-bootstrap library: simple bootstrap based template for clckwrks
clckwrks-theme-clckwrks library: simple bootstrap based template for clckwrks
clckwrks-theme-geo-bootstrap library: geo bootstrap based template for clckwrks

Cli

cli library: Command Line Interface
hastily library and program: A program to download subtitle files.

CLI Tool

eddie program: Command line file filtering with haskell

Client

jobqueue library: A job queue library
redis-job-queue library: Simple priority job queue backed by Redis.
stomp-conduit library: Stompl Conduit Client
stomp-patterns library: Stompl MOM Stomp Patterns
stomp-queue library: Stompl Client Library

Cloud

amazonka library: Comprehensive Amazon Web Services SDK.
amazonka-apigateway library: Amazon API Gateway SDK.
amazonka-autoscaling library: Amazon Auto Scaling SDK.
amazonka-certificatemanager library: Amazon Certificate Manager SDK.
amazonka-cloudformation library: Amazon CloudFormation SDK.
amazonka-cloudfront library: Amazon CloudFront SDK.
amazonka-cloudhsm library: Amazon CloudHSM SDK.
amazonka-cloudsearch library: Amazon CloudSearch SDK.
amazonka-cloudsearch-domains library: Amazon CloudSearch Domain SDK.
amazonka-cloudtrail library: Amazon CloudTrail SDK.
amazonka-cloudwatch library: Amazon CloudWatch SDK.
amazonka-cloudwatch-events library: Amazon CloudWatch Events SDK.
amazonka-cloudwatch-logs library: Amazon CloudWatch Logs SDK.
amazonka-codecommit library: Amazon CodeCommit SDK.
amazonka-codedeploy library: Amazon CodeDeploy SDK.
amazonka-codepipeline library: Amazon CodePipeline SDK.
amazonka-cognito-identity library: Amazon Cognito Identity SDK.
amazonka-cognito-sync library: Amazon Cognito Sync SDK.
amazonka-config library: Amazon Config SDK.
amazonka-core library: Core data types and functionality for Amazonka libraries.
amazonka-datapipeline library: Amazon Data Pipeline SDK.
amazonka-devicefarm library: Amazon Device Farm SDK.
amazonka-directconnect library: Amazon Direct Connect SDK.
amazonka-dms library: Amazon Database Migration Service SDK.
amazonka-ds library: Amazon Directory Service SDK.
amazonka-dynamodb library: Amazon DynamoDB SDK.
amazonka-dynamodb-streams library: Amazon DynamoDB Streams SDK.
amazonka-ec2 library: Amazon Elastic Compute Cloud SDK.
amazonka-ecr library: Amazon EC2 Container Registry SDK.
amazonka-ecs library: Amazon EC2 Container Service SDK.
amazonka-efs library: Amazon Elastic File System SDK.
amazonka-elasticache library: Amazon ElastiCache SDK.
amazonka-elasticbeanstalk library: Amazon Elastic Beanstalk SDK.
amazonka-elasticsearch library: Amazon Elasticsearch Service SDK.
amazonka-elastictranscoder library: Amazon Elastic Transcoder SDK.
amazonka-elb library: Amazon Elastic Load Balancing SDK.
amazonka-emr library: Amazon Elastic MapReduce SDK.
amazonka-gamelift library: Amazon GameLift SDK.
amazonka-glacier library: Amazon Glacier SDK.
amazonka-iam library: Amazon Identity and Access Management SDK.
amazonka-importexport library: Amazon Import/Export SDK.
amazonka-inspector library: Amazon Inspector SDK.
amazonka-iot library: Amazon IoT SDK.
amazonka-iot-dataplane library: Amazon IoT Data Plane SDK.
amazonka-kinesis library: Amazon Kinesis SDK.
amazonka-kinesis-firehose library: Amazon Kinesis Firehose SDK.
amazonka-kms library: Amazon Key Management Service SDK.
amazonka-lambda library: Amazon Lambda SDK.
amazonka-marketplace-analytics library: Amazon Marketplace Commerce Analytics SDK.
amazonka-marketplace-metering library: Amazon Marketplace Metering SDK.
amazonka-ml library: Amazon Machine Learning SDK.
amazonka-opsworks library: Amazon OpsWorks SDK.
amazonka-rds library: Amazon Relational Database Service SDK.
amazonka-redshift library: Amazon Redshift SDK.
amazonka-route53 library: Amazon Route 53 SDK.
amazonka-route53-domains library: Amazon Route 53 Domains SDK.
amazonka-s3 library: Amazon Simple Storage Service SDK.
amazonka-sdb library: Amazon SimpleDB SDK.
amazonka-ses library: Amazon Simple Email Service SDK.
amazonka-sns library: Amazon Simple Notification Service SDK.
amazonka-sqs library: Amazon Simple Queue Service SDK.
amazonka-ssm library: Amazon Simple Systems Management Service SDK.
amazonka-storagegateway library: Amazon Storage Gateway SDK.
amazonka-sts library: Amazon Security Token Service SDK.
amazonka-support library: Amazon Support SDK.
amazonka-swf library: Amazon Simple Workflow Service SDK.
amazonka-test library: Common functionality for Amazonka library test-suites.
amazonka-waf library: Amazon WAF SDK.
amazonka-workspaces library: Amazon WorkSpaces SDK.
api-tools library and program: DSL for generating API boilerplate and docs
aws library and programs: Amazon Web Services (AWS) for Haskell
aws-cloudfront-signer library: For signing AWS CloudFront HTTP URL requests
aws-configuration-tools library: Configuration types, parsers & renderers for AWS services
aws-ec2 library and programs: AWS EC2/VPC, ELB and CloudWatch client library for Haskell
aws-elastic-transcoder library and program: Haskell suite for the Elastic Transcoder service
aws-general library: Bindings for Amazon Web Services (AWS) General Reference
aws-kinesis library: Bindings for Amazon Kinesis
aws-kinesis-client library and program: A producer & consumer client library for AWS Kinesis
aws-kinesis-reshard library and program: Reshard AWS Kinesis streams in response to Cloud Watch metrics
aws-lambda library: Haskell bindings for AWS Lambda
aws-performance-tests library and program: Performance Tests for the Haskell bindings for Amazon Web Services (AWS)
aws-sdk library: AWS SDK for Haskell
aws-sign4 library: Amazon Web Services (AWS) Signature v4 HTTP request signer
aws-sns library: Bindings for AWS SNS Version 2013-03-31
gogol library: Comprehensive Google Services SDK.
gogol-adexchange-buyer library: Google Ad Exchange Buyer SDK.
gogol-adexchange-seller library: Google Ad Exchange Seller SDK.
gogol-admin-datatransfer library: Google Admin Data Transfer SDK.
gogol-admin-directory library: Google Admin Directory SDK.
gogol-admin-emailmigration library: Google Email Migration API v2 SDK.
gogol-admin-reports library: Google Admin Reports SDK.
gogol-adsense library: Google AdSense Management SDK.
gogol-adsense-host library: Google AdSense Host SDK.
gogol-affiliates library: Google Affiliate Network SDK.
gogol-analytics library: Google Analytics SDK.
gogol-android-enterprise library: Google Play EMM SDK.
gogol-android-publisher library: Google Play Developer SDK.
gogol-appengine library: Google App Engine Admin SDK.
gogol-apps-activity library: Google Apps Activity SDK.
gogol-apps-calendar library: Google Calendar SDK.
gogol-apps-licensing library: Google Enterprise License Manager SDK.
gogol-apps-reseller library: Google Enterprise Apps Reseller SDK.
gogol-apps-tasks library: Google Tasks SDK.
gogol-appstate library: Google App State SDK.
gogol-autoscaler library: Google Compute Engine Autoscaler SDK.
gogol-bigquery library: Google BigQuery SDK.
gogol-billing library: Google Cloud Billing SDK.
gogol-blogger library: Google Blogger SDK.
gogol-books library: Google Books SDK.
gogol-civicinfo library: Google Civic Information SDK.
gogol-classroom library: Google Classroom SDK.
gogol-cloudtrace library: Google Cloud Trace SDK.
gogol-compute library: Google Compute Engine SDK.
gogol-container library: Google Container Engine SDK.
gogol-core library: Core data types and functionality for Gogol libraries.
gogol-customsearch library: Google CustomSearch SDK.
gogol-dataflow library: Google Dataflow SDK.
gogol-datastore library: Google Cloud Datastore SDK.
gogol-debugger library: Google Cloud Debugger SDK.
gogol-deploymentmanager library: Google Cloud Deployment Manager SDK.
gogol-dfareporting library: Google DCM/DFA Reporting And Trafficking SDK.
gogol-discovery library: Google APIs Discovery Service SDK.
gogol-dns library: Google Cloud DNS SDK.
gogol-doubleclick-bids library: Google DoubleClick Bid Manager SDK.
gogol-doubleclick-search library: Google DoubleClick Search SDK.
gogol-drive library: Google Drive SDK.
gogol-fitness library: Google Fitness SDK.
gogol-fonts library: Google Fonts Developer SDK.
gogol-freebasesearch library: Google Freebase Search SDK.
gogol-fusiontables library: Google Fusion Tables SDK.
gogol-games library: Google Play Game Services SDK.
gogol-games-configuration library: Google Play Game Services Publishing SDK.
gogol-games-management library: Google Play Game Services Management SDK.
gogol-genomics library: Google Genomics SDK.
gogol-gmail library: Google Gmail SDK.
gogol-groups-migration library: Google Groups Migration SDK.
gogol-groups-settings library: Google Groups Settings SDK.
gogol-identity-toolkit library: Google Identity Toolkit SDK.
gogol-latencytest library: Google Cloud Network Performance Monitoring SDK.
gogol-logging library: Google Cloud Logging SDK.
gogol-maps-coordinate library: Google Maps Coordinate SDK.
gogol-maps-engine library: Google Maps Engine SDK.
gogol-mirror library: Google Mirror SDK.
gogol-monitoring library: Google Cloud Monitoring SDK.
gogol-oauth2 library: Google OAuth2 SDK.
gogol-pagespeed library: Google PageSpeed Insights SDK.
gogol-partners library: Google Partners SDK.
gogol-play-moviespartner library: Google Play Movies Partner SDK.
gogol-plus library: Google + SDK.
gogol-plus-domains library: Google + Domains SDK.
gogol-prediction library: Google Prediction SDK.
gogol-proximitybeacon library: Google Proximity Beacon SDK.
gogol-pubsub library: Google Cloud Pub/Sub SDK.
gogol-qpxexpress library: Google QPX Express SDK.
gogol-replicapool library: Google Compute Engine Instance Group Manager SDK.
gogol-replicapool-updater library: Google Compute Engine Instance Group Updater SDK.
gogol-resourcemanager library: Google Cloud Resource Manager SDK.
gogol-resourceviews library: Google Compute Engine Instance Groups SDK.
gogol-shopping-content library: Google Content API for Shopping SDK.
gogol-siteverification library: Google Site Verification SDK.
gogol-spectrum library: Google Spectrum Database SDK.
gogol-sqladmin library: Google Cloud SQL Administration SDK.
gogol-storage library: Google Cloud Storage JSON SDK.
gogol-storage-transfer library: Google Storage Transfer SDK.
gogol-tagmanager library: Google Tag Manager SDK.
gogol-taskqueue library: Google TaskQueue SDK.
gogol-translate library: Google Translate SDK.
gogol-urlshortener library: Google URL Shortener SDK.
gogol-useraccounts library: Google Cloud User Accounts SDK.
gogol-webmaster-tools library: Google Webmaster Tools SDK.
gogol-youtube library: Google YouTube Data SDK.
gogol-youtube-analytics library: Google YouTube Analytics SDK.
gogol-youtube-reporting library: Google YouTube Reporting SDK.
linode library: Bindings to the Linode API
pubnub library and programs: PubNub Haskell SDK
push-notify library: A server-side library for sending push notifications.
push-notify-ccs library: ...
push-notify-general library: A general library for sending/receiving push notif. through dif. services.
stratosphere library and programs: EDSL for AWS CloudFormation
wolf library and programs: Amazon Simple Workflow Service Wrapper.

Cloud Haskell

distributed-process-lifted library: monad-control style typeclass and transformer instances for Process monad.
distributed-process-task library: Task Framework for The Cloud Haskell Application Platform
distributed-process-tests library: Tests and test support tools for distributed-process.
distributed-process-zookeeper library and program: A Zookeeper back-end for Cloud Haskell.

Clustering

gsc-weighting library: Generic implementation of Gerstein/Sonnhammer/Chothia weighting.
hieraclus library: Automated clustering of arbitrary elements in Haskell.
hierarchical-clustering library: Fast algorithms for single, average/UPGMA and complete linkage clustering.
hierarchical-clustering-diagrams library: Draw diagrams of dendrograms made by hierarchical-clustering.
hps-kmeans library: A nice implementation of the k-Means algorithm.
hsgsom library: An implementation of the GSOM clustering algorithm.
kmeans library: K-means clustering algorithm

Code Competitions

competition library: Helpers and runners for code competitions

Code Generation

bond library and program: Bond schema compiler and code generator
dataflow library and program: Generate Graphviz documents from a Haskell representation.
flexible-defaults library: Generate default function implementations for complex type classes.
harpy library: Runtime code generation for x86 machine code
haskell-generate library: Typesafe generation of haskell source code
hburg program: Haskell Bottom Up Rewrite Generator
llvm library: Bindings to the LLVM compiler toolkit.
llvm-base library: FFI bindings to the LLVM compiler toolkit.
llvm-base-util library: Utilities for bindings to the LLVM compiler toolkit.
llvm-extra library and programs: Utility functions for the llvm interface
llvm-ffi library and programs: FFI bindings to the LLVM compiler toolkit.
llvm-general library: General purpose LLVM bindings
llvm-general-pure library: Pure Haskell LLVM functionality (no FFI).
llvm-general-quote library: QuasiQuoting llvm code for llvm-general
llvm-ht library: Bindings to the LLVM compiler toolkit with some custom extensions.
llvm-pkg-config program: Generate Pkg-Config configuration file for LLVM
llvm-tf library and programs: Bindings to the LLVM compiler toolkit using type families.
passage library: Parallel code generation for hierarchical Bayesian modeling.
preprocessor-tools library: A framework for extending Haskell's syntax via quick-and-dirty preprocessors
sugarhaskell programs: Library-based syntactic extensibility for Haskell

Codec

AC-PPM library: Trivial package for writing PPM images.
activitystreams-aeson library: An interface to the ActivityStreams specification
automitive-cse library: Automotive CSE emulation
automotive-cse library: Automotive CSE emulation
base32-bytestring library: Fast base32 and base32hex codec for ByteStrings
base64-string library: Base64 implementation for String's.
base91 library and program: A Generic Base91 Encoder & Decoder
bgzf library: Blocked GZip
bindings-codec2 library and program: Very low-level FFI bindings for Codec2
bitmaps library: Bitmap library
bmp library: Read and write uncompressed BMP image files.
bytable library: data from/to ByteString
bzlib library: Compression and decompression in the bzip2 format
bzlib-conduit library: Streaming compression/decompression via conduits.
chunky library and program: Human-readable storage of text/binary objects.
cityhash library: Bindings to CityHash
Codec-Compression-LZF library: LZF compression bindings.
codec-mbox library: A library to read and write mailboxes in mbox format
compression library: Common compression algorithms.
crockford library: An implementation of Douglas Crockford's base32 encoding.
Crypto library and programs: Collects together existing Haskell cryptographic functions into a package
dataenc library and program: Data encoding library
deunicode program: Get rid of unicode (utf-8) symbols in Haskell sources
DSA library: Implementation of DSA, based on the description of FIPS 186-4
dvorak library: Dvorak encoding for Haskell.
embroidery library and program: support for embroidery formats in haskell
Encode library and programs: Encoding character data
encoding library: A library for various character encodings
epub-metadata library: Library for parsing epub document metadata
fec library: Forward error correction of ByteStrings
ffmpeg-light library and programs: Minimal bindings to the FFmpeg library.
file-collection library: Provide a uniform interface over file archives and directories
fountain library: A fountain codec.
friday-juicypixels library: Converts between the Friday and JuicyPixels image types
gnuidn library: Bindings for GNU IDN
gray-code library: Gray code encoder/decoder.
haskell-compression library and program
HCodecs library: A library to read, write and manipulate MIDI, WAVE, and SoundFont2 files.
hecc library: Elliptic Curve Cryptography for Haskell
hogg library and programs: Library and tools to manipulate the Ogg container format
hOpenPGP library: native Haskell implementation of OpenPGP (RFC4880)
hopenpgp-tools programs: hOpenPGP-based command-line tools
hopfli library: zlib compatible compression using Zopfli Compression Algorithm
htar program: Command-line tar archive utility.
iff library: Constructing and dissecting IFF files
iteratee-compress library: Enumeratees for compressing and decompressing streams
json-encoder library: A direct-to-bytes single-pass JSON encoder with a declarative DSL
JuicyPixels library: Picture loading/serialization (in png, jpeg, bitmap, gif, tga, tiff and radiance)
libarchive-conduit library: Read many archive formats with libarchive and conduit
libvorbis library: Haskell binding for libvorbis, for decoding Ogg Vorbis audio files
LibZip library: Bindings to libzip, a library for manipulating zip archives.
list-t-text library: A streaming text codec
logic-TPTP library: Import, export etc. for TPTP, a syntax for first-order logic
lz4 library: LZ4 compression for ByteStrings
lzma library: LZMA/XZ compression and decompression
lzma-clib library: liblzma C library and headers for use by LZMA bindings
lzma-conduit library: Conduit interface for lzma/xz compression.
lzma-enumerator library: Enumerator interface for lzma/xz compression.
lzma-streams library: IO-Streams interface for lzma/xz compression
mime library: Working with MIME types.
mime-string library: MIME implementation for String's.
mp3decoder program: MP3 decoder for teaching.
mucipher library: A library to produce simple ciphers for use with lambdabot.
nano-hmac library: Bindings to OpenSSL HMAC.
nano-md5 library: Efficient, ByteString bindings to OpenSSL.
netpbm library: Loading PBM, PGM, PPM image files
omnicodec programs: data encoding and decoding command line utilities
openpgp-asciiarmor library: OpenPGP (RFC4880) ASCII Armor codec
pipes-bgzf library: Blocked GZip
pipes-bzip library: Streaming compression/decompression via pipes.
pipes-illumina library: Illumina NGS data processing
ppm library: a tiny PPM image generator
pure-zlib library and program: A Haskell-only implementation of zlib / DEFLATE
qrcode library: QR Code library in pure Haskell
quicklz library: QuickLZ compression for ByteStrings
rlglue library and programs: A Haskell codec for RL-Glue.
rot13 library: Fast ROT13 cipher for Haskell.
RSA library: Implementation of RSA, using the padding schemes of PKCS#1 v2.1.
sexpr library and program: S-expression printer and parser
SHA library and programs: Implementations of the SHA suite of message digest functions
snappy library: Bindings to the Google Snappy library for fast compression/decompression
snappy-conduit library: Conduit bindings for Snappy (see snappy package)
snappy-framing library: Snappy Framing Format in Haskell
snappy-iteratee library: An enumeratee that uses Google's snappy compression library.
sndfile-enumerators library: Audio file reading/writing
snow-white library: encode any binary instance to white space
stb-image library: A wrapper around Sean Barrett's JPEG/PNG decoder
streaming-png library and program: Perfectly streaming PNG image decoding
tar library: Reading, writing and manipulating ".tar" archive files.
text-locale-encoding library: Encode and decode Text to/from ByteString using TextEncoding
threefish library: The Threefish block cipher and the Skein hash function for Haskell.
Twofish library: An implementation of the Twofish Symmetric-key cipher.
uconv library: String encoding conversion with ICU
utf8-light library: Unicode
utf8-string library: Support for reading and writing UTF8 Strings
wavefront library: Wavefront OBJ loader
xlsior library: Streaming Excel file generation and parsing
xlsx library and program: Simple and incomplete Excel file parser/writer
xlsx-tabular library: Xlsx table decode utility
xlsx-templater library and program: Simple and incomplete Excel file templater
yajl library: Bindings for YAJL, an event-based JSON implementation
zim-parser library: Read and parse ZIM files
zip library: Operations on zip archives
zip-archive library and program: Library for creating and modifying zip archives.
zip-conduit library: Working with zip archives via conduits.
zlib library: Compression and decompression in the gzip and zlib formats
zlib-bindings library: Low-level bindings to the zlib package.
zlib-enum program: Enumerator interface for zlib compression
zlib-lens library: Lenses for zlib

Codec Conduit

sandi library: Data encoding library

Codecs

Codec-Image-DevIL library: An FFI interface to the DevIL library
HSoundFile library: Audio file reading/writing
html-entities library: A codec library for HTML-escaped text and HTML-entities
pngload library: Pure Haskell loader for PNG images
pngload-fixed library: Pure Haskell loader for PNG images
postgresql-binary library: Encoders and decoders for the PostgreSQL's binary format

Combinators

data-aviary library: Combinator birds.
DeepArrow library: Arrows for "deep application"
flow library: Write more understandable Haskell.
functional-arrow library: Combinators that allow for a more functional/monadic style of Arrow programming
JSON-Combinator library: A combinator library on top of a generalised JSON type
JSON-Combinator-Examples library: Example uses of the JSON-Combinator library.
pattern-arrows library: Arrows for Pretty Printing
pointless-fun library: Some common point-free combinators.
predicates library: A couple of convenience functions for forming predicates.
prelude-extras library: Higher order versions of Prelude classes
reverse-apply library: Standard version of the reverse apply operator.
scc library and program: Streaming component combinators
sec library: Semantic Editor Combinators.
syb-extras library: Higher order versions of the Scrap Your Boilerplate classes

Command Line

Hish library and program
ReadArgs library and program: Simple command line argument parsing

Commerce

turni program: shifts scheduling tool

Common-Parts

handle-like library: HandleLike class

Comonads

category-extras library: A meta-package documenting various packages inspired by category theory
comonad library: Comonads
comonad-extras library: Exotic comonad transformers
comonad-transformers library: This package has been merged into comonad 4.0
comonads-fd library: This package has been merged into comonad 4.0
data-lens library: Used to be Haskell 98 Lenses
data-lens-fd library: Lenses
data-lens-ixset library: A Lens for IxSet
folds library: Beautiful Folding
kan-extensions library: Kan extensions, Kan lifts, various forms of the Yoneda lemma, and (co)density (co)monads
partial-lens library: Haskell 98 Partial Lenses
representable-tries library: Tries from representations of polynomial functors
rivers library: Rivers are like Streams, but different.
semigroupoids library: Semigroupoids: Category sans id
streams library: Various Haskell 2010 stream comonads

Compatibility

base-compat library: A compatibility layer for base
base-orphans library: Backwards-compatible orphan instances for base
deriving-compat library: Backports of GHC deriving extensions
mtl-compat library: Backported Control.Monad.Except module from mtl
transformers-compat library: ...
types-compat library: ghc-7.6/7.8 compatible GHC.TypeLits, Data.Typeable and Data.Proxy.

Compiler

ajhc library and programs: Haskell compiler that produce binary through C language
alpha program: A compiler for the Alpha language
annah library and program: Medium-level language that desugars to Morte
bond library and program: Bond schema compiler and code generator
cao program: CAO Compiler
circ library: A Compiler IR Compiler.
dataflow library and program: Generate Graphviz documents from a Haskell representation.
Elm library and programs: The Elm language module.
elm-bridge library: Derive Elm types from Haskell types
elm-build-lib library: Compile Elm code to JS within Haskell
elm-compiler library and programs: Values to help with elm-package, elm-make, and elm-lang.org.
elm-core-sources library: Source files for the Elm runtime and standard libraries
elm-reactor program: Interactive development tool for Elm programs
elm-server program: Server for developing Elm projects
feldspar-compiler library: Compiler for the Feldspar language
flite library and programs: f-lite compiler, interpreter and libraries
formal program: A statically typed, functional programming language
forml program: A statically typed, functional programming language
gf library and programs: Grammatical Framework
hackager program: Hackage testing tool
haskelm library and program: Elm to Haskell translation
haste-compiler library and programs: Haskell To ECMAScript compiler
hcc program: A toy C compiler.
helium library and programs: The Helium Compiler.
hgom program: An haskell port of the java version of gom
hs2bf program: Haskell to Brainfuck compiler
KiCS library and programs: A compiler from Curry to Haskell
lambda2js program: Untyped Lambda calculus to JavaScript compiler
lambdacube-compiler library and programs: LambdaCube 3D is a DSL to program GPUs
lhc programs: LHC Haskell Compiler
maxsharing program: Maximal sharing of terms in the lambda calculus with letrec
morte library and program: A bare-bones calculus of constructions
optimusprime program: A supercompiler for f-lite
pcf library: A one file compiler for PCF
record-preprocessor library and program: Compiler preprocessor introducing a syntactic extension for anonymous records
sjsp program: Simple JavaScript Profiler
statechart program: Compiles Rhapsody statecharts to C.
sunroof-compiler library: Monadic Javascript Compiler
sunroof-examples programs: Tests for Sunroof
supero program: A Supercompiler
tiger program: Tiger Compiler of Universiteit Utrecht

Compiler Plugin

const-math-ghc-plugin library: Compiler plugin for constant math elimination
cse-ghc-plugin library: Compiler plugin for common subexpression elimination
seqaid library and programs: Dynamic strictness control, including space leak repair
strict-ghc-plugin library: Compiler plugin for making Haskell strict
unroll-ghc-plugin library: Compiler plugin for loop unrolling

Compilers

gll library: GLL parser with simple combinator interface

Compilers/Interpreters

accelerate library: An embedded language for accelerated array processing
accelerate-cuda library: Accelerate backend for NVIDIA GPUs
accelerate-examples library and programs: Examples using the Accelerate library
accelerate-fft library: FFT using the Accelerate library
accelerate-io library: Read and write Accelerate arrays in various formats
alms program: a practical affine language
amrun program: Interpreter for AM
asic program: Action Script Instrumentation Compiler
asil library: Action Script Instrumentation Library
atuin program: Embedded Turtle language compiler in Haskell, with Epic output
baskell program: An interpreter for a small functional language
Befunge93 program: An interpreter for the Befunge-93 Programming Language
bound library: Making de Bruijn Succ Less
bound-gen library: Unwrap Scope's with globally fresh values
brainfuck library and program: Brainfuck interpreter
brainfuck-monad library: BrainFuck monad
cfipu program: cfipu processor for toy brainfuck-like language
cfopu program: cfopu processor
cnc-spec-compiler program: Compiler/Translator for CnC Specification Files.
compilation library: Haskell functionality for quickly assembling simple compilers.
core-haskell program: A subset of Haskell using in UCC for teaching purpose
CPBrainfuck program: A simple Brainfuck interpretter.
CPL program: An interpreter of Hagino's Categorical Programming Language (CPL).
ddc-base library: Disciplined Disciple Compiler common utilities.
ddc-build library: Disciplined Disciple Compiler build framework.
ddc-code library: Disciplined Disciple Compiler base libraries.
ddc-core library: Disciplined Disciple Compiler core language and type checker.
ddc-core-babel library: Disciplined Disciple Compiler PHP code generator.
ddc-core-eval library: Disciplined Disciple Compiler semantic evaluator for the core language.
ddc-core-flow library: Disciplined Disciple Compiler data flow compiler.
ddc-core-llvm library: Disciplined Disciple Compiler LLVM code generator.
ddc-core-salt library: Disciplined Disciple Compiler C code generator.
ddc-core-simpl library: Disciplined Disciple Compiler code transformations.
ddc-core-tetra library: Disciplined Disciple Compiler intermediate language.
ddc-driver library: Disciplined Disciple Compiler top-level driver.
ddc-interface library: Disciplined Disciple Compiler user interface support.
ddc-source-tetra library: Disciplined Disciple Compiler source language.
ddc-tools programs: Disciplined Disciple Compiler command line tools.
ddc-war program: Disciplined Disciple Compiler test driver and buildbot.
ddci-core program: Disciple Core language interactive interpreter.
dedukti library and programs: A type-checker for the λΠ-modulo calculus.
egison library and program: Programming language with non-linear pattern-matching against non-free data
egison-tutorial program: A tutorial program for the Egison programming language
epic library and program: Compiler for a simple functional language
fst library and program: Finite state transducers
funcons-tools library and program: A modular interpreter for executing funcons
Fungi program: Funge-98 interpreter written in Haskell
ghci-haskeline program: An implementation of ghci using the Haskeline line-input library.
ghclive library and program: Interactive Haskell interpreter in a browser.
glambda library and program: A simply typed lambda calculus interpreter, written with GADTs
graph-rewriting-lambdascope program: Lambdascope, an optimal evaluator of the lambda calculus, ...
graph-rewriting-ski programs: Two evalutors of the SKI combinator calculus as interactive graph rewrite systems
graph-rewriting-trs program: Evaluate first-order applicative term rewrite systems interactively using graph reduction
graph-rewriting-ww program: ...
HARM library and programs: A simple ARM emulator in haskell
Haschoo program: Minimalist R5RS Scheme interpreter
haskeem program: A small scheme interpreter
helisp program: An incomplete Elisp compiler
hiccup program: Relatively efficient Tcl interpreter with support for basic operations
hint library: Runtime Haskell interpreter (GHC API wrapper)
hint-server library: A server process that runs hint.
hjs library and program: JavaScript Parser
hLLVM library and program: A library for analyzing and transforming LLVM (3.5) assembly codes
hoe program: hoe: Haskell One-liner Evaluator
hoopl library: A library to support dataflow analysis and optimization
husk-scheme library and programs: R5RS Scheme interpreter, compiler, and library.
husk-scheme-libs library: Extra libraries for the husk Scheme platform.
hybrid program: A implementation of a type-checker for Lambda-H
idris library and programs: Functional Programming Language with Dependent Types
INblobs program: Editor and interpreter for Interaction Nets
lambda-ast library: Lambda Calculi Abstract Syntax Trees
lambdacube program: A simple lambda cube type checker.
LambdaShell program: Simple shell for evaluating lambda expressions
linear-accelerate library: Instances to use linear vector spaces on accelerate backends
llvm library: Bindings to the LLVM compiler toolkit.
llvm-base library: FFI bindings to the LLVM compiler toolkit.
llvm-base-util library: Utilities for bindings to the LLVM compiler toolkit.
llvm-extra library and programs: Utility functions for the llvm interface
llvm-ffi library and programs: FFI bindings to the LLVM compiler toolkit.
llvm-general library: General purpose LLVM bindings
llvm-general-pure library: Pure Haskell LLVM functionality (no FFI).
llvm-general-quote library: QuasiQuoting llvm code for llvm-general
llvm-ht library: Bindings to the LLVM compiler toolkit with some custom extensions.
llvm-tf library and programs: Bindings to the LLVM compiler toolkit using type families.
lvmlib library and program: The Lazy Virtual Machine (LVM).
lvmrun program: The Lazy Virtual Machine (LVM) Runtime System.
mappy library and program: A functional programming language focused around maps.
noodle library and programs: the noodle programming language
NXTDSL library and program: Generate NXC Code from DSL
omega program: A purely functional programming language and a proof system
peg program: a lazy non-deterministic concatenative programming language
pesca program: Proof Editor for Sequent Calculus
piet library and program: A Piet interpreter
risc386 program: Reduced instruction set i386 simulator
secdh library and program: SECDH Machine Simulator
shell-monad library: shell monad
simple-atom library: Atom (or symbol) datatype for fast comparision and sorting.
simple-pascal library and program: Simplified Pascal language to SSVM compiler
simple-stacked-vm library and program: Simple stacked virtual machine: assembler, disassembler, bytecode interpreter
soyuz library and program: DCPU-16 architecture utilities for Notch's 0x10c game.
staticanalysis library: Reusable static analysis interfaces and modules.
swf library: A library for creating Shockwave Flash (SWF) files
tempus program: Interpreter for the FRP language Tempus
textmatetags program: A simple Haskell program to provide tags for Haskell code completion in TextMate
TinyLaunchbury library: Simple implementation of call-by-need using Launchbury's semantics
transf library and program: Text transformer and interpreter.
TypeIlluminator program: TypeIlluminator is a prototype tool exploring debugging of type errors/
unbound library: Generic support for programming with names and binders
unification-fd library: Simple generic unification algorithms.
unlambda library and program: Unlambda interpreter
uu-cco library: Utilities for compiler construction: core functionality
uu-cco-examples programs: Utilities for compiler construction: example programs
uu-cco-hut-parsing library: Utilities for compiler construction: Feedback wrapper around parser in uulib
uu-cco-uu-parsinglib library: Utilities for compiler construction: Feedback wrapper around parser in uu-parsinglib
vintage-basic program: Interpreter for microcomputer-era BASIC
whitespace program: Whitespace, an esoteric programming language.
yabi program: Yet Another Brainfuck Interpreter
zot program: Zot language

Composition

higherorder library: Some higher order functions for Bool and []
hofix-mtl library: defining @mtl@-ready monads as * -> * fixed-points
invertible library: bidirectional arrows, bijective functions, and invariant functors
pointless-fun library: Some common point-free combinators.
reverse-apply library: Standard version of the reverse apply operator.
star-to-star library: the * -> * types, operators, and covariant instances.
star-to-star-contra library: contravariant instances for * -> * types and operators.
TypeCompose library: Type composition classes & instances

Compression

compressed library: Compressed containers and reducers
huffman library: Pure Haskell implementation of the Huffman encoding algorithm
lzma library: LZMA/XZ compression and decompression
lzma-conduit library: Conduit interface for lzma/xz compression.
lzma-enumerator library: Enumerator interface for lzma/xz compression.
lzma-streams library: IO-Streams interface for lzma/xz compression
machines-zlib library: Decompression support for machines
pipes-zlib library: Zlib and GZip compression and decompression for Pipes streams
snappy library: Bindings to the Google Snappy library for fast compression/decompression
zlib-enum program: Enumerator interface for zlib compression

Computer Algebra

cash library: the Computer Algebra SHell

Concurrency

accelerate library: An embedded language for accelerated array processing
accelerate-cuda library: Accelerate backend for NVIDIA GPUs
accelerate-examples library and programs: Examples using the Accelerate library
accelerate-fft library: FFT using the Accelerate library
accelerate-io library: Read and write Accelerate arrays in various formats
actor library: Actors with multi-headed receive clauses
alarmclock library and program: Wake up and perform an action at a certain time.
async library: Run IO operations asynchronously and wait for their results
async-dejafu library: Run MonadConc operations asynchronously and wait for their results.
async-extras library: Extra Utilities for the Async Library
async-manager library and program: A thread manager for async
atomic-primops-vector library: Atomic operations on Data.Vector types
AVar library: Mutable variables with Exception handling and concurrency support.
bits-atomic library and program: Atomic bit operations on memory locations for low-level synchronization
blocking-transactions library: Composable, blocking transactions.
bounded-tchan library: Bounded Transactional channels (queues)
BoundedChan library: Implementation of bounded channels.
caf library: A library of Concurrency Abstractions using Futures.
chan-split library: Concurrent Chans as read/write pairs. Also provides generic Chan pair class.
chp library: An implementation of concurrency ideas from Communicating Sequential Processes
chp-mtl library: MTL class instances for the CHP library
chp-plus library: A set of high-level concurrency utilities built on Communicating Haskell Processes
chp-spec library: A mirror implementation of chp that generates a specification of the program
chp-transformers library: Transformers instances for the CHP library
cio library: A monad for concurrent IO on a thread pool
clocked library: timer functionality to clock IO commands
cml library: Events and Channels as in Concurrent ML
collapse-util program: utility for collapsing adjacent writes
conceit library: Concurrent actions that may fail with a value.
concurrent-barrier library: Simple thread barriers
concurrent-extra library: Extra concurrency primitives
concurrent-machines library: Concurrent networked stream transducers
concurrent-rpc library: An abstraction for inter-thread RPC based on MVars
concurrent-sa library: Concurrent simulated annealing system.
concurrent-supply library: A fast concurrent unique identifier supply with a pure API
concurrent-utilities library: More utilities and broad-used datastructures for concurrency.
ConcurrentUtils library: Concurrent utilities
conlogger library and program: A logger for a concurrent program.
consumers library: Concurrent PostgreSQL data consumers
coroutine-enumerator library: Bridge between the monad-coroutine and enumerator packages.
coroutine-iteratee library: Bridge between the monad-coroutine and iteratee packages.
CSPM-CoreLanguage library: Definition of a FDR-compatible CSP core-language.
CSPM-cspm library and program: cspm command line tool for analyzing CSPM specifications.
CSPM-FiringRules library: Firing rules semantic of CSPM
CSPM-Frontend library: A CSP-M parser compatible with FDR-2.91
CSPM-Interpreter library: An interpreter for CSPM
cspmchecker programs: A command line type checker for CSPM files.
ctrie library: Non-blocking concurrent map
data-concurrent-queue library: A Library for directional queues
data-ivar library: Write-once variables with concurrency support
data-timeout library: 64-bit timeouts of nanosecond precision
dejafu library: Overloadable primitives for testable, potentially non-deterministic, concurrency.
delay library: More useful and humain delaying functions
epass library: Baisc, Erlang-like message passing supporting sockets.
eprocess library: Basic Erlang-like process support for Haskell
event library: Monoidal, monadic and first-class events
expiring-mvar library: Create values which expire after a period of time.
free-concurrent library: Free monads suitable for concurrent computation
future library: Supposed to mimics and enhance proposed C++ "future" features
global-lock library: A global lock implemented without unsafePerformIO
Graph500 library and program: Graph500 benchmark-related definitions and data set generator.
GraphHammer library: GraphHammer Haskell graph analyses framework inspired by STINGER.
GraphHammer-examples library and programs: Test harness for TriangleCount analysis.
hactor library: Lightweight Erlang-style actors for Haskell.
hactors library: Practical actors for Haskell.
haxl library and program: A Haskell library for efficient, concurrent, and concise data access.
haxl-facebook library: An example Haxl data source for accessing the Facebook Graph API
hint-server library: A server process that runs hint.
HLogger library and program: Simple, concurrent and easy-to-use logging library
hlogger library: Simple, concurrent, extendable and easy-to-use logging library
hydra-print library and programs: NCurses interface to view multiple ByteString streams in parallel.
immortal library: Spawn threads that never die (unless told to do so)
inc-ref library: A STM reference useful for incremental computing
io-throttle library: Limit number of IO actions started per second
iothread library: run IOs in a single thread
ivar-simple library: Write once concurrency primitives.
join library: Parallel Join Patterns with Guards and Propagation
kazura-queue library: Fast concurrent queues much inspired by unagi-chan
keera-callbacks library: Mutable memory locations with callbacks
kickchan library: Kick Channels: bounded channels with non-blocking writes
libcspm library: A library providing a parser, type checker and evaluator for CSPM.
lifted-async library: Run lifted IO operations asynchronously and wait for their results
lifted-threads library: lifted IO operations from the threads library
linear-accelerate library: Instances to use linear vector spaces on accelerate backends
lub library: information operators: least upper bound (lub) and greatest lower bound (glb)
lvish library: Parallel scheduler, LVar data structures, and infrastructure to build more.
midair library: Hot-swappable FRP
monad-coroutine library: Coroutine monad transformer for suspending and resuming monadic computations
monadIO library: Overloading of concurrency variables
mstate library: MState: A consistent State monad for concurrent applications.
multisetrewrite library: Multi-set rewrite rules with guards and a parallel execution scheme
mvc library: Model-view-controller
mvc-updates library: Concurrent and combinable updates
named-lock library: A named lock that is created on demand.
nano-erl library: Small library for Erlang-style actor semantics
parallel-io library and programs: Combinators for executing IO actions in parallel on a thread pool.
parallel-tree-search library: Parallel Tree Search
persistent-map library: A thread-safe (STM) persistency interface for finite map types.
pipes-cliff library and programs: Streaming to and from subprocesses using Pipes
pipes-concurrency library: Concurrency for the pipes ecosystem
post-mess-age library: Send messages to a handle concurrently without getting them mixed.
priority-sync library and program: Cooperative task prioritization.
PriorityChansConverger library: Read single output from an array of inputs - channels with priorities
privileged-concurrency library: Provides privilege separated versions of the concurrency primitives.
promise library: A monadic interface for async
reactor library: Reactor - task parallel reactive programming
restricted-workers library: Running worker processes under system resource restrictions
rwlock library: Multiple-read / single-write locks
SafeSemaphore library: Much safer replacement for QSemN, QSem, and SampleVar
scc library and program: Streaming component combinators
semaphore-plus library: Various concurrency abstractions built on top of semaphores
sharedio library: Bundles shared calls to IO functions to perform them only once
simple-actors library: A library for more structured concurrent programming, based on the Actor Model
sirkel library: Sirkel, a Chord DHT
slave-thread library: A principal solution to ghost threads and silent exceptions
spawn library: Tiny library for concurrent computations
speculation library: A framework for safe, programmable, speculative parallelism
split-channel library: Control.Concurrent.Chan split into sending and receiving halves.
split-tchan library: STM's TChan split into sending and receiving halves.
Stasis library and program: A simple MVCC like library
stm library: Software Transactional Memory
stm-channelize library: Transactional I/O for duplex streams
stm-chans library: Additional types of channels for STM.
stm-chunked-queues library: Chunked Communication Queues
stm-conduit library: Introduces conduits to channels, and promotes using conduits concurrently.
stm-containers library: Containers for STM
stm-io-hooks library: STM with IO hooks
stm-lifted library: Software Transactional Memory lifted to MonadIO
stm-orelse-io library: Choose between the return value of an STM operation and an IO action.
stm-promise library: Simple STM Promises for IO computations and external processes
stm-queue-extras library: Extra queue utilities for STM
stm-stats library: retry statistics for STM transactions
stmcontrol library: Control communication among retrying transactions
suspend library: Simple package that allows for long thread suspensions.
sync library: A fast implementation of synchronous channels with a CML-like API
synchronous-channels library: Synchronous communication channels
tag-bits library: Provides access to the dynamic pointer tagging bits used by GHC.
tbox library: Transactional variables and data structures with IO hooks
thespian library: Lightweight Erlang-style actors for Haskell
threadmanager library: (deprecated in favor of 'threads') Simple thread management
ThreadObjects library: Mutable objects that reside in their own threads.
threads library: Fork threads and wait for their result
threads-supervisor library and program: Simple, IO-based library for Erlang-style thread supervision
timeout library: Generalized sleep and timeout functions
timeout-control library: Updatable timeouts as a Monad transformer
timeout-with-results library: Runs a time-limited computation alowing it to return intermediate results.
timers library: Simple package that implements timers.
timers-updatable library: timers which are updatable in the remaining time
token-bucket library: Rate limiter using lazy bucket algorithm
tskiplist library: A Skip List Implementation in Software Transactional Memory (STM)
ttrie library: Contention-free STM hash map
twilight-stm library: STM library with safe irrevocable I/O and inconsistency repair
unagi-chan library: Fast concurrent queues with a Chan-like API, and more
unagi-streams library: Unagi Chan IO-Streams
unamb library and program: Unambiguous choice
unamb-custom library: Functional concurrency with unamb using a custom scheduler.
unbounded-delays library: Unbounded thread delays and timeouts
unique library: Fully concurrent unique identifiers
unsafe-promises library: Create pure futures using lazy IO.
wait-handle library: Wait handles are MVars which can only be written to once, ...
waitfree library: A wrapping library for waitfree computation.

Concurrent

chaselev-deque library: Chase & Lev work-stealing lock-free double-ended queues (deques).
concurrent-split library: MVars and Channels with distinguished input and output side
forkable-monad library: An implementation of forkIO for monad stacks.
lockfree-queue library: Michael and Scott lock-free queues.
net-concurrent library: Concurrent over the network execution library
promises library: Lazy demand-driven promises
sirkel library: Sirkel, a Chord DHT
slave-thread library: A principal solution to ghost threads and silent exceptions
spawn library: Tiny library for concurrent computations
stm-split library: TMVars, TVars and TChans with distinguished input and output side

Conduit

ascii85-conduit library: Conduit for encoding ByteString into Ascii85
atom-conduit library: Streaming parser/renderer for the Atom 1.0 standard (RFC 4287).
attoparsec-conduit library: Consume attoparsec parsers via conduit. (deprecated)
base64-conduit library: Base64-encode and decode streams of bytes. (deprecated)
binary-conduit library: data serialization/deserialization conduit library
bits-conduit library: Bitstream support for Conduit
blaze-builder-conduit library: Convert streams of builders to streams of bytestrings. (deprecated)
cereal-conduit library: Turn Data.Serialize Gets and Puts into Sources, Sinks, and Conduits
conduit library: Streaming data processing library.
conduit-combinators library: Commonly used conduit functions, for both chunked and unchunked data
conduit-connection library: Conduit source and sink for Network.Connection.
conduit-extra library: Batteries included conduit: adapters for common libraries.
conduit-iconv library: Conduit for character encoding conversion.
conduit-parse library: Parsing framework based on conduit.
conduit-resumablesink library: Allows conduit to resume sinks to feed multiple sources into it.
conduit-tokenize-attoparsec library and program: Conduits for tokenizing streams.
couchdb-conduit library: Couch DB client library using http-conduit and aeson
crypto-conduit library: Conduit interface for cryptographic operations (from crypto-api).
cryptohash-conduit library: cryptohash conduit
cryptonite-conduit library: cryptonite conduit
csv-conduit library and program: A flexible, fast, conduit-based CSV parser library for Haskell.
decoder-conduit library: Conduit for decoding ByteStrings using Data.Binary.Get
filesystem-conduit library: Use system-filepath data types with conduits. (deprecated)
fluent-logger-conduit library: Conduit interface for fluent-logger
fold-debounce-conduit library: Regulate input traffic from conduit Source with Control.FoldDebounce
ftp-conduit library: FTP client package with conduit interface based off http-conduit
html-conduit library: Parse HTML documents using xml-conduit datatypes.
http-conduit library: HTTP client package with conduit interface and HTTPS support.
http-conduit-browser library: Browser interface to the http-conduit package
hw-conduit library and program: Conduits for tokenizing streams.
hw-diagnostics library and program: Conduits for tokenizing streams.
hw-json library and program: Conduits for tokenizing streams.
hw-rankselect library and program: Conduits for tokenizing streams.
hw-succinct library: Conduits for tokenizing streams.
imagesize-conduit library: Determine the size of some common image formats.
jsonrpc-conduit library: JSON-RPC 2.0 server over a Conduit.
lzma-conduit library: Conduit interface for lzma/xz compression.
network-conduit library: Stream socket data using conduits. (deprecated)
opml-conduit library: Streaming parser/renderer for the OPML 2.0 format.
pool-conduit library: Resource pool allocations via ResourceT. (deprecated)
process-conduit library: Conduits for processes (deprecated)
resourcet library: Deterministic allocation and freeing of scarce resources.
rss-conduit library: Streaming parser/renderer for the RSS 2.0 standard.
shell-conduit library: Write shell scripts with Conduit
simple-conduit library: A simple streaming I/O library based on monadic folds
stm-conduit library: Introduces conduits to channels, and promotes using conduits concurrently.
stomp-conduit library: Stompl Conduit Client
tagstream-conduit library: streamlined html tag parser
twitter-conduit library: Twitter API package with conduit interface and Streaming API support.
wai-conduit library: conduit wrappers for WAI
xinput-conduit library: Conduit of keys pressed by xinput
xml-conduit library: Pure-Haskell utilities for dealing with XML with the conduit package.
xml-conduit-parse library: Streaming XML parser based on conduits.
zip-conduit library: Working with zip archives via conduits.
zlib-conduit library: Streaming compression/decompression via conduits. (deprecated)

Configuration

app-settings library: A library to manage application settings (INI file-like)
aws-configuration-tools library: Configuration types, parsers & renderers for AWS services
bini library: A collection of various methods for reading and writing bini files.
conf library: Parser for Haskell-based configuration files.
config-manager library: Configuration management
Configger library: Parse config files
configifier library and program: parser for config files, shell variables, command line args.
configuration-tools library: Tools for specifying and parsing configurations
configurator library: Configuration management
configurator-export library: Pretty printer and exporter for configurations from the "configurator" library.
descrilo library: Loads a list of items with fields
dotenv library and program: Loads environment variables from dotenv files
dyre library: Dynamic reconfiguration in Haskell
global-config library: Global mutable configuration
htoml library and program: Parser for TOML files
ini library: Quick and easy configuration files in the INI format.
load-env library: Load environment variables from a file.
minimal-configuration library: Minimal ini like configuration library with a few extras
SConfig library: A simple config library
tce-conf library: Very simple config file reading
typeparams library: ...
yaml-config library: Configuration management

Console

argparser library: Command line parsing framework for console applications
buffer-pipe program: Read from stdin and write to stdout in large blocks
cltw program: Command line Twitter utility
cmdargs library and program: Command line argument processing
cmdargs-browser program: Helper to enter cmdargs command lines using a web browser
cmdtheline library: Declarative command-line option parsing and documentation library.
configuration-tools library: Tools for specifying and parsing configurations
console-program library: Interpret the command line and settings in a config file as commands and options
csv-to-qif program: A small program that will read csv files and create qif files
dapi program: Prints a series of dates
docopt library: A command-line interface parser that will make you smile
epub-tools programs: Command line utilities for working with epub files
epubname program: Rename epub ebook files based on meta information
equal-files program: Shell command for finding equal files
follower program: Follow Tweets anonymously
garepinoh library and programs: reverse prefix notation calculator and calculation library
getopt-generics library: Create command line interfaces with ease
ginsu program: Ginsu Gale Client
givegif library and program: CLI Giphy search tool with previews in iTerm 2
hascal library and program: A minimalistic but extensible and precise calculator
haskdeep program: Computes and audits file hashes.
haskell-awk library and program: Transform text from the command-line using Haskell expressions.
hello program: Hello World, an example package
hflags library: Command line flag parser, very similar to Google's gflags
Hish library and program
historian program: Extract the interesting bits from shell history
hledger library and program: Command-line interface for the hledger accounting tool
hledger-diff program: Compares the transactions in two ledger files.
hledger-ui program: Curses-style user interface for the hledger accounting tool
hranker program: Basic utility for ranking a list of items
hscrtmpl program: Haskell shell script template
hscurses-fish-ex program: hscurses swimming fish example
hskeleton library: Skeleton for new Haskell programs
hspresent library and program: A terminal presentation tool
hsprocess library and program: The Haskell Stream Processor command line utility
hunch program: CSS-like syntax for file system manipulation.
hunp program: Unpacker tool with DWIM
hunt-server-cli program: A Command line Interface for the Hunt server.
husky program: A simple command line calculator.
internetmarke program: Shell command for constructing custom stamps for German Post
ip6addr program: Commandline tool to generate IPv6 address text representations
matchers library: Text matchers
mdo program: Command-line tool to run a command on each of the items.
misfortune library and programs: fortune-mod clone
multiarg library and programs: Command lines for options that take multiple arguments
no-buffering-workaround library: Workaround for GHC bug #2189.
only program: A grep-like tool for filtering on words or lines.
opn program: Open files or URLs using associated programs.
options library: A powerful and easy-to-use command-line option parser.
options-time library: Command-line option types for dates and times.
parse-help library: generate command line arguments from a --help output
parseargs library and program: Full-featured command-line argument parsing library.
pasty program: A simple command line pasting utility
pb program: pastebin command line application
penny library and programs: Extensible double-entry accounting system
penny-bin programs: Deprecated - use penny package instead
penny-lib programs: Deprecated - use penny package instead
photoname program: Rename photo image files based on EXIF shoot date
pwstore-cli program: Command line interface for the pwstore library
readline library: An interface to the GNU readline library
runghc program: runghc replacement for fast repeated runs
spelling-suggest library and programs: Spelling suggestion tool with library and command-line interfaces.
termplot program: Plot time series in your terminal using commands stdout
themplate program: Project templating tool
thimk programs: Command-line spelling word suggestion tool
timecalc program
tkhs program: Simple Presentation Utility
toilet program: Manage the toilet queue at the IMO
txt-sushi library and programs: The SQL link in your *NIX chain
ztail program: Multi-file, colored, filtered log tailer.

Constraints

cluss library: simple alternative to type classes
constraints library: Constraint manipulation
csp library: Discrete constraint satisfaction problem (CSP) solver.
exists library: Existential datatypes holding evidence of constraints
ifscs library: An inductive-form set constraint solver
nondeterminism library: A monad and monad transformer for nondeterministic computations.
pseudo-boolean library: Reading/Writing OPB/WBO files used in pseudo boolean competition
Top library and program: Constraint solving framework employed by the Helium Compiler.
toysolver library and programs: Assorted decision procedures for SAT, Max-SAT, PB, MIP, etc
trivial-constraint library: Constraints that any type, resp. no type fulfills

Containers

focus library: A general abstraction for manipulating elements of container data structures
keys library: Keyed functors and containers
total-maps library: Dense and sparse total maps.

Contract

assert-failure library: Syntactic sugar improving 'assert' and 'error'

Control

AAI library: Abstract Application Interface.
AbortT-monadstf library: Monads-tf instances for the AbortT monad transformer.
AbortT-mtl library: mtl instances for the AbortT monad transformer
AbortT-transformers library: A monad and monadic transformer providing "abort" functionality
abstract-par library: Type classes generalizing the functionality of the 'monad-par' library.
action-permutations library: Execute a set of actions (e.g. parsers) in each possible order
Adaptive-Blaisorblade library and program: Library for incremental computing.
allocated-processor library: Functional combinators for monadic actions that require allocation and de-allocation
annihilator library: Semigroups with annihilators and utility functions
applicative-extras library: Instances for Applicative
applicative-fail library: Applicative functor and monad which collects all your fails
applicative-splice library: Write applicative programs in direct style (generalizes idiom brackets).
arrow-improve library: Improved arrows.
arrow-list library: List arrows for Haskell.
arrowapply-utils library: Utilities for working with ArrowApply instances more naturally
arrows library: Arrow classes and transformers
artery library: A simple, arrow-based reactive programming
assert library: Helpers for Control.Exception.assert
assert-failure library: Syntactic sugar improving 'assert' and 'error'
asynchronous-exceptions library: Distinguish between synchronous and asynchronous exceptions
atl library: Arrow Transformer Library
attoparsec-trans library: Interleaved effects for attoparsec parsers
auto library: Denotative, locally stateful programming DSL & platform
auto-update library: Efficiently run periodic, on-demand actions
backtracking-exceptions library: A monad transformer for backtracking exceptions
backward-state library: A state monad that runs the state in reverse through the computation
barrier-monad library: Implementation of barrier monad, can use custom front/back type
basic-prelude library: An enhanced core prelude; a common foundation for alternate preludes.
billeksah-main program: Leksah plugin base
billeksah-main-static program: Leksah plugin base
billeksah-services library: Leksah library
break library: Break from a loop
bytestring-progress library: A library for tracking the consumption of a lazy ByteString
bytestring-rematch library: Rematch support for ByteString
Cascade library: Playing with reified categorical composition
Catana library: A monad for complex manipulation of a stream.
catch-fd library: MonadThrow and MonadCatch, using functional dependencies
categories library: Categories
category-extras library: A meta-package documenting various packages inspired by category theory
CC-delcont library: Delimited continuations and dynamically scoped variables
CC-delcont-alt library: Three new monad transformers for multi-prompt delimited control
CC-delcont-cxe library: A monad transformers for multi-prompt delimited control
CC-delcont-exc library: A monad transformers for multi-prompt delimited control
CC-delcont-ref library: A monad transformers for multi-prompt delimited control using refercence cells
CC-delcont-ref-tf library: A monad transformers for multi-prompt delimited control using refercence cells
cflp library: Constraint Functional-Logic Programming in Haskell
ChannelT library: Generalized stream processors
classy-parallel library: Fork of the monad-parallel package using monad-control
classy-prelude library: A typeclass-based Prelude.
classy-prelude-conduit library: conduit instances for classy-prelude
classy-prelude-yesod library: Provide a classy prelude including common Yesod functionality.
ClassyPrelude library: Prelude replacement using classes instead of concrete types where reasonable
Clean library: A light, clean and powerful utility library
cloud-haskell library: The Cloud Haskell Application Platform
codecov-haskell library and programs: Codecov.io support for Haskell.
comonad library: Comonads
comonad-extras library: Exotic comonad transformers
comonad-random library: Comonadic interface for random values
comonad-transformers library: This package has been merged into comonad 4.0
comonads-fd library: This package has been merged into comonad 4.0
ComonadSheet library: A library for expressing spreadsheet-like computations as the fixed-points of comonads.
computations library: Advanced notions of computation
concatenative library: A library for postfix control flow.
concurrent-machines library: Concurrent networked stream transducers
concurrent-state library and program: MTL-like library using TVars
Concurrential library: Mix concurrent and sequential computation
cond library: Basic conditional and boolean operators with monadic variants.
Configurable library: Declare types as Configurable then specialize them all in one place
constrained-categories library: Constrained clones of the category-theory type classes, using ConstraintKinds.
constrained-normal library: Normalised Deep Embeddings for Constrained Type-Class Instances
ConstraintKinds library: Repackages standard type classes with the ConstraintKinds extension
ContArrow library: Control.Arrow.Transformer.Cont
continue library: Monads with suspension and arbitrary-spot reentry
contravariant library: Contravariant functors
contravariant-extras library: Extras for the "contravariant" package
control-bool library: Useful combinators for boolean expressions
Control-Engine library: A parallel producer/consumer engine (thread pool)
control-event library: Event scheduling system.
control-monad-exception library: Explicitly typed, checked exceptions with stack traces
control-monad-exception-monadsfd library: Monads-fd instances for the EMT exceptions monad transformer
control-monad-exception-monadstf library: Monads-tf instances for the EMT exceptions monad transformer
control-monad-exception-mtl library: MTL instances for the EMT exceptions monad transformer
control-monad-failure library: A class for monads which can fail with an error. (deprecated)
control-monad-failure-mtl library: A class for monads which can fail with an error for mtl 1 (deprecated)
control-monad-free library: Free monads and monad transformers
control-monad-loop library: Simple monad transformer for imperative-style loops
Control-Monad-MultiPass library: A Library for Writing Multi-Pass Algorithms.
control-monad-omega library: A breadth-first list monad.
control-monad-queue library: Reusable corecursive queues, via continuations.
Control-Monad-ST2 library: A variation on the ST monad with two type parameters.
control-timeout library: Timeout handling
contstuff library: Fast, easy to use CPS-based monad transformers
contstuff-monads-tf library: ContStuff instances for monads-tf transformers (deprecated)
contstuff-transformers library: Deprecated interface between contstuff 0.7.0 and the transformers package
conversion library: Universal converter between values of different types
conversion-bytestring library: "Conversion" instances for the "bytestring" library
conversion-case-insensitive library: "Conversion" instances for the "case-insensitive" library
conversion-text library: "Conversion" instances for the "text" library
Coroutine library: Type-safe coroutines using lightweight session types.
coroutine-object library: Object-oriented programming realization using coroutine
coverage library: Exhaustivity Checking Library
cr program: Code review tool
csp library: Discrete constraint satisfaction problem (CSP) solver.
custom-prelude library: An enhanced prelude, serving as a foundation for my projects
daemons library and programs: Daemons in Haskell made fun and easy
data-fresh library: Interface and functor transformers for fresh values
data-lens library: Used to be Haskell 98 Lenses
data-lens-fd library: Lenses
data-lens-ixset library: A Lens for IxSet
decepticons library: The categorical dual of transformers.
DeepArrow library: Arrows for "deep application"
deepcontrol library: ...
deepseq library: Deep evaluation of data structures
deepseq-bounded library: Bounded deepseq, including support for generic deriving
deepseq-generics library: GHC.Generics-based Control.DeepSeq.rnf implementation
deepseq-magic library: Deep evaluation of data structures without NFData
deepseq-th library: Template Haskell based deriver for optimised NFData instances
demarcate library: Demarcating transformed monad.
despair library: Despair
distributed-closure library: Serializable closures for distributed programming.
distributed-process library: Cloud Haskell: Erlang-style concurrency in Haskell
distributed-process-async library: Cloud Haskell Async API
distributed-process-azure library and programs: Microsoft Azure backend for Cloud Haskell
distributed-process-client-server library: The Cloud Haskell Application Platform
distributed-process-execution library: Execution Framework for The Cloud Haskell Application Platform
distributed-process-extras library: Cloud Haskell Extras
distributed-process-lifted library: monad-control style typeclass and transformer instances for Process monad.
distributed-process-monad-control library: Orphan instances for MonadBase and MonadBaseControl.
distributed-process-platform library and program: The Cloud Haskell Application Platform
distributed-process-registry library: Cloud Haskell Extended Process Registry
distributed-process-simplelocalnet library and program: Simple zero-configuration backend for Cloud Haskell
distributed-process-supervisor library: Supervisors for The Cloud Haskell Application Platform
distributed-process-task library: Task Framework for The Cloud Haskell Application Platform
distributed-process-tests library: Tests and test support tools for distributed-process.
distributed-process-zookeeper library and program: A Zookeeper back-end for Cloud Haskell.
distributed-static library: Compositional, type-safe, polymorphic static values and closures
edenmodules library: Semi-explicit parallel programming library
effect-handlers library: ...
effect-monad library: Embeds effect systems into Haskell using parameteric effect monads
effects library: Computational Effects
effects-parser library: Parser Effect for the Control.Effects Library
effin library: A Typeable-free implementation of extensible effects
either library: An either monad transformer
EitherT library: EitherT monad transformer
elevator library: Immediately lifts to a desired level
elision library and program: Arrows with holes.
enclosed-exceptions library: Catching all exceptions from within an enclosed computation
error-continuations library: Error Continuations
error-list library: A useful type for collecting error messages.
errorcall-eq-instance library: An orphan Eq instance for ErrorCall
errors library: Simplified error-handling
Etage library: A general data-flow framework
eternal library: everything breaking the Fairbairn threshold
ether library: Monad transformers and classes
event-driven library: library for event driven programming
event-handlers library: Event handlers
event-monad library: Event-graph simulation monad transformer
exception-monads-fd library: Exception monad transformer instances for monads-fd classes.
exception-monads-tf library: Exception monad transformer instances for monads-tf classes.
exception-mtl library: Exception monad transformer instances for mtl classes.
exception-transformers library: Type classes and monads for unchecked extensible exceptions.
exceptional library: Essentially the Maybe type with error messages.
exceptions library: Extensible optionally-pure exceptions
exhaustive library: ...
explicit-exception library and programs: Exceptions which are explicit in the type signature.
explicit-sharing library: Explicit Sharing of Monadic Effects
extensible-effects library: An Alternative to Monad Transformers
extensible-exceptions library: Extensible exceptions
failure library: A simple type class for success/failure computations. (deprecated)
FailureT library: Failure Monad Transformer
feature-flags library: A simple library for dynamically enabling and disabling functionality.
fold-debounce library: Fold multiple events that happen in a given period of time.
foldl library: Composable, streaming, and efficient left folds
foldl-incremental library: incremental folds
foldl-transduce library: Transducers for foldl folds.
foldl-transduce-attoparsec library: Attoparsec and foldl-transduce integration.
for-free library: Functor, Monad, MonadPlus, etc for free
forbidden-fruit library: A library accelerates imperative style programming.
ForkableT library: Forkable monad transformers
free library: Monads for free
free-operational library: Operational Applicative, Alternative, Monad and MonadPlus from free types.
free-vl library and program: van Laarhoven encoded Free Monad with Extensible Effects
freer library and program: Implementation of the Freer Monad
frpnow library: Principled practical FRP
frpnow-gloss library: Program awesome stuff with Gloss and frpnow!
frpnow-gtk library: Program GUIs with GTK and frpnow!
fsharp library: some F# operators, high priority pipes
full-sessions library: a monad for protocol-typed network programming
function-combine library: Combining functions
functor-apply library: This package has been subsumed by semigroupoids
functors library: (.:) and friends, syntax for Functor and Applicative.
future-resource library: realtime resource handling with manual concurrency
gang-of-threads library: Non-deterministic parallelism with bags
general-prelude library: Prelude replacement using generalized type classes where possible
generator library: Python-generators notation for creation of monadic lists
generators library: Actually useful monadic random value generators.
generic-deepseq library: Generic deep evaluation of data structures
gooey library: Graphical user interfaces that are renderable, ...
GotoT-transformers library: A monad and monadic transformer providing "goto" functionality
groupoids library: This package has been absorbed into semigroupoids 4.0
hasim library: Process-Based Discrete Event Simulation library
hask library: Categories
haskell-cnc library and program: Library for parallel programming in the Intel Concurrent Collections paradigm.
hcron library: A simple job scheduler, which just runs some IO action at a given time.
hdph library and programs: Haskell distributed parallel Haskell
hdph-closure library: Explicit closures in Haskell distributed parallel Haskell
hmk library and program: A make alternative based on Plan9's mk.
hoist-error library: Some convenience facilities for hoisting errors into a monad
hpc library: Code Coverage Library for Haskell
hpc-coveralls library and programs: Coveralls.io support for Haskell.
hreader library: Generalization of MonadReader and ReaderT using hset
hspec-monad-control library: Orphan instances of MonadBase and MonadBaseControl for SpecM
hyperfunctions library: Hyperfunctions
ifcxt library: put if statements within type constraints
IfElse library: Anaphoric and miscellaneous useful control-flow
ImperativeHaskell library: A library for writing Imperative style haskell.
implicit-logging library: A logging framework built around implicit parameters.
index-core library: Indexed Types
indexed library: Haskell98 indexed functors, monads, comonads
indexed-extras library: Indexed functors, monads and comonads that require extensions to Haskell98
indexed-free library: indexed monads for free
InfixApplicative library: liftA2 for infix operators.
inject-function library: Monadic functions with injected parameters.
interchangeable library: A type class for interchangeable data.
interleave library: Combinators for supporting interleaving of different behaviours
interruptible library: Monad transformers that can be run and resumed later, conserving their context.
interspersed library: An abstraction over interspersing monadic actions
invariant library: Haskell 98 invariant functors
invertible library: bidirectional arrows, bijective functions, and invariant functors
io-choice library: Choice for IO and lifted IO
io-reactive library and program: An API for generating TIMBER style reactive objects.
io-region library: Exception safe resource management with dynamic regions
iotransaction library: Supports the automatic undoing of IO operations when an exception is thrown.
ixmonad library: Embeds effect systems into Haskell using parameteric effect monads
JuicyPixels-util library: Convert JuicyPixel images into RGBA format, flip, trim and so on
Kleislify library: Variants of Control.Arrow functions, specialised to kleislis.
Kriens library: Category for Continuation Passing Style
lambda-devs library and program: a Paralell-DEVS implementaion based on distributed-process
lax library: Lax arrows
layers library: Modular type class machinery for monad transformer stacks.
lazyio library and program: Run IO actions lazily while respecting their order
lens-tutorial library: Tutorial for the lens library
lensref library: References which can be joined and on which lenses can be applied
level-monad library: Non-Determinism Monad for Level-Wise Search
lifted-base library: lifted IO operations from the base library
List library: List monad transformer and class
list-t library: ListT done right
local-search library: Generalised local search within Haskell, for applications in combinatorial optimisation.
log-effect library: An extensible log effect using extensible-effects
LogicGrowsOnTrees library and programs: a parallel implementation of logic programming using distributed tree exploration
LogicGrowsOnTrees-MPI library and programs: an adapter for LogicGrowsOnTrees that uses MPI
LogicGrowsOnTrees-network library and programs: an adapter for LogicGrowsOnTrees that uses multiple processes running in a network
LogicGrowsOnTrees-processes library and programs: an adapter for LogicGrowsOnTrees that uses multiple processes for parallelism
logicst library: Backtracking mutable references in the ST and IO monads
logict library: A backtracking logic-programming monad.
loop library: Fast loops (for when GHC can't optimize forM_)
loop-effin library: control-monad-loop port for effin
loop-while library: A monad transformer supporting various styles of while loop
loops library: Fast imperative-style loops
machinecell library: Arrow based stream transducers
machines library: Networked stream transducers
managed library: A monad for managed values
MaybeT library: MaybeT monad transformer
MaybeT-monads-tf library: MaybeT monad transformer compatible with monads-tf (deprecated)
MaybeT-transformers library: MaybeT monad transformer using transformers instead of mtl.
memo-ptr library: Pointer equality memoization
memoization-utils library: Utilities for memoizing functions
meta-par library: Provides the monad-par interface, but based on modular scheduler "mix-ins".
MHask library: The category of monads
midair library: Hot-swappable FRP
minioperational library: fast and simple operational monad
MissingM library: findM and other missing 'M's
mix-arrows library: Mixing effects of one arrow into another one
mmorph library: Monad morphisms
mmtl library: Modular Monad transformer library
mmtl-base library: MonadBase type-class for mmtl
modular-prelude library: A new Prelude featuring first class modules
modular-prelude-classy library: Reifying ClassyPrelude a la ModularPrelude
monad-abort-fd library: A better error monad transformer
monad-atom library: Monadically convert object to unique integers and back.
monad-atom-simple library: Monadically map objects to unique ints.
monad-bool library: This package has been removed.
monad-classes library: more flexible mtl
monad-codec library: Monadic conversion between complex data structures and unique integers
monad-connect library: Transformer for TCP connection with TLS and SOCKS support
monad-control library: Lift control operations, like exception catching, through monad transformers
monad-coroutine library: Coroutine monad transformer for suspending and resuming monadic computations
monad-exception library: Exstensible monadic exceptions
monad-extras library: Extra utility functions for working with monads
monad-fork library: Type class for monads which support a fork operation.
monad-hash library: Monad transformer for incremental hashing
monad-journal library: Pure logger typeclass and monad transformer
monad-levels library: Specific levels of monad transformers
monad-loops library: Monadic loops
monad-loops-stm library: Monadic loops for STM
monad-memo library: Memoization monad transformer
monad-mersenne-random library: An efficient random generator monad, based on the Mersenne Twister
monad-open library: Open recursion for when you need it
monad-ox library: Monad for observation extraction
monad-par library: A library for parallel programming based on a monad
monad-par-extras library: Combinators and extra features for Par monads
monad-parallel library: Parallel execution of monadic computations
monad-parallel-progressbar library: Parallel execution of monadic computations with a progress bar
monad-param library: Parameterized monads
monad-peel library: Lift control operations like exception catching through monad transformers
monad-products library: Monad products
monad-ran library: Fast monads and monad transformers
monad-resumption library: Resumption and reactive resumption monads for Haskell.
monad-skeleton library: An undead monad
monad-st library: Provides a MonadST class
monad-state library: Utility library for monads, particularly those involving state.
monad-ste library: ST monad with efficient explicit errors
monad-stm library: MonadSTM class analogous to MonadIO
monad-supply library: Stateful supply monad.
monad-task library: A monad transformer that turns event processing into co-routine programming.
monad-time library: Type class for monads which carry the notion of the current time.
monad-tx library: A transactional state monad.
monad-unlift library: Typeclasses for representing monad transformer unlifting
monad-unlift-ref library: Typeclasses for representing monad transformer unlifting
monad-wrap library: Wrap functions such as catch around different monads
monadbi library: Extract underlying monads from monad transformers
MonadCatchIO-mtl library: Monad-transformer version of the Control.Exception module
MonadCatchIO-mtl-foreign library: Polymorphic combinators for working with foreign functions
MonadCatchIO-transformers library: Monad-transformer compatible version of the Control.Exception module
MonadCatchIO-transformers-foreign library: Polymorphic combinators for working with foreign functions
monadcryptorandom library: A monad for using CryptoRandomGen
monadfibre library: Monadic functions which provide Choice and Parallelism.
monadiccp library: Constraint Programming
monadiccp-gecode library: Constraint Programming
monadio-unwrappable library: Reversibly allow monad transformer stacks to run in IO
monadLib-compose library: Arrow-like monad composition for monadLib.
monadlist library: Monadic versions of list functions
monadloc library: A class for monads which can keep a monadic call trace
monadloc-pp program: A preprocessor for generating monadic call traces
monadplus library: Haskell98 partial maps and filters over MonadPlus.
MonadPrompt library: MonadPrompt, implementation & examples
MonadRandom library: Random-number generation monad.
MonadRandomLazy library: Lazy monad for psuedo random-number generation.
monads-fd library: Monad classes, using functional dependencies
monads-tf library: Monad classes, using type families
MonadStack library: Generalizing lift to monad stacks
Monatron library: Monad transformer library with uniform liftings
Monatron-IO library: MonadIO instances for the Monatron transformers.
mtl library: Monad classes, using functional dependencies
mtl-evil-instances library: Instances for the mtl classes for all monad transformers.
mtl-tf library: Monad transformer library using type families
mtl-unleashed library: MTL classes without the functional dependency
mtlx library: Monad transformer library with type indexes, providing 'free' copies.
multipass library: Folding data with multiple named passes
multistate library and program: like mtl's ReaderT / WriterT / StateT, but more than one contained value/type.
mvc library: Model-view-controller
mvc-updates library: Concurrent and combinable updates
mzv library: Implementation of the "Monads, Zippers and Views" (Schrijvers and Oliveira, ICFP'11)
natural-transformation library: A natural transformation package.
needle library: ASCII-fied arrow notation
newtype library: A typeclass and set of functions for working with newtypes.
newtype-deriving library: Instance derivers for newtype wrappers
newtype-generics library: A typeclass and set of functions for working with newtypes, with generics support.
newtype-th library: A template haskell deriver to create Control.Newtype instances.
newtyper library: Extra functions for the Control.Newtype typeclass
nondeterminism library: A monad and monad transformer for nondeterministic computations.
Object library: Object oriented programming for haskell using multiparameter typeclasses.
objective library: Composable objects
open-signals library: A mechanism similar to checked exceptions that integrates with MTL and transformer stacks
operational library and program: Implementation of difficult monads made easy with operational semantics.
operational-class library: MonadProgram typeclass for the operational package
parallel library: Parallel programming library
parallel-tree-search library: Parallel Tree Search
partial library: A nullary type class for partial functions
partial-isomorphisms library: Partial isomorphisms.
partial-lens library: Haskell 98 Partial Lenses
perm library: permutation Applicative and Monad with many mtl instances
PermuteEffects library: Permutations of effectful computations
phantom-state library: Phantom State Transformer. Like State Monad, but without values.
pipe-enumerator library: A bidirectional bridge between pipes and iteratees
pipes library: Compositional pipelines
pipes-async library: A higher-level interface to using concurrency with pipes
pipes-attoparsec-streaming library and program: Streaming parsing in the pipes-core framework with Attoparsec.
pipes-bytestring library: ByteString support for pipes
pipes-cellular library: Pipes-based combinators for cellular data processing
pipes-cellular-csv library: Efficient pipes-based cellular CSV codec
pipes-concurrency library: Concurrency for the pipes ecosystem
pipes-conduit library: Conduit adapters
pipes-core library: Compositional pipelines
pipes-errors library: Integration between pipes and errors
pipes-extra library and programs: Various basic utilities for Pipes.
pipes-extras library: Extra utilities for pipes
pipes-group library: Group streams into substreams
pipes-parse library: Parsing infrastructure for the pipes ecosystem
pipes-rt library and program: A few pipes to control the timing of yields
pipes-safe library: Safety for the pipes ecosystem
pipes-transduce library: Interfacing pipes with foldl folds.
pipes-vector library: Various proxies for streaming data into vectors
pipes-zeromq4 library and programs: Pipes integration for ZeroMQ messaging
ports library: The Haskell Ports Library
prelude-plus program: Prelude for rest of us
ProbabilityMonads library: Probability distribution monads.
product-profunctors library: product-profunctors
profunctor-extras library: This package has been absorbed into profunctors 4.0
profunctors library: Profunctors
prologue library: Better, more general Prelude exporting common utilities.
prompt library: Monad (and transformer) for deferred-effect pure prompt-response queries
quantum-arrow library: An embedding of quantum computation as a Haskell arrow
quiver library: Quiver finite stream processing library
quiver-binary library: Binary serialisation support for Quivers
quiver-bytestring library: Quiver combinators for bytestring streaming
quiver-cell library: Quiver combinators for cellular data processing
quiver-csv library: Quiver combinators for cellular CSV data processing
quiver-enumerator library: Bridge between Quiver and Iteratee paradigms
quiver-groups library: Group and chunk values within a Quiver
quiver-http library: Adapter to stream over HTTP(s) with quiver
quiver-instances library: Extra instances for Quiver
quiver-interleave library: Interleave values from multiple Quivers
quiver-sort library: Sort the values in a quiver
random-eff library: A simple random generator library for extensible-effects
random-effin library: A simple random generator library for effin
rate-limit library: A basic library for rate-limiting IO actions.
reactive-haskell library: minimal fork of io-reactive
reactive-io library: IO-oriented FRP library
reasonable-lens library: Lens implementation. It is more small but adequately.
reasonable-operational library: Just size Operational Monad implementation.
record library: Anonymous records
recursion-schemes library: Generalized bananas, lenses and barbed wire
ref-fd library: A type class for monads with references using functional dependencies.
ref-mtl library: A type class for monads with references compatible with the mtl2 library.
ref-tf library: A type class for monads with references using type families.
reference library: A class for references in Haskell
references library: Generalization of lenses, folds and traversals to handle monads and addition.
regions library: Provides the region monad for safely opening and working with scarce resources.
regions-monadsfd library: Monads-fd instances for the RegionT monad transformer
regions-monadstf library: Monads-tf instances for the RegionT monad transformer
regions-mtl library: mtl instances for the RegionT monad transformer
rematch library: A simple api for matchers
rematch-text library: `rematch` matchers for Data.Text
remote-monad library: An parametrizable Remote Monad, and parametrizable Applicative Functor
ReplicateEffects library: Composable replication schemes of applicative functors
representable-profunctors library: This package has been absorbed into profunctor-extras.
request-monad library: A transformer for generic requests
resource-effect library: A port of the package 'resourcet' for extensible effects.
resource-pool-monad library: A monadic interface for resource-pool
resource-simple library: Allocate resources which are guaranteed to be released.
resumable-exceptions library: A monad transformer for resumable exceptions
retry library: Retry combinators for monadic actions that may fail
rev-state library: Reverse State monad transformer
rex library: A quasi-quoter for typeful results of regex captures.
RichConditional library: Tiny library to replace classic if/else
rmonad library: Restricted monad library
RoyalMonad library: All hail the Royal Monad!
scc library and program: Streaming component combinators
schonfinkeling library: Transformation of n-ary functions to unary functions
SciFlow library: Scientific workflow management system
semi-iso library: Weakened partial isomorphisms, reversible computations.
semigroupoid-extras library: Semigroupoids that depend on PolyKinds
semigroupoids library: Semigroupoids: Category sans id
sessions library: Session Types for Haskell
shared-fields library: a tiny library for using shared lens fields
shortcircuit library: Short-circuit values and expressions.
simple-observer library: The Observer pattern
simple-sessions library: A simple implementation of session types
sink library: An alternative to lazy I/O that doesn't conflate execution with evaluation
skulk library: Eclectic collection of utility functions
sousit library: Source/Sink/Transform: An alternative to lazy IO and iteratees.
spawn library: Tiny library for concurrent computations
speculation-transformers library: Merged into 'speculation'. Use that instead.
stack-hpc-coveralls library and program: Initial project template from stack
state-plus library: MonadPlus for StateT
statestack library: Simple State-like monad transformer with saveable and restorable state
stateWriter library: A faster variant of the RWS monad transformers.
stopwatch library: A simple stopwatch utility
stream-monad library and program: Simple, Fair and Terminating Backtracking Monad
streamproc library: Stream Processer Arrow
streams library: Various Haskell 2010 stream comonads
strict-concurrency library: Strict concurrency abstractions
strict-identity library: Strict Identity Monad, handy for writing fast code!
strictly library: Combinators for strictifying functions
sub-state library: Get the total, put a single element
subhask library: Type safe interface for programming in subcategories of Hask
supervisor library: Control an internal monad execution for trace generation, backtrakcking, ...
synchronous-channels library: Synchronous communication channels
tagged-exception-core library: Reflect exceptions using phantom types.
tagshare library: TagShare - explicit sharing with tags
Tainted library: Tainted type, and associated operations
takahashi library: create slide for presentation.
tardis library: Bidirectional state monad transformer
THEff library: TH implementation of effects.
these library: An either-or-both data type & a generalized 'zip with padding' typeclass
threads-pool library: A library to operate with pool of haskell's IO threads
time-out library: Execute a computation with a timeout
timeout library: Generalized sleep and timeout functions
timeout-control library: Updatable timeouts as a Monad transformer
total library: Exhaustive pattern matching using lenses, traversals, and prisms
trace library: A monad transformer for tracing provenience of errors
transactional-events library: Transactional events, based on Concurrent ML semantics
transformers library: Concrete functor and monad transformers
transformers-abort library: A better error monad transformer
transformers-base library: Lift computations from the bottom of a transformer stack
transformers-compose library: Arrow-like / category-like composition for transformers.
transformers-convert library: Sensible conversions between some of the monad transformers
transformers-eff library: An approach to managing composable effects, ala mtl/transformers/extensible-effects/Eff
transformers-free library: Free monad transformers
transformers-lift library: Ad-hoc type classes for lifting
transformers-runnable library: A unified interface for the run operation of monad transformers
transient library: Making composable programs with multithreading, events and distributed computing
transient-universe library: remote execution and map-reduce: distributed computing for transient
tree-monad library: Non-Determinism Monad for Tree Search
TreeT library: Transformer for Data.Tree
trivia library: The trivial monad and comonad
tubes library: Write stream processing computations with side effects in a series of tubes.
tuple-lenses library: Stock FieldN combos and generators
tweak library: A library for incremental computing
type-operators library: Various type-level operators
TypeCompose library: Type composition classes & instances
uberlast library: Generate overloaded lenses from plain data declaration
unexceptionalio library: IO without any non-error, synchronous exceptions
unordered-containers-rematch library: Rematch support for unordered containers
unpack-funcs library: Monad transformers that mirror worker-wrapper transformations.
unsafe library: Unified interface to unsafe functions
unsequential library: An extension removing the sequentiality from monads
uu-interleaved library: ...
variables library: Monads with variables, without deep magic
varying library and program: FRP through value streams and monadic splines.
vector-strategies library: A parallel evaluation strategy for boxed vectors
views library: Views allow you to run a State monad on part of a state.
vinyl-utils library: Utilities for vinyl
watchdog library: Simple control structure to re-try an action with exponential backoff
weighted-search library: A weighted nondeterministic search monad
withdependencies library: Run computations that depend on one or more elements in a stream.
wl-pprint-extras library: A free monad based on the Wadler/Leijen pretty printer
wl-pprint-terminfo library: A color pretty printer with terminfo support
Workflow library: Workflow patterns over a monad for thread state logging & recovery
xml-html-conduit-lens library: Optics for xml-conduit and html-conduit
zoom-refs library: Zoom (~ Functor) and pairing (~ Applicative) for mutable references.

Control.Parallel.Eden

edenskel library: Semi-explicit parallel programming skeleton library

Convenience

schedule-planner program: Find the ideal lesson layout

Conversion

conversion library: Universal converter between values of different types
conversion-bytestring library: "Conversion" instances for the "bytestring" library
conversion-case-insensitive library: "Conversion" instances for the "case-insensitive" library
conversion-text library: "Conversion" instances for the "text" library

CouchDB

ez-couch library: A high level static library for working with CouchDB

Crosswords

hpuz library: Haskell bindings for libpuz

Crypto

cprng-aes-effect library: Run random effect using cprng-aes, a crypto pseudo number generator.
crypto-random-effect library: A random effect using crypto-random
ecdsa library: Basic ECDSA signing implementation
lol library: A library for lattice cryptography.
lol-apps library: Lattice-based cryptographic applications using Lol.
openssl-createkey library: Create OpenSSL keypairs.
pkcs7 library: PKCS #7 padding in Haskell
ripple library: Ripple payment system library
secp256k1 library: Bindings for secp256k1 library from Bitcoin Core
spritz library: An implementation of the Spritz RC4-like stream cipher in Haskell

Cryptography

adler32 library: An implementation of Adler-32, supporting rolling checksum operation
AES library: Fast AES encryption/decryption for bytestrings
afis library: Anti-forensic Information Splitter
apache-md5 library: Apache specific MD5 digest algorighm.
bcrypt library: Haskell bindings to the bcrypt password hash
blake2 library: A library providing BLAKE2
blakesum library: The BLAKE SHA-3 candidate hashes, in Haskell
blakesum-demo program: The BLAKE SHA-3 candidate hashes, in Haskell
cacophony library and programs: A library implementing the Noise protocol.
cao program: CAO Compiler
cipher-aes library: Fast AES cipher implementation with advanced mode of operations
cipher-aes128 library and program: AES and common modes using AES-NI when available.
cipher-blowfish library: Blowfish cipher
cipher-camellia library: Camellia block cipher primitives
cipher-des library: DES and 3DES primitives
cipher-rc4 library: Fast RC4 cipher implementation
cipher-rc5 library: Pure RC5 implementation
commsec library: Provide communications security using symmetric ephemeral keys
cprng-aes library: Crypto Pseudo Random Number Generator using AES in counter mode.
cpsa programs: Symbolic cryptographic protocol analyzer
crc16 library: Calculate the crc16-ccitt.
Crypto library and programs: Collects together existing Haskell cryptographic functions into a package
crypto-api library: A generic interface for cryptographic operations
crypto-api-tests library: A test framework and KATs for cryptographic operations.
crypto-cipher-benchmarks library: Generic cryptography cipher benchmarks
crypto-cipher-tests library: Generic cryptography cipher tests
crypto-cipher-types library: Generic cryptography cipher types
crypto-classical library: An educational tool for studying classical cryptography schemes.
crypto-conduit library: Conduit interface for cryptographic operations (from crypto-api).
crypto-enigma library: An Enigma machine simulator with display.
crypto-numbers library: Cryptographic numbers: functions and algorithms
crypto-pubkey library: Public Key cryptography
crypto-pubkey-openssh library: OpenSSH keys decoder/encoder
crypto-pubkey-types library: Generic cryptography Public keys algorithm types
crypto-random library: Simple cryptographic random related types
crypto-random-api library: Simple random generators API for cryptography related code
crypto-totp library: Provides generation and verification services for time-based one-time keys.
cryptocipher library: Symmetrical block and stream ciphers.
cryptohash library: collection of crypto hashes, fast, pure and practical
cryptohash-conduit library: cryptohash conduit
cryptohash-cryptoapi library: Crypto-api interfaces for cryptohash
cryptohash-sha256 library: Fast, pure and practical SHA-256 implementation
cryptonite library: Cryptography Primitives sink
cryptonite-conduit library: cryptonite conduit
cryptonite-openssl library: Crypto stuff using OpenSSL cryptographic library
data-dispersal library: Space-efficient and privacy-preserving data dispersal algorithms.
dice-entropy-conduit library: Cryptographically secure n-sided dice via rejection sampling.
digest library: Various cryptographic hashes for bytestrings; CRC32 and Adler32 for now.
digest-pure library: Pure hash functions for bytestrings
DRBG library: Deterministic random bit generator (aka RNG, PRNG) based HMACs, Hashes, and Ciphers.
DSA library: Implementation of DSA, based on the description of FIPS 186-4
Dust-crypto library: Cryptographic operations
ed25519 library: Ed25519 cryptographic signatures
ed25519-donna library: Haskell bindings to ed25519-donna (Elliptical Curve Signature Scheme)
elocrypt library and program: Generate easy-to-remember, hard-to-guess passwords
entropy library: A platform independent entropy source
h-gpgme library: High Level Binding for GnuPG Made Easy (gpgme)
haskdeep program: Computes and audits file hashes.
hecc library: Elliptic Curve Cryptography for Haskell
hF2 library: F(2^e) math for cryptography
hkdf library: Implementation of HKDF (RFC 5869)
hopenssl library: FFI bindings to OpenSSL's EVP digest interface
HsOpenSSL library: Partial OpenSSL binding for Haskell
intel-aes library: Hardware accelerated AES encryption and Random Number Generation.
jose library: Javascript Object Signing and Encryption and JSON Web Token library
jose-jwt library: JSON Object Signing and Encryption Library
jumpthefive library and program: an elementary symmetric chiffre for pragmatically protecting one's effects
keystore library and programs: Managing stores of secret things
Lazy-Pbkdf2 library: Lazy PBKDF2 generator.
monad-hash library: Monad transformer for incremental hashing
monadcryptorandom library: A monad for using CryptoRandomGen
nettle library: safe nettle binding
nonce library: Generate cryptographic nonces.
NTRU library: NTRU Cryptography
one-time-password library: HMAC-Based and Time-Based One-Time Passwords
openpgp-Crypto library: Implementation of cryptography for use with OpenPGP using the Crypto library
openpgp-crypto-api library: Implement cryptography for OpenPGP using crypto-api compatible libraries
OTP library: HMAC-Based and Time-Based One-Time Passwords
PasswordGenerator library: Simple library for generating passwords
passwords library: Password generation/validation library
pbkdf library: Haskell implementation of the PBKDF functions from RFC-2898.
PBKDF2 library: Make password-based security schemes more secure.
pipes-cacophony library: Pipes for Noise-secured network connections.
pkcs1 library: RSA encryption with PKCS1 padding
pureMD5 library: A Haskell-only implementation of the MD5 digest (hash) algorithm.
pwstore-cli program: Command line interface for the pwstore library
pwstore-fast library: Secure password storage.
pwstore-purehaskell library: Secure password storage, in pure Haskell.
RSA library: Implementation of RSA, using the padding schemes of PKCS#1 v2.1.
saltine library: Cryptography that's easy to digest (NaCl/libsodium bindings).
saltine-quickcheck library: Quickcheck implementations for some NaCl data
scrypt library: Stronger password hashing via sequential memory-hard functions.
secret-sharing library: Information-theoretic secure secret sharing
SHA library and programs: Implementations of the SHA suite of message digest functions
SHA2 library: Fast, incremental SHA hashing for bytestrings
SimpleAES library: Fast AES encryption/decryption for bytestrings
siphash library: siphash: a fast short input PRF
skein library: Skein, a family of cryptographic hash functions. Includes Skein-MAC as well.
threefish library: The Threefish block cipher and the Skein hash function for Haskell.
TigerHash library: TigerHash with C implementation
Twofish library: An implementation of the Twofish Symmetric-key cipher.
WMSigner library: WebMoney authentication module
wordpass library and program: Dictionary-based password generator
xsha1 library: cryptanalysis of Blizzard's broken SHA-1 implementation.
xxhash library: A Haskell implementation of the xxHash algorithm
zerobin library and programs: Post to 0bin services

CSV

cassava library: A CSV parsing and encoding library
cassava-streams library and program: io-streams interface for the cassava CSV library.
csv-conduit library and program: A flexible, fast, conduit-based CSV parser library for Haskell.
pipes-csv library: Fast, streaming csv parser
pipes-key-value-csv library: Streaming processing of CSV files preceded by key-value pairs.

Data

abcBridge library and programs: Bindings for ABC, A System for Sequential Synthesis and Verification
abeson library: interconversion between aeson and bson.
ABList library: An alternating list of two types
abstract-deque library: Abstract, parameterized interface to mutable Deques.
abstract-deque-tests library: A test-suite for any queue or double-ended queue satisfying an interface
AC-Angle library: Angles in degrees and radians.
AC-Boolean library: Handle Boolean values generatically.
AC-Colour library: Efficient RGB colour types.
AC-HalfInteger library: Efficient half-integer type.
ac-machine library: Aho-Corasick string matching algorithm in Haskell
ac-machine-conduit library: Drive Aho-Corasick machines in Conduit pipelines
AC-Terminal library: Trivial wrapper over ansi-terminal.
AC-VanillaArray library: Immutable arrays with plain integer indicies.
AC-Vector library: Efficient geometric vectors and transformations.
AC-Vector-Fancy library: Fancy type-system stuff for AC-Vector
accelerate library: An embedded language for accelerated array processing
accelerate-cuda library: Accelerate backend for NVIDIA GPUs
accelerate-examples library and programs: Examples using the Accelerate library
accelerate-fft library: FFT using the Accelerate library
accelerate-io library: Read and write Accelerate arrays in various formats
accelerate-random library: Generate Accelerate arrays filled with high quality pseudorandom numbers
active library: Abstractions for animation
adaptive-containers library: Self optimizing container types
adaptive-tuple library: Self-optimizing tuple types
AERN-Basics library and program: foundational type classes for approximating exact real numbers
AERN-Real library: arbitrary precision real interval arithmetic
AERN-Real-Double library and programs: arbitrary precision real interval arithmetic
AERN-Real-Interval library: arbitrary precision real interval arithmetic
AERN-RnToRm library: polynomial function enclosures (PFEs) approximating exact real functions
AERN-RnToRm-Plot library: GL plotting of polynomial function enclosures (PFEs)
aeson-applicative library: make To/From JSOn instances from an applicative description
aeson-bson library: Mapping between Aeson's JSON and Bson objects.
aeson-casing library: Tools to change the formatting of field names in Aeson instances.
aeson-iproute library: Aeson instances for iproute types
aeson-lens library: Lens of Aeson
aeson-schema library: Haskell JSON schema validator and parser generator
aeson-t library: Transform JSON
aeson-utils library: Utilities for working with Aeson.
aeson-value-parser library: An API for parsing "aeson" JSON tree into Haskell types
aeson-yak library: Handle JSON that may or may not be a list, or exist
AesonBson library: Mapping between Aeson's JSON and Bson objects.
afis library: Anti-forensic Information Splitter
aig library: And-inverter graphs in Haskell.
algebraic-classes library: Conversions between algebraic classes and F-algebras.
align library: Sequence alignment algorithms.
alpino-tools library and programs: Alpino data manipulation tools
altcomposition library: Alternative combinators for unorthodox function composition
alternative-io library: IO as Alternative instance (deprecated)
anonymous-sums library and program: Anonymous sum types
anonymous-sums-tests library: QuickCheck functions to accompany the anonymous-sums package
ANum library: Num instance for Applicatives provided via the ANum newtype
apache-md5 library: Apache specific MD5 digest algorighm.
app-lens library: applicative (functional) bidirectional programming beyond composition chains
appc library and program: app container types and tools
applicative-numbers library: Applicative-based numeric instances
approximate-equality library: Newtype wrappers for approximate equality
arff library: Generate Attribute-Relation File Format (ARFF) files
arith-encode library: A practical arithmetic encoding (aka Godel numbering) library.
array-primops library: Extra foreign primops for primitive arrays
array-utils library: Primitive functions for updating many elements in mutable arrays at once
ArrayRef library: Unboxed references, dynamic arrays and more
ascii library: Type-safe, bytestring-based ASCII values. (deprecated)
ascii-vector-avc library and program: Process Ascii Vectors for Advantest 93k
ascii85-conduit library: Conduit for encoding ByteString into Ascii85
asn1-data library and program: ASN1 data reader and writer in RAW, BER and DER forms
asn1-encoding library: ASN1 data reader and writer in RAW, BER and DER forms
asn1-parse library: Simple monadic parser for ASN1 stream types.
asn1-types library: ASN.1 types
astar library: General A* search algorithm.
aterm library: serialisation for Haskell values with sharing support
atlassian-connect-descriptor library: Code that helps you create a valid Atlassian Connect Descriptor.
atomic-primops library: A safe approach to CAS and other atomic ops in Haskell.
atomic-primops-foreign library: An atomic counter implemented using the FFI.
attempt library: Concrete data type for handling extensible exceptions as failures. (deprecated)
atto-lisp library: Efficient parsing and serialisation of S-Expressions.
AttoBencode library: Fast Bencode encoding and parsing library
attoparsec-arff library: An ARFF file parser using Attoparsec
attoparsec-binary library: Binary processing extensions to Attoparsec.
attoparsec-conduit library: Consume attoparsec parsers via conduit. (deprecated)
attoparsec-iteratee library: An adapter to convert attoparsec Parsers into blazing-fast Iteratees
attosplit library: Split a lazy bytestring at boundaries defined by an attoparsec parser
audiovisual library: A battery-included audiovisual framework
avl-static library: A compile-time balanced AVL tree.
b-tree library: Immutable disk-based B* trees
bank-holidays-england library: Calculation of bank holidays in England and Wales
base16-bytestring library: Fast base16 (hex) encoding and decoding for ByteStrings
base32-bytestring library: Fast base32 and base32hex codec for ByteStrings
base32string library: Fast and safe representation of a Base-32 string
base58-bytestring library: Implementation of BASE58 transcoding for ByteStrings
base58string library: Fast and safe representation of a Base-58 string
base64-bytestring library: Fast base64 encoding and decoding for ByteStrings
base64-conduit library: Base64-encode and decode streams of bytes. (deprecated)
bcrypt library: Haskell bindings to the bcrypt password hash
bdelta library: Simple, fast binary diff/patch
beamable library: Generic serializer/deserializer with compact representation
bencoding library: A library for encoding and decoding of BEncode data.
bert library: BERT implementation
between library: Function combinator "between" and derived combinators
bff library and programs: Bidirectionalization for Free! (POPL'09)
bff-mono library: "Bidirectionalization for Free" for Monomorphic Transformations
bidispec library: Specification of generators and parsers
bidispec-extras library: Extra helper functions for bidirectional specifications
bifunctors library: Bifunctors
bimap library: Bidirectional mapping between two key types
bimap-server library: Two-column database server.
bimaps library: bijections with multiple implementations.
binary library: Binary serialisation for Haskell values using lazy ByteStrings
binary-bits library: Bit parsing/writing on top of binary.
binary-communicator library: Flexible way to ease transmission of binary data.
binary-derive library: Automatic deriving of Binary using GHC.Generics
binary-enum library: Simple wrappers around enum types
binary-generic library: Generic binary serialisation using binary and syb.
binary-indexed-tree library: Binary Indexed Trees (a.k.a. Fenwick Trees).
binary-list library: Lists of length a power of two.
binary-protocol library: Monad to ease implementing a binary network protocol.
binary-protocol-zmq library and program: Monad to ease implementing a binary network protocol over ZeroMQ
binary-shared library: Sharing for the binary package
binary-state library: Simple wrapper around Data.Binary, which adds StateT to Get/Put monads.
binary-store library: Format to store data using the binary transform.
binary-streams library: data serialization/deserialization io-streams library
binary-strict library: Binary deserialisation using strict ByteStrings
binary-typed library: Type-safe binary serialization
binarydefer library: Binary serialization with deferred loading
bind-marshal library: Data marshaling library that uses type level equations to optimize buffering.
bindynamic library: A variation of Data.Dynamic.Dynamic with a Binary instance
bini library: A collection of various methods for reading and writing bini files.
bit-vector library: Simple bit vectors for Haskell
bitarray library: Mutable and immutable bit arrays
bitmap library: A library for handling and manipulating bitmaps (rectangular pixel arrays).
bitmap-opengl library: OpenGL support for Data.Bitmap.
bitmaps library: Bitmap library
bits library: Various bit twiddling and bitwise serialization primitives
bits-atomic library and program: Atomic bit operations on memory locations for low-level synchronization
bits-bytestring library: Bits instance for bytestrings.
bits-conduit library: Bitstream support for Conduit
bits-extras library and program: Efficient high-level bit operations not found in Data.Bits
bitstream library: Fast, packed, strict and lazy bit streams with stream fusion
bitstring library: Lazy bit strings
bitvec library: Unboxed vectors of bits / dense IntSets
bitwise library: fast multi-dimensional unboxed bit packed Bool arrays
blaze-builder library: Efficient buffered output.
blaze-builder-conduit library: Convert streams of builders to streams of bytestrings. (deprecated)
blaze-builder-enumerator library: Enumeratees for the incremental conversion of builders to bytestrings.
bloomfilter library: Pure and impure Bloom Filter implementations.
bloomfilter-redis library: Distributed bloom filters on Redis (using the Hedis client).
bond-haskell library: Runtime support for BOND serialization
bool-extras library: A fold function for Bool
Boolean library: Generalized booleans and numbers
boolean-list library: convert numbers to binary coded lists
boolean-normal-forms library: Boolean normal form: NNF, DNF & CNF
boombox library: Chronokinetic stream sources and incremental consumers
both library: Like Maybe, but with a different Monoid instance.
boundingboxes library: A generic boundingbox for an arbitrary vector
bson library: BSON documents are JSON-like objects with a standard binary encoding.
bson-generic library: Generic functionality for BSON
bson-generics library: Generics functionality for BSON
bson-mapping library: Mapping between BSON and algebraic data types.
bspack library: A simple and fast bytestring packer
buffer-builder library: Library for efficiently building up buffers, one piece at a time
buffer-builder-aeson library: Serialize Aeson values with Data.BufferBuilder
buildable library: Typeclass for builders of linear data structures
bv library and program: Bit-vector arithmetic library
byteable library: Type class for sequence of bytes
bytes library: Sharing code for serialization between binary and cereal
byteset library: Set of bytes.
bytestring library: Fast, compact, strict and lazy byte strings with a list interface
bytestring-arbitrary library: Arbitrary instances for ByteStrings
bytestring-builder library: The new bytestring builder, packaged outside of GHC
bytestring-class library: Classes for automatic conversion to and from strict and lazy bytestrings. (deprecated)
bytestring-conversion library: Type-classes to convert values to and from ByteString.
bytestring-csv library: Parse CSV formatted data efficiently
bytestring-delta library: Simple, fast binary diff/patch
bytestring-from library: A type-class to convert values from ByteString.
bytestring-lexing library: Parse and produce literals efficiently from strict or lazy bytestrings.
bytestring-plain library: Plain byte strings ('ForeignPtr'-less 'ByteString's)
bytestring-read library: fast ByteString to number converting library
bytestring-trie library: An efficient finite map from (byte)strings to values.
cached-traversable library: Transparent, persistent caching of lazy, traversable structures
capped-list library: A list-like type for lazy sequences, with a user-defined termination value.
Cardinality library: Measure container capacity. Use it to safely change container.
carray library: A C-compatible array library.
case-insensitive library: Case insensitive string comparison
cassava-conduit library: Conduit interface for cassava package
cassava-streams library and program: io-streams interface for the cassava CSV library.
categorical-algebra library: Categorical Monoids and Semirings
CBOR library: Encode/Decode values to/from CBOR
cereal library: A binary serialization library
cereal-derive library: Automatic deriving of Serialize using GHC.Generics
cereal-ieee754 library: Floating point support for the 'cereal' serialization library
cereal-text library: Data.Text instances for the cereal serialization library
cereal-vector library: Serialize instances for Data.Vector types.
certificate library and programs: Certificates and Key Reader/Writer
chain-codes library: Library decoding chain codes from images
charset library: Fast unicode character sets based on complemented PATRICIA tries
chaselev-deque library: Chase & Lev work-stealing lock-free double-ended queues (deques).
chatty-utils library: Some utilities every serious chatty-based application may need.
Checked library: Inbuilt checking for ultra reliable computing
checked library: Bounds-checking integer types.
chunked-data library: Typeclasses for dealing with various chunked data representations
ciphersaber2 library and program: Implementation of CipherSaber2 RC4 cryptography.
CLASE library: Cursor Library for A Structured Editor
classify library: Library for classification of media files.
ClassyPrelude library: Prelude replacement using classes instead of concrete types where reasonable
clean-unions library: Open unions without need for Typeable
CLI library: CLI tools
clist library: Counted list
cmph library: low level interface to CMPH
code-builder library: Simple system for generating code.
codec library: First-class record construction and bidirectional serialization
codec-libevent library and program: Cross-platform structure serialisation
cofunctor library: DEPRECATED: use the "contravariant" package
colors library: A type for colors
colour library: A model for human colour/color perception
combobuffer library: Various buffer implementations
comfort-graph library: Graph structure with type parameters for nodes and edges
commutative library: Commutative binary operations.
compact-map library: Compact Data.Map implementation using Data.Binary
compact-string library: Fast, packed and strict strings with Unicode support, based on bytestrings.
compact-string-fix library: Same as compact-string except with a small fix so it builds on ghc-6.12
compactmap library: A read-only memory-efficient key-value store.
compose-ltr library: More intuitive, left-to-right function composition.
composition library: Combinators for unorthodox function composition
composition-extra library: Combinators for unorthodox structure composition
composition-tree library: Composition trees for arbitrary monoids.
compressed library: Compressed containers and reducers
comptrans library: Automatically converting ASTs into compositional data types
concrete-typerep library: Binary and Hashable instances for TypeRep
condorcet library: Library for Condorcet voting
conduit library: Streaming data processing library.
conduit-combinators library: Commonly used conduit functions, for both chunked and unchunked data
conduit-extra library: Batteries included conduit: adapters for common libraries.
conduit-resumablesink library: Allows conduit to resume sinks to feed multiple sources into it.
conduit-tokenize-attoparsec library and program: Conduits for tokenizing streams.
config-manager library: Configuration management
configifier library and program: parser for config files, shell variables, command line args.
configuration library: Simple data type for application configuration.
configurator library: Configuration management
configurator-export library: Pretty printer and exporter for configurations from the "configurator" library.
congruence-relation library: Decidable congruence relations for Haskell: up to you whether this is a joke
connection-pool library: Connection pool built on top of resource-pool and streaming-commons.
ConsStream library: Trivial re-export of Wouter Swierstra's Stream package, avoiding module name clash.
containers-deepseq library: Provide orphan NFData instances for containers as needed. (deprecated)
context-stack library: An abstraction of a stack and stack-based monadic context.
contravariant library: Contravariant functors
control-monad-attempt library: Monad transformer for attempt. (deprecated)
conversion library: Universal converter between values of different types
conversion-bytestring library: "Conversion" instances for the "bytestring" library
conversion-case-insensitive library: "Conversion" instances for the "case-insensitive" library
conversion-text library: "Conversion" instances for the "text" library
convert library: Safe and unsafe data conversion utilities with strong type-level operation. checking.
convertible library and program: Typeclasses and instances for converting between types
convertible-ascii library: convertible instances for ascii
convertible-text program: Typeclasses and instances for converting between types (deprecated)
COrdering library: An algebraic data type similar to Prelude Ordering.
coroutine-iteratee library: Bridge between the monad-coroutine and iteratee packages.
count library: Bijective mappings between values and possibly infinite prefixes of [0..]
countable library: Countable, Searchable, Finite, Empty classes
counter library: An object frequency counter.
country-codes library and program: ISO 3166 country codes and i18n names.
cpio-conduit library: Conduit-based CPIO
cpu library and program: Cpu information and properties helpers.
cqrs library: Command-Query Responsibility Segregation
cqrs-core library: Command-Query Responsibility Segregation
cqrs-memory library: Memory backend for the cqrs package.
cqrs-postgresql library: PostgreSQL backend for the cqrs package.
cqrs-sqlite3 library: SQLite3 backend for the cqrs package.
cqrs-test library: Command-Query Responsibility Segregation Test Support
cqrs-testkit library: Command-Query Responsibility Segregation Test Support
cqrs-types library: Command-Query Responsibility Segregation. Modules for the basic types.
critbit library: Crit-bit maps and sets
crypto-api library: A generic interface for cryptographic operations
crypto-api-tests library: A test framework and KATs for cryptographic operations.
cryptohash library: collection of crypto hashes, fast, pure and practical
cryptohash-sha256 library: Fast, pure and practical SHA-256 implementation
css-syntax library: This package implments a parser for the CSS syntax
csv-conduit library and program: A flexible, fast, conduit-based CSV parser library for Haskell.
csv-enumerator library: A flexible, fast, enumerator-based CSV parser library for Haskell.
csv-table library: Scripts for manipulating tables stored as CSV files
CTRex library: Open records using closed type families.
cudd library: Bindings to the CUDD binary decision diagrams library
currency library: Types representing standard and non-standard currencies
data-accessor library: Utilities for accessing and manipulating fields of records
data-accessor-monadLib library: Accessor functions for monadLib's monads
data-accessor-monads-fd library: Use Accessor to access state in monads-fd State monad class
data-accessor-monads-tf library: Use Accessor to access state in monads-tf State monad type family
data-accessor-mtl library: Use Accessor to access state in mtl State monad class
data-accessor-template library: Utilities for accessing and manipulating fields of records
data-accessor-transformers library: Use Accessor to access state in transformers State monad
data-binary-ieee754 library: Parser/Serialiser for IEEE-754 floating-point values
data-bword library: Extra operations on binary words of fixed length
data-carousel library: A rotating sequence data structure
data-cell library: Generic cellular data representation library
data-checked library: Type-indexed runtime-checked properties
data-cycle library: a cyclic doubly linked list
data-default library: A class for types with a default value
data-default-class library: A class for types with a default value
data-default-extra library: A class for types with a default value.
data-default-generics library: A class for types with a default value
data-default-instances-base library: Default instances for types in base
data-default-instances-bytestring library: Default instances for (lazy and strict) ByteString, Builder and ShortByteString.
data-default-instances-case-insensitive library: Default instance for CI type from case-insensitive package.
data-default-instances-containers library: Default instances for types in containers
data-default-instances-dlist library: Default instances for types in dlist
data-default-instances-new-base library: Default instances for types in newer versions of base package.
data-default-instances-old-locale library: Default instances for types in old-locale
data-default-instances-text library: Default instances for (lazy and strict) Text and Text Builder.
data-default-instances-unordered-containers library: Default instances for unordered-containers.
data-default-instances-vector library: Default instances for types defined in vector package
data-dispersal library: Space-efficient and privacy-preserving data dispersal algorithms.
data-dword library: Stick two binary words together to get a bigger one
data-easy library: Consistent set of utility functions for Maybe, Either, List and Monoids.
data-embed library and program: Embed files and other binary blobs inside executables without Template Haskell.
data-endian library: Endian-sensitive data
data-extend-generic library: Extend Haskell data or newtype like in OOP languages
data-filepath library: A type safe file path data structure
data-fin library: Finite totally ordered sets
data-fin-simple library: Simple integral finite set
data-fix library: Fixpoint data types
data-fix-cse library: Common subexpression elimination for the fixploint types.
data-flags library: A package for working with bit masks and flags in general.
data-flagset library: An efficient data type for sets of flags
data-hash library: Combinators for building fast hashing functions.
Data-Hash-Consistent library: Provide a simple consistent hashing mechanism
data-interval library: Interval arithmetic for both open and closed intervals
data-inttrie library: A lazy, infinite trie of integers.
data-ivar library: Write-once variables with concurrency support
data-json-token library and program: Json Token datatype
data-kiln library: ...
data-layout library: Read/write arbitrary binary layouts to a "Data.Vector.Storable".
data-lens-light library: Simple lenses, minimum dependencies
data-lens-template library: Utilities for Data.Lens
data-list-sequences library: Utilities for working with sequences within lists.
data-map-multikey library: Data.Map with multiple, unique keys
data-memocombinators library: Combinators for building memo tables.
data-nat library: data Nat = Zero | Succ Nat
data-object library: Represent hierachichal structures, called objects in JSON. (deprecated)
data-or library: A data type for non-exclusive disjunction.
data-ordlist library: Set and bag operations on ordered lists
data-partition library: A pure disjoint set (union find) data structure
data-quotientref library: Reference cells that need two independent indices to be accessed.
data-ref library: Unify STRef and IORef in plain Haskell 98
data-reify library and programs: Reify a recursive data structure into an explicit graph.
data-reify-cse library: Common Sub-Expression Elimination for graphs generated by Data.Reify.
data-rev library: A typeclass for reversing order of contents.
Data-Rope library: Ropes, an alternative to (Byte)Strings.
data-rope library: Ropes, an alternative to (Byte)Strings.
data-spacepart library: Deprecated. Now called "spacepart". Space partitioning data structures.
data-store library: Type safe, in-memory dictionary with multidimensional keys.
data-tensor library: Tensor and Group typeclasses
data-textual library: Human-friendly textual representations.
data-timeout library: 64-bit timeouts of nanosecond precision
data-transform library: Functions to transform data structures.
data-treify library: Reify a recursive data structure into an explicit graph.
data-type library: Basic type wrangling types and classes
data-util library: utilities for handle data
data-variant library: A variant data type, useful for modeling dynamically-typed programming languages
dates library: Small library for parsing different dates formats.
datetime library: Utilities to make Data.Time.* easier to use
datetime-sb library: Utilities to make Data.Time.* easier to use.
dawg library: Directed acyclic word graphs
dawg-ord library: Directed acyclic word graphs
DCFL library: Communication Free Learning-based constraint solver
deiko-config library: Small and typesafe configuration library.
delimited-text library: Parse character delimited textual data
delta library and programs: A library for detecting file changes
dependent-map library: Dependent finite maps (partial dependent products)
dependent-state library: Control structure similar to Control.Monad.State, ...
dependent-sum library: Dependent sum type
derive-enumerable library: Generic instances for enumerating complex data types
derive-IG library: Macro to derive instances for Instant-Generics using Template Haskell
derive-trie library: Automatic derivation of Trie implementations.
descrilo library: Loads a list of items with fields
dgim library: Implementation of DGIM algorithm
dice-entropy-conduit library: Cryptographically secure n-sided dice via rejection sampling.
dicom library: ...
diff3 library: Perform a 3-way difference of documents
Digit library: A data-type representing digits 0-9
digit library: A data-type representing digits 0-9 and other combinations
digits library: Converts integers to lists of digits and back.
DimensionalHash library: An n-dimensional hash using Morton numbers.
direct-binary-files library: Serialization and deserialization monads for streams and ByteStrings.
direct-murmur-hash library: An implementation of the MurmurHash3 algorithm
directory-tree library: A simple directory-like tree datatype, with useful IO functions
dirfiles library
discrete-space-map library: A discrete space map.
discrimination library: Fast generic linear-time sorting, joins and container construction.
Dish library and program: Hash modules (currently Murmur3)
disjoint-set library: Persistent disjoint-sets, a.k.a union-find.
DistanceUnits library: A comprehensive distance library
dlist library: Difference lists
dlist-instances library: Difference lists instances
dockerfile library: A simple DSL for describing and generating Dockerfile containers in Haskell.
dotnet-timespan library: .NET TimeSpan
double-metaphone library: Haskell bindings to a C double-metaphone implementation.
dson library: Haskell DogeScript Object Notation Parser
dson-parsec library: DSON parser.
dstring library: Difference strings
dtab library and program: Harmonix (Guitar Hero, Rock Band) DTA/DTB metadata library
dtd-text library: Parse and render XML DTDs
dual-tree library: Rose trees with cached and accumulating monoidal annotations
dwarf library: Parser for DWARF debug format.
dwarf-el library: Parser for DWARF debug format.
dynamic-mvector library: A wrapper around MVector that enables pushing, popping and extending.
dynamic-object library: Object-oriented programming with duck typing and singleton classes.
dynamic-state library: Optionally serializable dynamic state keyed by type
DynamicTimeWarp library and programs: Dynamic time warping of sequences.
edit-distance-vector library: Calculate edit distances and edit scripts between vectors.
edit-lenses library: Symmetric, stateful edit lenses
edit-lenses-demo program: Programs demoing the use of symmetric, stateful edit lenses
editable library: Interactive editors for Generics
eigen library: Eigen C++ library (linear algebra: matrices, sparse matrices, vectors, ...
either-unwrap library: Functions for probing and unwrapping values inside of Either.
elerea-sdl library: Elerea FRP wrapper for SDL
elf library: Parser for ELF object format.
endo library: Endomorphism utilities.
engineering-units library: A numeric type for managing and automating engineering units.
entropy library: A platform independent entropy source
EnumContainers library: Simple Enum-class-based int containers
enumerable library: A typeclass for enumerating all values a type
enumerate library and program: enumerate all the values in a finite type (automatically)
enumeration library: A practical API for building recursive enumeration procedures and enumerating datatypes.
enumerator library: Reliable, high-performance processing with left-fold enumerators
enumfun library: Finitely represented /total/ EnumMaps
enummapmap library: Map of maps using Enum types as keys
enummapset library: IntMap and IntSet with Enum keys/elements.
enummapset-th library: TH-generated EnumSet/EnumMap wrappers around IntSet/IntMap.
enumset library: Sets of enumeration values represented by machine words
equivalence library: Maintaining an equivalence relation implemented as union-find using STT.
ess library: The type-level S combinator in Haskell.
EstProgress library: Methods for estimating the progress of functions
EuroIT library: Library for using euro currency, italian language
event-handlers library: Event handlers
event-list library: Event lists with relative or absolute time stamps
every-bit-counts library: A functional pearl on encoding and decoding using question-and-answer strategies
ex-pool library: Another fork of resource-pool, with a MonadIO and MonadCatch constraint
exact-pi library: Exact rational multiples of pi (and integer powers of pi)
exinst library: Derive instances for your existential types.
exinst-aeson library: Derive instances for the `aeson` library for your existential types.
exinst-bytes library: Derive instances for the `bytes` library for your existential types.
exinst-deepseq library: Derive instances for the `deepseq` library for your existential types.
exinst-hashable library: Derive instances for the `hashable` library for your existential types.
existential library and program: A library for existential types
extensible library: Extensible, efficient, lens-friendly data types
extensible-data library: Sums/products/lists/trees which can be extended in other modules
fadno-braids library: Braid representations in Haskell
failable-list library: A list-like type for lazy streams, which might terminate with an error.
fair-predicates library: Fair Predicates
family-tree library: A family tree library for the Haskell programming language.
fast-builder library: Fast ByteString Builder
fast-digits library: The fast library for integer-to-digits conversion.
fasta library: A simple, mindless parser for fasta files.
fay-text library: Fay Text type represented as JavaScript strings
fca library: Algo for Formal Concept Analysis
fclabels library: First class accessor labels implemented as lenses.
fclabels-monadlib library: MonadLib monadic interface for the "fclabels" package.
fields library: First-class record field combinators with infix record field syntax.
fieldwise library: ...
file-embed library: Use Template Haskell to embed file contents directly.
filecache library: A Linux-only cache system associating values to files.
filediff library: Diffing and patching module
filestore library: Interface for versioning file stores.
filesystem-conduit library: Use system-filepath data types with conduits. (deprecated)
filesystem-trees library: Recursively manipulate and traverse filesystems as lazy rose trees.
filtrable library: Class of filtrable containers
fingertree-tf library: Generic finger-tree structure using type families.
finite-field library: Finite Fields
finite-typelits library: A type inhabited by finitely many values, indexed by type-level naturals.
FiniteMap library: A finite map implementation, ...
first-and-last library: First and Last generalized to return up to n values
first-class-patterns library: First class patterns and pattern matching, using type families
fit library: FIT file decoder
fitsio library: A library for reading and writing data files in the FITS data format.
fixed-length library: Lists with statically known length based on non-empty package.
fixed-list library: A fixed length list type
fixed-point library: Binary fixed-point arithmetic
fixed-point-vector library: Unbox instances for the fixed-point package
fixed-point-vector-space library: vector-space instances for the fixed-point package
fixed-vector library: Generic vectors with statically known size.
fixed-vector-binary library: Binary instances for fixed-vector
fixed-vector-cereal library: Cereal instances for fixed-vector
fixed-vector-hetero library: Generic heterogeneous vectors
FixedPoint-simple library: Fixed point, large word, ...
fixedprec library: A fixed-precision real number type
fixfile library: File-backed recursive data structures.
fixpoint library: Data types as fixpoints
fixtime library: Some fixes to the time package
flat-maybe library: Strict Maybe without space and indirection overhead
flexible-time library: simple extension of Data.UnixTime.
flexiwrap library: Flexible wrappers
flexiwrap-smallcheck library: SmallCheck (Serial) instances for flexiwrap
float-binstring library: C99 printf "%a" style formatting and parsing
floating-bits library: Conversions between floating and integral values.
fmlist library: FoldMap lists
Focus library: Tools for focusing in on locations within numbers
focus library: A general abstraction for manipulating elements of container data structures
folds library: Beautiful Folding
folds-common library: A playground of common folds for folds
foscam-directory library: Foscam File format
foscam-filename library: Foscam File format
foscam-sort library and program: Foscam File format
Foster program: Utilities to generate and solve puzzles
fraction library: Fractions
Frames library and programs: Data frames For working with tabular data files
free-functors library: Free functors, adjoint to functors that forget class constraints.
frontmatter library: Parses frontmatter as used in Jekyll markdown files.
fsmActions library: Finite state machines and FSM actions
ftree library: Depth-typed functor-based trees, both top-down and bottom-up
full-text-search library and program: In-memory full text search engine
functional-kmp library: KMP implemented on haskell's built-in cons-cell-based lists.
functor-combo library: Functor combinators with tries & zippers
functor-infix library: Infix operators for mapping over compositions of functors. Lots of them.
functor-monadic library: Monad-style combinators for functors.
fusion library: Effectful streaming library based on shortcut fusion techniques
game-tree library: Searching game trees with alpha-beta pruning
gc library: Poor Richard's Memory Manager
gdiff library: Generic diff and patch
general-prelude library: Prelude replacement using generalized type classes where possible
generic-accessors library: stringly-named getters for generic data
generic-aeson library: Derivation of Aeson instances using GHC generics.
generic-binary library: Generic Data.Binary derivation using GHC generics.
generic-storable library: Generic implementation of Storable
generic-trie library: A map, where the keys may be complex structured data.
generic-xmlpickler library: Generic generation of HXT XmlPickler instances using GHC Generics.
genericserialize library: Serialization library using Data.Generics
geo-uk library: High precision conversion between GPS and UK Grid
geohash library: Geohash latitudes and longitudes.
geojson library: A thin GeoJSON Layer above the aeson library
git-date library: Bindings to the date parsing from Git.
git-object library: Git object and its parser
global library: Library enabling unique top-level declarations
global-variables library: Namespaced, global, and top-level mutable variables without unsafePerformIO.
gofer-prelude library: The Gofer 2.30 standard prelude
google-dictionary library: Simple interface to the google.com/dictionary API
google-mail-filters library: Write GMail filters and output to importable XML
googlepolyline library: Google Polyline Encoder/Decoder
gpcsets library: Generalized Pitch Class Sets for Haskell.
gps library: For manipulating GPS coordinates and trails.
gps2htmlReport library and program: GPS to HTML Summary Report
gpx-conduit library: Read GPX files using conduits
grapefruit-records library: A record system for Functional Reactive Programming
graph-core library: Fast, memory efficient and persistent graph implementation
graph-utils library: A simple wrapper & quasi quoter for fgl.
graphbuilder library: A declarative, monadic graph construction language for small graphs
graphene library: A minimal Graph Theory library.
greplicate library: Generalised replicate functions
group-with library: Classify objects by key-generating function, like SQL GROUP BY
grouped-list library: Grouped lists. Equal consecutive elements are grouped.
groupoid library: A Groupoid class
groups library: Haskell 98 groups
gtfs library: The General Transit Feed Specification format
hadoop-formats library: Read/write file formats commonly used by Hadoop.
hadoop-rpc library: Use the Hadoop RPC interface from Haskell.
hadoop-tools program: Fast command line tools for working with Hadoop.
HaLeX library and program: HaLeX enables modelling, manipulation and animation of regular languages
handa-geodata library and programs: Geographic and Geometric Data
har library: HAR spec in Haskell
has library and program: Entity based records
has-th library: Template Haskell function for Has records.
hash library: Hashing tools
hashable library: A class for types that can be converted to a hash value
hashable-extras library: Higher-rank Hashable
hashable-generics library: Automatically generates Hashable instances with GHC.Generics.
hashable-time library: Hashable instances for Data.Time
hashabler library: Principled, portable & extensible hashing of data and types, ...
hashmap library: Persistent containers Map and Set based on hashing.
hashring library: Efficient consistent hashing.
hashtables library: Mutable hash tables in the ST monad
hashtables-plus library: Extensions for a "hashtables" library
haskell-modbus library: A cereal-based parser for the Modbus protocol
haskell-qrencode library: Haskell bindings for libqrencode.
haxparse library and program: Readable HaxBall replays
Hayoo programs: The Hayoo! search engine for Haskell API search on hackage
hbcd library: Packed binary-coded decimal (BCD) serialization
hBDD library: An abstraction layer for BDD libraries
hBDD-CMUBDD library: An FFI binding to CMU/Long's BDD library
hBDD-CUDD library: An FFI binding to the CUDD library
hblock library: A mutable vector that provides indexation on the datatype fields it stores
hDFA library: A simple library for representing and minimising DFAs.
hebrew-time library: Hebrew dates and prayer times.
hedn library: EDN parsing and encoding
here library: Here docs & interpolated strings via quasiquotation
hetero-map library: Pure heterogeneous maps.
hex library: Convert strings into hexadecimal and back.
hexpat-pickle-generic library: Picklers for de/serialising Generic data types to and from XML
hexquote library: Hexadecimal ByteString literals, with placeholders that bind variables
hexstring library: Fast and safe representation of a hex string
HFrequencyQueue library: A Queue with a random (weighted) pick function
hgrib library and program: Unofficial bindings for GRIB API
hierarchy library: Pipes-based library for predicated traversal of generated trees
HiggsSet library: A multi-index set with advanced query capabilites
hinze-streams library: Streams and Unique Fixed Points
hips program: an IPS patcher
histogram-fill library: Library for histograms creation.
histogram-fill-binary library: Binary instances for histogram-fill package
histogram-fill-cereal library: Library for histograms creation.
hjcase library: Jcase library for Haskell
hjsonpointer library and program: JSON Pointer library
hjsonschema library and program: JSON Schema library
HList library: Heterogeneous lists
HMap library: Fast heterogeneous maps and unconstrained typeable like functionality.
hmatrix-csv library: CSV encoding and decoding for hmatrix.
hmatrix-repa library: Adaptors for interoperability between hmatrix and repa
hmemdb library: In-memory relational database
hmpfr library: Haskell binding to the MPFR library
hnetcdf library and programs: Haskell NetCDF library
hnix library and program: Haskell implementation of the Nix language
hole library: Higher kinded type removal
Holumbus-Searchengine library: A search and indexing engine.
hoodle-types library: Data types for programs for hoodle file format
hOpenPGP library: native Haskell implementation of OpenPGP (RFC4880)
hopenpgp-tools programs: hOpenPGP-based command-line tools
horizon library: Sunrise and sunset UTC approximations from latitude and longitude coordinates
hs-blake2 library: A cryptohash-inspired library for blake2
hs-excelx library: ...
hs-GeoIP library: Haskell bindings to the MaxMind GeoIPCity database via the C library
hs-php-session library: PHP session and values serialization
hs-pkg-config library: Create pkg-config configuration files
HSet library: Faux heterogeneous sets
hset library: Primitive list with elements of unique types.
HsJudy library: Judy bindings, and some nice APIs
hsndfile library: Haskell bindings for libsndfile
hsndfile-storablevector library: Haskell bindings for libsndfile (Data.StorableVector interface)
hsndfile-vector library: Haskell bindings for libsndfile (Data.Vector interface)
htoml library and program: Parser for TOML files
https-everywhere-rules library: High-level access to HTTPS Everywhere rulesets.
https-everywhere-rules-raw library: Low-level (i.e. XML) access to HTTPS Everywhere rulesets.
httpspec library: Specification of HTTP request/response generators and parsers
huffman library: Pure Haskell implementation of the Huffman encoding algorithm
HulkImport library and program: Easily bulk import CSV data to SQL Server
hunt-searchengine library: A search and indexing engine.
hunt-server program: A search and indexing engine server.
hvect library: Simple strict heterogeneous lists
hw-bits library and program: Conduits for tokenizing streams.
hw-conduit library and program: Conduits for tokenizing streams.
hw-diagnostics library and program: Conduits for tokenizing streams.
hw-json library and program: Conduits for tokenizing streams.
hw-parser library: Conduits for tokenizing streams.
hw-prim library and program: Primitive functions and data types
hw-rankselect library and program: Conduits for tokenizing streams.
hw-succinct library: Conduits for tokenizing streams.
hwsl2 library: Hashing with SL2
hwsl2-bytevector library: A hashed byte-vector based on algebraic hashes and finger trees
hwsl2-reducers library: Semigroup and Reducer instances for Data.Hash.SL2
hybrid-vectors library: Hybrid vectors e.g. Mixed Boxed/Unboxed vectors
idempotent library: Idempotent monoids
identifiers library: Numeric identifiers for values.
idna library: Implements IDNA (RFC 3490).
IDynamic library: Indexable, serializable form of Data.Dynamic
ieee754-parser library
implicit-params library: Named and unnamed implicit parameters with defaults.
impossible library: ...
incremental-computing library: Incremental computing
increments library: type classes for incremental updates to data
IndexedList library: ...
indices library: Multi-dimensional statically bounded indices.
infinite-search library: Exhaustively searchable infinite sets.
inflist library: An infinite list type and operations thereon.
ini library: Quick and easy configuration files in the INI format.
int-cast library: Checked conversions between integral types
intern library: Efficient hash-consing for arbitrary data types
interpolate library: String interpolation done right
interpolatedstring-perl6 library: QuasiQuoter for Perl6-style multi-line interpolated strings
interpolatedstring-qq library: QuasiQuoter for Ruby-style multi-line interpolated strings.
interpolatedstring-qq-mwotton library: DO NOT USE THIS. interpolatedstring-qq works now.
Interpolation library: Multiline strings, interpolation and templating.
Interpolation-maxs library: Multiline strings, interpolation and templating.
IntervalMap library: Containers for intervals, with efficient search.
intset library: Pure, mergeable, succinct Int sets.
invariant library: Haskell 98 invariant functors
invertible library: bidirectional arrows, bijective functions, and invariant functors
io-storage library: A key-value store in the IO monad.
io-streams library: Simple, composable, and easy-to-use stream I/O
ioctl library: Type-safe I/O control package
IORefCAS library: Atomic compare and swap for IORefs and STRefs.
irc library: A small library for parsing IRC messages.
irc-fun-messages library: Types and functions for working with the IRC protocol.
irc-fun-types library: Common types for IRC related packages
ireal library: Real numbers and intervals with relatively efficient exact arithmetic.
is library: Pattern predicates using TH
isevaluated library: Check whether a value has been evaluated
IsNull library: A typeclass to determine if a given value is null.
iso3166-country-codes library: A datatype for ISO 3166 country codes
iso639 library: ISO-639-1 language codes
iso8583-bitmaps library: Parse and merge ISO 8583-style bitmaps
iteratee library: Iteratee-based I/O
iteratee-compress library: Enumeratees for compressing and decompressing streams
iteratee-mtl library and program: Iteratee-based I/O
iteratee-parsec library: Package allowing parsec parser initeratee
iteratee-stm library: Concurrent iteratees using STM
iterIO library: Iteratee-based IO with pipe operators
ix-shapable library: Reshape multi-dimensional arrays.
javaclass library: Java class files
joinlist library: Join list - symmetric list type
json-autotype library and program: Automatic type declaration for JSON input data
json-extra library: Utility functions to extend Aeson
json-incremental-decoder library: Incremental JSON parser with early termination and a declarative DSL
json-pointer library: JSON Pointer parsing and interpretation utilities
json-schema library: Types and type classes for defining JSON schemas.
json-state library: Keep program state in JSON files.
json-togo library: Effectful parsing of JSON documents
json2 library: Library provides support for JSON.
json2-types library: Defined JSON data types and function for renders JSON to string.
jsonschema-gen library: JSON Schema generator from Algebraic data type
judy library: Fast, scalable, mutable dynamic arrays, maps and hashes
jump library: Nothing to see here, move along
kanji library: Perform 漢字検定 (Japan Kanji Aptitude Test) level analysis on Japanese Kanji.
karakuri library: Good stateful automata
katip library: A structured logging framework.
katip-elasticsearch library: ElasticSearch scribe for the Katip logging framework.
kd-tree library: A simple k-d tree implementation
kdt library: Fast and flexible k-d trees for various types of point queries.
keyed library: Generic indexing for many data structures
keyword-args library and program: Extract data from a keyword-args config file format
kicad-data library: Parser and writer for KiCad files.
kickchan library: Kick Channels: bounded channels with non-blocking writes
largeword library: Provides Word128, ...
lazyarray library: Efficient implementation of lazy monolithic arrays (lazy in indexes).
lens library: Lenses, Folds and Traversals
lens-action library: Monadic Getters and Folds
lens-datetime library: Lenses for Data.Time.* types
lens-family library: Lens Families
lens-family-core library: Haskell 98 Lens Families
lens-family-th library: Generate lens-family style lenses
lens-properties library: QuickCheck properties for lens
lens-time library: lens for Data.Time
lenses library: Simple Functional Lenses
lensref library: References which can be joined and on which lenses can be applied
lenz library: Van Laarhoven lenses
lenz-template library: Van Laarhoven lens templates
lhae program: Simple spreadsheet program
lhe library: Parser and writer for Les-Houches event files
Limit library: Wrapper for data that can be unbounded
linear-accelerate library: Instances to use linear vector spaces on accelerate backends
linear-maps library and programs: Finite maps for linear use
link-relations library: Use web link relation types (RFC 5988) in Haskell
linkedhashmap library: Persistent LinkedHashMap data structure
list-fusion-probe library: testing list fusion for success
list-grouping library: Functions for grouping a list into sublists
list-tries library and program: Tries and Patricia tries: finite sets and maps for list keys
list-zip-def library: Provides zips where the combining doesn't stop premature, ...
lists library: Functions for dealing with lists
listsafe library: Safe wrappers for partial list functions, supporting MonadThrow.
ListZipper library: Simple zipper for lists
literals library: Non-overloaded functions for concrete literals.
llrbtree library: Purely functional sets and heaps
llvm-base-types library: The base types for a mostly pure Haskell LLVM analysis library
llvm-data-interop library: A low-level data interoperability binding for LLVM
lockfree-queue library: Michael and Scott lock-free queues.
logfloat library: Log-domain floating point numbers
lookup-tables library: Statically generate lookup tables using Template Haskell.
lrucache library: a simple, pure LRU cache
LTree library: Tree with only leaves carrying the data.
lub library: information operators: least upper bound (lub) and greatest lower bound (glb)
luhn library: An implementation of Luhn's check digit algorithm.
macho library: Parser for Mach-O object format.
magma library: magma is an algebraic structure consisting a set together with an binary operation.
markov library: Simple interpreter for Markov's normal algorithms
markup library: Abstraction for HTML-embedded content
matrices library: native matrix based on vector
maybe-justify library: Simple higher order function for Maybe
mbox library: Read and write standard mailbox files.
Measure library: A library for units of measurement
meep library: A silly container
memoize library: A memoization library
MemoTrie library and program: Trie-based memo functions
messagepack library: Serialize instance for Message Pack Object
meta-misc library: Utility library providing miscellaneous meta-programming utilities.
metadata library: metadata library for semantic web
metric library: Metric spaces.
metrics library: High-performance application metric tracking
mgeneric library: Generics with multiple parameters
microlens library: A tiny part of the lens library with no dependencies
microlens-contra library: True folds and getters for microlens
microlens-each library: 'each' for microlens
microlens-ghc library: microlens + array, bytestring, containers, transformers
microlens-mtl library: microlens support for Reader/Writer/State from mtl
microlens-platform library: Feature-complete microlens
microlens-th library: Automatic generation of record lenses for microlens
minilens library: A minimalistic lens library, providing only the simplest, most basic lens functionality.
minst-idx library: Read and write IDX data that is used in e.g. the MINST database.
mlist library: Monadic List alternative to lazy I/O
mnist-idx library: Read and write IDX data that is used in e.g. the MNIST database.
monad-primitive library: Type class for monad transformers stack with pirimitive base monad.
monad-state library: Utility library for monads, particularly those involving state.
monad-statevar library: Concise, overloaded accessors for IORef, STRef, TVar
monad-supply library: Stateful supply monad.
mono-foldable library: Folds for monomorphic containers
mono-traversable library: Type classes for mapping, folding, and traversing monomorphic containers
monoid-extras library: Various extra monoid-related definitions and utilities
monoid-record library: Support for modifying record fields of monoidal type
monoid-subclasses library: Subclasses of Monoid
monoid-transformer library: Monoid counterparts to some ubiquitous monad transformers
monoidal-containers library: Containers with monoidal accumulation
monoidplus library: Extra classes/functions about monoids
monoids library: Deprecated: Use 'reducers'
monomorphic library: Library to convert polymorphic datatypes to/from its monomorphic represetation
mrm library: Modular Refiable Matching, first-class matches
msgpack library: A Haskell implementation of MessagePack
msgpack-aeson library: Aeson adapter for MessagePack
MSQueue library: Michael-Scott queue.
mtree library: Tree with Meta and Content parameters
multihash library and program: Multihash library and CLI executable
multipart-names library: Handling of multipart names in various casing styles
multirec-binary library: Generic Data.Binary instances using MultiRec.
murmur-hash library: MurmurHash2 implementation for Haskell.
murmur3 library: Pure Haskell implementation of the MurmurHash3 x86_32 algorithm.
murmurhash3 library: 32-bit non-cryptographic hashing
mutable-containers library: Abstactions and concrete implementations of mutable containers
mutable-iter library: iteratees based upon mutable buffers
MyPrimes library and program: Generate all primes
nagios-perfdata library: Parse Nagios performance data.
named-records library: Flexible records with named fields.
names library: Type level names.
nat library: Lazy binary natural numbers
natural-number library: Natural numbers tagged with a type-level representation of the number.
natural-numbers library: Natural numbers
naturals library: Constructors and related functions for natural numbers
nbt library: A parser/serializer for Minecraft's Named Binary Tag (NBT) data format.
ndjson-conduit library: Conduit-based parsing and serialization for newline delimited JSON.
neither library: Provide versions of Either with good monad and applicative instances. (deprecated)
NestedFunctor library: Nested composition of functors with a type index tracking nesting.
nestedmap library: A library for nested maps
network-address library and program: IP data structures and textual representation
network-conduit library: Stream socket data using conduits. (deprecated)
network-data library: Library for network data structures and their serialization.
network-enumerator library: Enumerators for network sockets
network-stream library: ByteString and Text streams for networking
NewBinary library: A binary I/O library
nextstep-plist library: NextStep style plist parser and printer
nf library: NF data type to statically enforce normal form
ngrams-loader library and program: Ngrams loader based on http://www.ngrams.info format
niagra library: CSS EDSL for Haskell
NineP library: 9P2000 in pure Haskell
non-empty library: List-like structures with static restrictions on the number of elements
NonEmpty library: Library providing a non-empty list datatype, and total functions operating on it
nonempty-alternative library: NonEmpty for Alternative types
NonEmptyList library: A list with a length of at least one.
notzero library: A data type for representing numeric values, except zero.
number-length library: Number of digits in a number in decimal and hexadecimal representation.
numbering library: Combinators for creating bijections from some type to the natural numbers.
numbers library: Various number types
NumInstances library: Instances of numeric classes for functions and tuples
NumLazyByteString library: Num, Enum, Eq, Integral, Ord, Real, and Show instances for Lazy ByteStrings
Object library: Object oriented programming for haskell using multiparameter typeclasses.
objectid library: Rather unique identifier for things that need to be stored
ObjectName library: Explicitly handled object names
observable-sharing library: Simple observable sharing
Octree library: Simple unbalanced Octree for storing data about 3D points
OddWord library: Provides a wrapper for deriving word types with fewer bits.
oi library and programs: Library for purely functional lazy interactions with the outer world.
Omega library: Integer sets and relations using Presburger arithmetic
once library: memoization for IO actions and functions
oneOfN library: Anonymous coproduct type
oneormore library: A never-empty list type.
oo-prototypes library: Support for OO-like prototypes
open-union library and program: Extensible, type-safe unions.
open-witness library: open witnesses
OpenAFP library: IBM AFP document format parser and generator
OpenAFP-Utils programs: Assorted utilities to work with AFP data streams
openexchangerates library: Fetch exchange rates from OpenExchangeRates.org
openpgp library: Implementation of the OpenPGP message format
openpgp-asciiarmor library: OpenPGP (RFC4880) ASCII Armor codec
OptDir library: The OptDir type for representing optimization directions.
optimal-blocks library and program: Optimal Block boundary determination for rsync-like behaviours
option library: A strict version of Maybe
optional-args library: Optional function arguments
ord-adhoc library: Creating Ord instances instantly
order-maintenance library: Algorithms for the order maintenance problem with a safe interface
order-statistic-tree library: Order statistic trees based on weight-balanced trees
OrderedBits library: Efficient ordered (by popcount) enumeration of bits
orders library: basic orders
orgmode library: Org Mode library for haskell
orgmode-parse library: A collection of Attoparsec combinators for parsing org-mode flavored documents.
origami library: An un-SYB framework for transforming heterogenous data through folds
osm-conduit library: Parse and operate on OSM data in efficient way
osx-ar library: Parser for OS X static archive format.
overloaded-records library: Overloaded Records based on current GHC proposal.
pack library: Bidirectional fast ByteString packer/unpacker
packed-dawg library: Generation and traversal of highly compressed directed acyclic word graphs.
packer library: Fast byte serializer and unserializer
packman library: Serialization library for GHC
pager library and program: Open up a pager, like 'less' or 'more'
palette library: Utilities for choosing and creating color schemes.
parameterized-data library: Parameterized data library implementing lightweight dependent types
parsergen library: TH parser generator for splitting bytestring into fixed-width fields
parsestar library and programs: NMR-STAR file format parser.
patch-combinators library: A library for patching functions and data structures
patches-vector library: Patches (diffs) on vectors: composable, mergeable, and invertible.
Peano library: simple Peano numbers
peano library: Peano numbers
peano-inf library: Lazy Peano numbers including observable infinity value.
PeanoWitnesses library: GADT type witnesses for Peano-style natural numbers.
pecoff library: Parser for PE/COFF format.
pem library: Privacy Enhanced Mail (PEM) format reader and writer.
peparser library: A parser for PE object files.
PerfectHash library: A perfect hashing library for mapping bytestrings to values.
perfecthash library: A perfect hashing library for mapping bytestrings to values.
persistent-equivalence library: Persistent equivalence relations (aka union-find)
persistent-refs library: Haskell references backed by an IntMap for persistence and reversibility.
persistent-vector library: A persistent sequence based on array mapped tries
pez library: A Pretty Extraordinary Zipper library
pgp-wordlist library: Translate between binary data and a human-readable collection of words.
phasechange library: Freezing, thawing, and copy elision
phash library: Haskell bindings to pHash, the open source perceptual hash library
phone-numbers library: Haskell bindings to the libphonenumber library
pipes-files library: Fast traversal of directory trees using pipes
pipes-interleave library: Interleave and merge streams of elements
Piso library: Partial isomorphisms
pkcs10 library: PKCS#10 library
pktree library: Implementation of the PKTree spatial index data structure
plailude library: plaimi's prelude
planar-graph library: A representation of planar graphs
pointed library: Pointed and copointed data
pointedlist library: A zipper-like comonad which works as a list, tracking a position.
poly-arity library: Tools for working with functions of undetermined arity
poly-control library: This package provides abstraction for polymorphic controls, ...
polymap library: Polygonal maps
polyToMonoid library: Polyvariadic functions mapping to a given monoid
polytypeable library: Typeable for polymorphic types.
polytypeable-utils library: Utilities for polytypeable.
pool library: Thread-safe resource pools. (deprecated)
possible library: Three valued Data.Maybe
postgresql-copy-escape library: Format data to feed to a PostgreSQL COPY FROM statement
pred-set library: Simple cached predicates
pred-trie library: Predicative tries
prednote library: Evaluate and display trees of predicates
prednote-test library and programs: Tests and QuickCheck generators to accompany prednote.
prefix-units library: A basic library for SI/binary prefix units
prelude-plus program: Prelude for rest of us
pretty-hex library: A library for hex dumps of ByteStrings
pretty-tree library: Pretty-print trees
prim-uniq library: Opaque unique identifiers in primitive state monads
primitive library: Primitive memory-related operations
primitive-simd library: SIMD data types and functions
PrimitiveArray library: Efficient multidimensional arrays
PrimitiveArray-Pretty library: Pretty-printing for primitive arrays
priority-queue library: Simple implementation of a priority queue.
procrastinating-structure library: Pure structures that can be incrementally created in impure code
procrastinating-variable library: Haskell values that cannot be evaluated immediately.
proj4-hs-bindings library: Haskell bindings for the Proj4 C dynamic library.
property-list library: Apple property list parser
protobuf library: Google Protocol Buffers via GHC.Generics
protobuf-native library and program: Protocol Buffers via C++
protobuf-simple library and program: Simple Protocol Buffers library (proto2)
proxied library: Make functions consume Proxy instead of undefined
proxy-kindness library: A library for kind-polymorphic manipulation and inspection of Proxy values
pseudo-boolean library: Reading/Writing OPB/WBO files used in pseudo boolean competition
publicsuffix library: The publicsuffix list exposed as proper Haskell types
PUH-Project library: This is a package which includes Assignments, Email, ...
pure-priority-queue library: A pure priority queue.
pure-priority-queue-tests program: Tests for the pure-priority-queue package
pureMD5 library: A Haskell-only implementation of the MD5 digest (hash) algorithm.
QLearn library: A library for fast, easy-to-use Q-learning.
QuadEdge library: QuadEdge structure for representing triangulations
quadratic-irrational library: An implementation of quadratic irrationals
QuadTree library: QuadTree library for Haskell, with lens support.
quandl-api library: Quandl.com API library
quantities library and program: Unit conversion and manipulation library.
querystring-pickle library: Picklers for de/serialising Generic data types to and from query strings
queue library: Abstraction typeclasses for queue-like things.
quick-schema library: Slimmed down json schema language and validator
quickset library: Very fast and memory-compact query-only set and map structures
rakhana library: Stream based PDF library
random-extras library: Additional functions for random values.
Range library: Data structure for managing ranges
range library: This has a bunch of code for specifying and managing ranges in your code.
range-set-list library: Memory efficient sets with ranges of elements.
Ranged-sets library: Ranged sets for Haskell
ranges library: Ranges and various functions on them.
rank1dynamic library: Like Data.Dynamic/Data.Typeable but with support for rank-1 polymorphic types
rcu library and programs: Read-Copy-Update for Haskell
record-aeson library: Instances of "aeson" classes for the "record" types
records library: A flexible record system
records-th library: Template Haskell declarations for the records package
redis-resp library: REdis Serialization Protocol (RESP) implementation.
reducers library: Semigroups, specialized containers and a general map/reduce framework
reedsolomon library and programs: Reed-Solomon Erasure Coding in Haskell
Ref library: Generic Mutable Ref Abstraction Layer
ref library: Generic Mutable Ref Abstraction Layer
refcount library: Container with element counts
reference library: A class for references in Haskell
refined library: Refinement types with static and runtime checking
reflection library: Reifies arbitrary terms into types that can be reflected back into terms
reflection-extras library: Utilities for the reflection package
reflection-without-remorse library: Efficient free and operational monads.
RefSerialize library: Write to and read from ByteStrings maintaining internal memory references
regex-easy library: sugar for regex-pcre
regex-type library: Type-level regular expressions
regexp-tries library: Regular Expressions on Tries.
regular-xmlpickler library: Generic generation of HXT XmlPickler instances using Regular.
rei program: Process lists easily
reify library and program: Serialize data
reinterpret-cast library: Memory reinterpretation casts for Float/Double and Word32/Word64
relative-date library: Durations and generalized time parsing
reord library: Ad-hoc Ord instances
reorderable library: Define compound types that do not depend on member order.
repa-linear-algebra library: HMatrix operations for Repa.
resource-pool library: A high-performance striped resource pooling implementation
resource-pool-catchio library: Fork of resource-pool, with a MonadCatchIO constraint
resourcet library: Deterministic allocation and freeing of scarce resources.
restricted-workers library: Running worker processes under system resource restrictions
reverse-arguments library: Reverse the arguments of arbitrary functions.
reverse-geocoding library: Simple reverse geocoding using OpenStreeMap
RFC1751 library: RFC-1751 library for Haskell
riff library and programs: RIFF parser for Haskell
ring-buffer library: A concurrent, mutable ring-buffer
ripple-federation library: Utilities and types to work with the Ripple federation protocol
rivers library: Rivers are like Streams, but different.
rng-utils library: RNG within an MVar for convenient concurrent use
rolling-queue library: Bounded channel for STM that discards old entries when full
rose-trees library: A collection of rose tree structures.
rose-trie library: Provides "Data.Tree.RoseTrie": trees with polymorphic paths to nodes, ...
roundtrip-aeson library: Un-/parse JSON with roundtrip invertible syntax definitions.
route-planning library: A library and utilities for creating a route
rowrecord library: Build records from lists of strings, as from CSV files.
rtorrent-state library: Parsing and manipulation of rtorrent state file contents
ruby-marshal library: Parse a subset of Ruby objects serialised with Marshal.dump.
runmemo library: A simple memoization helper library
s-cargot library: A flexible, extensible s-expression library.
safe-freeze library: Support for safely freezing multiple arrays in the ST monad.
safe-globals library: Safe top-level mutable variables which scope like ordinary values
safe-length library: Tired of accidentally calling length on tuples? Relief at last!
safecopy library: Binary serialization with version control.
safeint library: overflow-checked Int type
schedule-planner program: Find the ideal lesson layout
scientific library: Numbers represented using scientific notation
sec library: Semantic Editor Combinators.
securemem library: abstraction to an auto scrubbing and const time eq, memory chunk.
SegmentTree library and program: Data structure for querying the set (or count) of intervals covering given point
semi-iso library: Weakened partial isomorphisms, reversible computations.
Semigroup library: A semigroup
semigroupoids-syntax library: RebindableSyntax using the semigroupoids package
semigroups library: Anything that associates
semigroups-actions library: Semigroups actions
semver library: Representation, manipulation, and de/serialisation of Semantic Versions.
separated library: A data type with elements separated by values
seqid library: Sequence ID production and consumption
sequence library: A type class for sequences and various sequence data structures.
sequential-index library: Sequential numbers that allow arbitrarily inserting numbers - for containers
set-extra library: Functions that could be added to Data.Set.
set-monad library: Set monad
setops library: Uniform names (and Unicode operators) for set operations on data structures.
sets library: Various set implementations in Haskell.
setters library: Small (TH) library to declare setters for typical `record' data type fields.
settings library: Runtime-editable program settings.
sext library: Lists, Texts and ByteStrings with type-encoded length
SG library: Small geometry library for dealing with vectors and collision detection
sgf library: SGF (Smart Game Format) parser
shapely-data library: Generics using @(,)@ and @Either@, with algebraic operations and typed conversions
shortcircuit library: Short-circuit values and expressions.
sieve library: Sieve is an implementation of the Sieve abstract data type.
sign library: Arithmetic over signs and sets of signs
simple-atom library: Atom (or symbol) datatype for fast comparision and sorting.
simple-conduit library: A simple streaming I/O library based on monadic folds
simple-index library: Allows simple indexation on any data type
simple-pipe library: simple pipeline library like conduit
simple-rope library: Memory-efficient strings with concatenation and splitting.
simtreelo library: Loader for data organized in a tree
singleton-nats library: Unary natural numbers relying on the singletons infrastructure.
sink library: An alternative to lazy I/O that doesn't conflate execution with evaluation
siphash library: siphash: a fast short input PRF
SizeCompare library: Fast size comparison for standard containers.
sized library: Sized sequence data-types
sized-vector library: Size-parameterized vector types and functions.
smallarray library: low-level unboxed arrays, with minimal features.
smallstring library: A Unicode text type, optimized for low memory overhead
smaoin library: Utilities for the Smaoin semantic information model.
smoothie library: Smooth curves via several interpolation modes
snowflake library: A loose port of Twitter Snowflake to Haskell. Generates arbitrary precision, ...
sorted library: Efficient, type-safe sorted sequences
sorted-list library: Type-enforced sorted lists and related functions.
sorting library: Utils for sorting.
spacepart library: Space partition data structures. Currently only a QuadTree.
sparse library: A playground of sparse linear algebra primitives using Morton ordering
spdx library: SPDX license expression language
special-keys library: Simple data types that help me here and there.
SpinCounter library: Lock free Spin Counter
splaytree library: Provides an annotated splay tree
spreadsheet library and program: Read and write spreadsheets from and to CSV files in a lazy way
srcloc library: Data types for managing source code locations.
srec library: Parsing and processing s-records.
sstable library and programs: SSTables in Haskell
stable-memo library: Memoization based on argument identity
stable-tree library and program: Trees whose branches are resistant to change
stack-prism library: Stack prisms
stackage-types library: Shared data types between various Stackage packages
state library: Data.State
state-record library: Better records for State monad states
stateref library: Abstraction for things that work like IORef.
StateVar library: State variables
StateVar-transformer library: State variables
stdata library: Structure Data Library
stdf library and programs: Parse Structured Test Data Format (STDF)
step-function library: Step functions, staircase functions or piecewise constant functions
stm-linkedlist library: Mutable, doubly linked lists for STM
stm-sbchan library: Bounded channel for STM where item sizes can vary
stm-tlist library: Mutable, singly-linked list in STM
storable library: Storable type class for variable-sized data
storable-complex library: Storable instance for Complex
storable-endian library: Storable instances with endianness
storable-record library and program: Elegant definition of Storable instances for records
storable-tuple library: Storable instance for pairs and triples
storablevector library: Fast, packed, strict storable arrays with a list interface like ByteString
storablevector-carray library: Conversion between storablevector and carray
storablevector-streamfusion library and program: Conversion between storablevector and stream-fusion lists with fusion
Strafunski-ATermLib library: An abstract data type designed for the exchange of tree-like data structures
Stream library: A library for manipulating infinite lists.
stream library: Initial project template from stack
stream-fusion library: Faster Haskell lists using stream fusion
streaming library: an elementary streaming prelude and general stream type.
streaming-bytestring library: effectful byte steams, or: bytestring io done right.
streaming-commons library: Common lower-level functions needed by various streaming data libraries
streaming-utils library: http, attoparsec, pipes and conduit utilities for the streaming libraries
strict library: Strict data types and String IO.
strict-base-types library: Strict variants of the types provided in base.
string-class library: String class library
string-combinators library: Polymorphic functions to build and combine stringlike values
string-conv library: Standardized conversion between string types
string-conversions library: Simplifies dealing with different types for strings
string-qq library: QuasiQuoter for non-interpolated strings, texts and bytestrings.
string-quote library: QuasiQuoter for non-interpolated strings, texts and bytestrings.
string-similarity library: longest common substring
string-typelits library: Type-level Chars and Strings, with decidable equality.
stringable library: A Stringable type class, in the spirit of Foldable and Traversable
stringprep library: Implements the "StringPrep" algorithm
stringtable-atom library: Memoize Strings as Atoms for fast comparison and sorting, with maps and sets
strptime library: Efficient parsing of LocalTime using a binding to C's strptime, ...
structs library: Strict GC'd imperative object-oriented programming with cheap pointers.
structures library: "Advanced" Data Structures
success library: A version of Either specialised for encoding of success or failure
suffixarray library and programs: n log n implementation of suffix array.
SuffixStructures library and program: Suffix array construction
suffixtree library: Efficient, lazy suffix tree implementation
suitable library: Abstract over the constraints on the parameters to type constructors
swagger library: Implementation of swagger data model
syb-with-class library: Scrap Your Boilerplate With Class
syb-with-class-instances-text library: Scrap Your Boilerplate With Class Text instance
symbol library: A 'Symbol' type for fast symbol comparison.
syntax library: Reversible parsing and pretty-printing.
syntax-attoparsec library: Syntax instances for Attoparsec.
syntax-example program: Example application using syntax, a library for abstract syntax descriptions.
syntax-example-json program: Example JSON parser/pretty-printer.
syntax-pretty library: Syntax instance for pretty, the pretty printing library.
syntax-printer library: Text and ByteString printers for 'syntax'.
t-regex library: Matchers and grammars using tree regular expressions
tables library: In-memory storage with multiple keys using lenses and traversals
tagged library: Haskell 98 phantom types to avoid unsafely passing dummy arguments
tagged-binary library: Provides tools for serializing data tagged with type information.
tagged-list library: Lists tagged with a type-level natural number representing their length.
tagged-transformer library: Provides newtype wrappers for phantom types to avoid unsafely passing dummy arguments
tagging library: Library for tagging data
tai64 library: Tai64 Labels for Haskell
Tainted library: Tainted type, and associated operations
Tape library: Bidirectionally infinite streams, akin to the tape of a Turing machine.
tbox library: Transactional variables and data structures with IO hooks
TCache library: A Transactional cache with user-defined persistence
template-default library: declaring Default instances just got even easier
Tensor library: Tensor data types
tensor library: A completely type-safe library for linear algebra
text library: An efficient packed Unicode text type.
text-binary library: Binary instances for text types
text-icu library: Bindings to the ICU library
text-locale-encoding library: Encode and decode Text to/from ByteString using TextEncoding
text-manipulate library: Case conversion, word boundary manipulation, and textual subjugation.
text-normal library: Unicode-normalized text
text-position library: Handling positions in text and position-tagging it.
text-regex-replace library: Easy replacement when using text-icu regexes.
text-stream-decode library: Streaming decoding functions for UTF encodings. (deprecated)
text-utf7 library: UTF-7 encoding/decoding for Data.Text
these library: An either-or-both data type & a generalized 'zip with padding' typeclass
thorn library: Datatype Manipulation with Template Haskell
through-text library: Convert textual types through Text without needing O(n^2) instances.
thyme library: A faster time library
tickle library: A port of @Data.Binary@
tiempo library: Specify time intervals in different units (secs, mins, hours, etc.)
tight-apply library: Tightly binding infix function application
time-interval library: Use a time unit class, but hold a concrete time type.
time-lens library: Lens-based interface to Data.Time data structures
time-patterns library: Patterns for recurring events.
time-series library and program: Time series analysis.
time-units library: A basic library for defining units of time as types.
timelike library: Type classes for types representing time
timemap library and program: A mutable hashmap, implicitly indexed by UTCTime.
timeparsers library: Attoparsec parsers for various Date/Time formats.
timezone-olson library: A pure Haskell parser and renderer for binary Olson timezone files
timezone-olson-th library: Load TimeZoneSeries from an Olson file at compile time.
timezone-series library: Enhanced timezone handling for Data.Time
tiphys library: Navigating and editing JSON data
tmpl program: simple executable for templating
to-string-class library: Converting string-like types to Strings.
to-string-instances library: Instances for the ToString class.
tomato-rubato-openal library: Easy to use library for audio programming.
tostring library: The ToString class
total-map library: Finitely represented /total/ maps
total-maps library: Dense and sparse total maps.
Transhare library: ...
traverse-with-class library: Generic applicative traversals
tree-view library: Render trees as foldable HTML and Unicode art
TreeCounter library: Wait-free Tree Counter
Treiber library: Lock free Treiber stack
tries library: Various trie implementations in Haskell
true-name library: Template Haskell hack to violate module abstractions
truthful library: Typeclass for truthfulness of values
tskiplist library: A Skip List Implementation in Software Transactional Memory (STM)
ttask library and program: This is task management tool for yourself, that inspired by scrum.
tup-functor library and program: Homogeneous tuples
tuple library: Various functions on tuples
tuple-gen library: Enum instances for tuples where the digits increase with the same speed
tuple-generic library: Generic operations on tuples
tuple-hlist library: Functions to convert between tuples and HLists.
tuple-morph library: Morph between tuples, or convert them from and to HLists.
tuple-th library: Generate (non-recursive) utility functions for tuples of statically known size
tupleinstances library: Functor, Applicative and Monad for n-ary tuples.
tuples-homogenous-h98 library: Wrappers for n-ary tuples with Traversable and Applicative/Monad instances.
ty library: Typed type representations and equality proofs
type library: Dynamic casting library with support for arbitrary rank type kinds.
type-aligned library: Various type-aligned sequence data structures.
type-combinators library: A collection of data types for type-level programming
type-combinators-quote library: Quasiquoters for the 'type-combinators' package.
type-equality library: Type equality, coercion/cast and other operations.
type-equality-check library: Type equality check
type-iso library: Typeclasses for injective relations and isomorphisms between types.
type-level library: Type-level programming library
type-level-natural-number library: Simple type level natural numbers
type-level-natural-number-induction library: High-level combinators for performing inductive operations.
type-level-natural-number-operations library: Basic operations on type-level natural numbers.
type-level-tf library: Type-level programming library (type families)
type-list library: Operations on type-level lists and tuples.
type-structure library: Type structure analysis
type-unary library: Type-level and typed unary natural numbers, inequality proofs, vectors
typeable-th library: Automatic deriving of TypeableN instances with Template Haskell
typelevel-tensor library: Tensors whose ranks and dimensions type-inferred and type-checked.
typelits-witnesses library: Existential witnesses, singletons, and classes for operations on GHC TypeLits
TypeNat library: Some Nat-indexed types for GHC
typeparams library: ...
typesafe-endian library: Enforce endianness with types
typical library: Type level numbers, vectors, list. This lib needs to be extended.
tz library: Efficient time zone handling
tzdata library: Time zone database (as files and as a module)
udcode library: Does a set of code words form a uniquely decodable code?
uglymemo library: A simple (but internally ugly) memoization function.
uid library: Simple unique identifier datatype, serializable and encodable as base32
unamb library and program: Unambiguous choice
unamb-custom library: Functional concurrency with unamb using a custom scheduler.
unboxed-containers library: Self-optimizing unboxed sets using view patterns and data families
ungadtagger library: Abstract GADTs from typelevel tags
uniform-pair library: Uniform pairs with class instances
union library: Extensible type-safe unions
union-find library: Efficient union and equivalence testing of sets.
union-find-array library: union find data structure
union-map library: Heterogeneous map by open unions.
Unique library: It provides the functionality like unix "uniq" utility
unique library: Fully concurrent unique identifiers
uniqueid library: Splittable Unique Identifier Supply
unit library: Aliases for ().
universal-binary library: Parser for OS X Universal Binary format.
universe library: Classes for types where we know all the values
universe-base library: ...
universe-instances-base library: Universe instances for types from the base package
universe-instances-extended library: Universe instances for types from select extra packages
universe-instances-trans library: Universe instances for types from the transformers and mtl packages
universe-reverse-instances library: instances of standard classes that are made possible by enumerations
unix-time library: Unix time parser/formatter and utilities
unordered-containers library: Efficient hashing-based container types
unsafely library and programs: Flexible access control for unsafe operations and instances
urlpath library: Painfully simple URL deployment.
urn library: Universal Resource Names
userid library: The UserId type and useful instances for web development
users-persistent library: A persistent backend for the users package
utc library: A pragmatic time and date library.
utility-ht library: Various small helper functions for Lists, Maybes, Tuples, Functions
uuid library: For creating, comparing, parsing and printing Universally Unique Identifiers
uuid-aeson library: Aeson types for UUID instances.
uuid-le library: Universally Unique Identifiers with little-endian-ish encoding tools
uuid-quasi library: Supplemental package for 'uuid' allowing quasiquotation.
uuid-types library: Type definitions for Universally Unique Identifiers
uvector library: Fast unboxed arrays with a flexible interface
uvector-algorithms library: Efficient algorithms for uvector unboxed arrays
uxadt library: Cross-language extensible representation for algebraic data type instances.
validated-literals library: Compile-time checking for partial smart-constructors
Validation library: A data-type like Either but with an accumulating Applicative
validation library: A data-type like Either but with an accumulating Applicative
value-supply library: A library for generating values without having to thread state.
var library: Mutable variables and tuples
vault library: a persistent store for values of arbitrary types
vcd library: Reading and writing VCD files.
vcs-revision library: Facilities for accessing the version control revision of the current directory.
Vec library: Fixed-length lists and low-dimensional linear algebra.
Vec-Boolean library: Provides Boolean instances for the Vec package
VecN library: a simple peano-indexed vector type
vector library: Efficient Arrays
vector-algorithms library and program: Efficient algorithms for vector arrays
vector-binary library: Binary instances for vector types (deprecated)
vector-binary-instances library: Instances of Data.Binary and Data.Serialize for vector
vector-buffer library: A buffer compatible with Data.Vector.*
vector-bytestring library and program: ByteStrings as type synonyms of Storable Vectors of Word8s
vector-clock library: Vector clocks for versioning message flows
vector-conduit library: Conduit utilities for vectors
vector-functorlazy library: vectors that perform the fmap operation in constant time
vector-heterogenous library: A type-safe library for vectors whose elements can be of any type, ...
vector-instances library: Orphan Instances for 'Data.Vector'
vector-instances-collections library: Instances of the Data.Collections classes for Data.Vector.*
vector-mmap library: Memory map immutable and mutable vectors
vector-random library: Generate vectors filled with high quality pseudorandom numbers
vector-read-instances library: (deprecated) Read instances for 'Data.Vector'
vector-sized library: Size tagged vectors
vector-static library: Statically checked sizes on Data.Vector
vector-th-unbox library: Deriver for Data.Vector.Unboxed using Template Haskell
verbosity library: Simple enum that encodes application verbosity.
versions library: Types and parsers for software version numbers.
vocabulary-kadma library: Smaoin vocabulary definitions of the base framework.
warc library and program: A parser for the Web Archive (WARC) format
WAVE library and program: WAVE audio file IO library
wavesurfer library: Parse WaveSurfer files
wiring library: Wiring, promotion and demotion of types.
with-location library: Use ImplicitParams-based source locations in a backward compatible way
witherable library: Generalization of filter and catMaybes
witness library: values that witness types
wkt library: Parsec parsers and types for geographic data in well-known text (WKT) format.
WMSigner library: WebMoney authentication module
woffex program: Web Open Font Format (WOFF) unpacker.
woot library: Real time group editor without operational transform.
word-trie library: Implementation of a finite trie over words.
word12 library: Word12 library.
word24 library: 24-bit word and int types for GHC
word8 library: Word8 library
wrap library: Wrap a function's return value with another function
wraparound library: Convenient handling of points on a seamless 2-dimensional plane
wright library: Colour space transformations and metrics.
x509 library: X509 reader and writer
x509-store library: X.509 collection accessing and storing methods
x509-system library: Handle per-operating-system X.509 accessors and storage
x509-util program: Utility for X509 certificate and chain
x509-validation library: X.509 Certificate and CRL validation
xcb-types library: Parses XML files used by the XCB project
xml-query library: A parser-agnostic declarative API for querying XML-documents
xml-query-xml-conduit library: A binding for the "xml-query" and "xml-conduit" libraries
xml-query-xml-types library: An interpreter of "xml-query" queries for the "xml-types" documents
xournal-types library: Data types for programs for xournal file format
xxhash library: A Haskell implementation of the xxHash algorithm
yahoo-finance-conduit library: Streaming aproach to the yahoo finance api
yall library: Lenses with a southern twang
yamemo library: Simple memoisation function
yaml-light library: A light-weight wrapper with utility functions around HsSyck
yaml-light-lens library: Lens interface to yaml-light.
yaml-union library and program: Read multiple yaml-files and override fields recursively
zalgo library: Z-algorithm implemented on haskell's built-in cons-cell-based lists.
zcache library: Zobrist keys for game state tracking
zero library: Semigroups with absorption
ZipFold library: Zipping folds
zippo library: A simple lens-based, generic, heterogenous, type-checked zipper library
zlib-conduit library: Streaming compression/decompression via conduits. (deprecated)

Data Flow

yarr library: Yet another array library

Data Mining

dtw library: (Fast) Dynamic Time Warping
Emping program: derives heuristic rules from nominal data
hinduce-associations-apriori library: Apriori algorithm for association rule mining
hinduce-classifier library: Interface and utilities for classifiers
hinduce-classifier-decisiontree library: Decision Tree Classifiers for hInduce
hinduce-examples library: Example data for hInduce
hlcm library and programs: Fast algorithm for mining closed frequent itemsets
HLearn-algebra library: Algebraic foundation for homomorphic learning
HLearn-approximation library
HLearn-classification library
HLearn-datastructures library
HLearn-distributions library: Distributions for use with the HLearn library
HMM library: A hidden markov model library
hmm library: A hidden markov model library
hps-kmeans library: A nice implementation of the k-Means algorithm.
hsgsom library: An implementation of the GSOM clustering algorithm.
kmeans library: K-means clustering algorithm

Data Structure

tree-fun library: Library for functions pertaining to tree exploration and manipulation

Data Structures

adjunctions library: Adjunctions and representable functors
adp-multi library and programs: ADP for multiple context-free languages
adp-multi-monadiccp library and program: Subword construction in adp-multi using monadiccp
ADPfusion library and programs: Efficient, high-level dynamic programming.
AlignmentAlgorithms library: Collection of alignment algorithms
array library: Mutable and immutable arrays
array-utils library: Primitive functions for updating many elements in mutable arrays at once
AvlTree library: Balanced binary trees using the AVL algorithm.
bag library: A simple stable bag.
BiobaseTypes library: Collection of types for bioinformatics
bit-array library: A bit array (aka bitset, bitmap, bit vector) API for numeric types
bitset library: A space-efficient set data structure.
bitwise library: fast multi-dimensional unboxed bit packed Bool arrays
bk-tree library: BK-tree implementation
bktrees library: A set data structure with approximate searching
boolexpr library: Boolean expressions with various representations and search queries.
btree-concurrent library: A backend agnostic, concurrent BTree
bytestring-trie library: An efficient finite map from (byte)strings to values.
cmph library: low level interface to CMPH
collections library: Useful standard collections types and related functions.
collections-api library: API for collection data structures.
collections-base-instances library: Useful standard collections types and related functions.
container-classes library: Generic classes for interacting with different container types
containers library: Assorted concrete container types
CTRex library: Open records using closed type families.
ctrie library: Non-blocking concurrent map
data-clist library: Simple functional ring type.
data-lens-ixset library: A Lens for IxSet
data-r-tree library: R-Tree is a spatial data structure similar to Quadtrees or B-Trees.
data-stringmap library: An efficient implementation of maps from strings to arbitrary values
dawg library: Directed acyclic word graphs
dawg-ord library: Directed acyclic word graphs
dequeue library: A typeclass and an implementation for double-ended queues.
diffarray library: DiffArray
disjoint-sets-st library: Imperative ST/IO based disjoint set data structure.
distributive library: Distributive functors -- Dual to Traversable
dph-base library: Data Parallel Haskell common config and debugging functions.
dph-examples programs: Data Parallel Haskell example programs.
dph-lifted-base library: Data Parallel Haskell common definitions used by other dph-lifted packages.
dph-lifted-copy library: Data Parallel Haskell lifted array combinators. (deprecated version)
dph-lifted-vseg library: Data Parallel Haskell lifted array combinators.
dph-par library: (deprecated)
dph-prim-interface library: Data Parallel Haskell segmented arrays. (abstract interface)
dph-prim-par library: Data Parallel Haskell segmented arrays. (production version)
dph-prim-seq library: Data Parallel Haskell segmented arrays. (sequential implementation)
dph-seq library: (deprecated)
DrIFT library and programs: Program to derive type class instances
DrIFT-cabalized programs: Program to derive type class instances
EdisonAPI library: A library of efficent, purely-functional data structures (API)
EdisonCore library: A library of efficent, purely-functional data structures (Core Implementations)
edit-distance-vector library: Calculate edit distances and edit scripts between vectors.
EnumMap library: More general IntMap replacement.
enummapmap library: Map of maps using Enum types as keys
Etage-Graph library and program: Data-flow based graph algorithms
ethereum-client-haskell programs: A Haskell version of an Ethereum client
ethereum-merkle-patricia-db library: A modified Merkle Patricia DB
ethereum-rlp library: Ethereum Recursive Length Prefix Encoding
exposed-containers library: A distribution of the 'containers' package, with all modules exposed.
FenwickTree library: Data structure for fast query and update of cumulative sums
fgl library: Martin Erwig's Functional Graph Library
fgl-extras-decompositions library: Graph decomposition algorithms
fingertree library: Generic finger-tree structure, with example instances
fingertree-psqueue library: Implementation of priority search queues as finger trees.
fingertree-tf library: Generic finger-tree structure using type families.
generic-tree library: Generic Tree data type
GiST library: A Haskell implementation of a Generalized Search Tree (GiST)
gmap library: Composable maps and generic tries.
graph-matchings library: An implementation of algorithms for matchings in graphs
graph-utils library: A simple wrapper & quasi quoter for fgl.
graph-wrapper library: A wrapper around the standard Data.Graph with a less awkward interface
graphs library: A simple monadic graph library
gtk-largeTreeStore library: Large TreeStore support for gtk2hs
hamtmap library: A purely functional and persistent hash map
hashtables-plus library: Extensions for a "hashtables" library
heap library: Heaps in Haskell
heaps library: Asymptotically optimal Brodal/Okasaki heaps.
hetero-map library: Pure heterogeneous maps.
hgal library: library for computation automorphism group and canonical labelling of a graph
HLearn-approximation library
HLearn-datastructures library
HMap library: Fast heterogeneous maps and unconstrained typeable like functionality.
hobbits library: A library for canonically representing terms with binding
HoleyMonoid library: Monoids with holes.
igraph library: Bindings to the igraph C library.
intern library: Efficient hash-consing for arbitrary data types
iterable library: API for hierarchical multilevel collections.
ixset library: Efficient relational queries on Haskell sets.
ixset-typed library: Efficient relational queries on Haskell sets.
kan-extensions library: Kan extensions, Kan lifts, various forms of the Yoneda lemma, and (co)density (co)monads
keys library: Keyed functors and containers
labeled-graph library: Labeled graph structure
labeled-tree library: Labeled tree structure
lca library: O(log n) persistent on-line lowest common ancestor calculation without preprocessing
libgraph library: Store and manipulate data in a graph.
list-t library: ListT done right
list-tries library and program: Tries and Patricia tries: finite sets and maps for list keys
listlike-instances library: Extra instances of the ListLike class
magma library: magma is an algebraic structure consisting a set together with an binary operation.
map-exts library and programs: Extensions to Data.Map
map-syntax library: Syntax sugar for defining maps
meldable-heap library: Asymptotically optimal, Coq-verified meldable heaps, AKA priority queues
monadic-arrays library: Boxed and unboxed arrays for monad transformers
multimap library: A multimap.
multiset library: The Data.MultiSet container type
nested-sets library: Nested set model implementation
nibblestring library: Packed, strict nibble arrays with a list interface (ByteString for nibbles)
nthable library
PerfectHash library: A perfect hashing library for mapping bytestrings to values.
perfecthash library: A perfect hashing library for mapping bytestrings to values.
permutation library: A library for permutations and combinations.
pqueue library: Reliable, persistent, fast priority queues.
PSQueue library: Priority Search Queue
psqueues library: Pure priority search queues
quickset library: Very fast and memory-compact query-only set and map structures
ralist library: Random access list with a list compatible interface.
random-access-list library: Random-access lists in Haskell
random-tree library: Create random trees
randproc library: Data structures and support functions for working with random processes
RBTree library: Pure haskell Red-Black-Tree implemetation
record library: Anonymous records
reflection-without-remorse library: Efficient free and operational monads.
relacion library: A relation data structure.
relation library: A data structure representing Relations on Sets.
repa library: High performance, regular, shape polymorphic parallel arrays.
repa-algorithms library: Algorithms using the Repa array library.
repa-array library: Bulk array representations and operators.
repa-bytestring library: (deprecated)
repa-convert library: Packing and unpacking flat tables.
repa-devil library: Support for image reading and writing of Repa arrays using in-place FFI calls
repa-eval library: Low-level parallel operators on bulk random-accessble arrays.
repa-examples programs: Examples using the Repa array library.
repa-fftw library: Perform fft with repa via FFTW
repa-flow library: Data-parallel data flows.
repa-io library: Read and write Repa arrays in various formats.
repa-plugin library: Data Flow Fusion GHC Plugin.
repa-scalar library: Scalar data types and conversions.
repa-series library: Series Expressionss API
repa-sndfile library and programs: Reading and writing sound files with repa arrays
repa-stream library: Stream functions not present in the vector library.
representable-functors library: Representable functors
representable-tries library: Tries from representations of polynomial functors
rosezipper library: Generic zipper implementation for Data.Tree
semigroups library: Anything that associates
semigroups-actions library: Semigroups actions
sequence library: A type class for sequences and various sequence data structures.
signed-multiset library: Multisets with negative membership.
sirkel library: Sirkel, a Chord DHT
sparsebit library: Sparse bitmaps for pattern match coverage
splay library: Generic splay-based sequence representation
spool library: Convert between ByteString and Vector.Storable without copying
stable-heap library: Purely functional stable heaps (fair priority queues)
statethread library: The ST monad and STRefs
static-hash library: Immutable hash
stm-containers library: Containers for STM
SuffixStructures library and program: Suffix array construction
suffixtree library: Efficient, lazy suffix tree implementation
swapper library: Transparently swapping data from in-memory structures to disk
TernaryTrees library and program: Efficient pure ternary tree Sets and Maps
thrist library: Type-threaded list
tie-knot library: "Ties the knot" on a given set of structures that reference each other by keys.
total-maps library: Dense and sparse total maps.
translatable-intset library and program: Integer sets with a constant time translate operation.
TreeStructures library: A collection of heaps and search trees
tst library: BK-tree implementation
type-aligned library: Various type-aligned sequence data structures.
type-level-bst library: type-level binary search trees in haskell
type-level-sets library: Type-level sets and finite maps (with value-level counterparts)
unordered-graphs library: Graph library using unordered-containers
vector library: Efficient Arrays
vector-clock library: Vector clocks for versioning message flows
vector-functorlazy library: vectors that perform the fmap operation in constant time
vector-heterogenous library: A type-safe library for vectors whose elements can be of any type, ...
vector-instances library: Orphan Instances for 'Data.Vector'
vector-mmap library: Memory map immutable and mutable vectors
vector-read-instances library: (deprecated) Read instances for 'Data.Vector'
vector-static library: Statically checked sizes on Data.Vector
void library: A Haskell 98 logically uninhabited data type
yarr library: Yet another array library

Database

acid-state library: Add ACID guarantees to any serializable Haskell data structure.
acid-state-dist library: A replication backend for acid-state
acid-state-tls library: Add TLS support for Data.Acid.Remote
algebra-dag library: Infrastructure for DAG-shaped relational algebra plans
algebra-sql library and programs: Relational Algebra and SQL Code Generation
anydbm library and program: Interface for DBM-like database systems
arena library: A journaled data store
basex-client library: A BaseX client for Haskell
bbdb library: Ability to read, write, and examine BBDB files
beam library: A type-safe SQL mapper for Haskell that doesn't use Template Haskell
BerkeleyDB library: Berkeley DB binding
berkeleydb library: Pretty BerkeleyDB v4 binding.
BerkeleyDBXML library: Berkeley DB XML binding
bindings-sophia library: Low-level bindings to sophia library
blacktip library: Decentralized, k-ordered unique ID generator.
bloodhound library: ElasticSearch client library for Haskell
cassandra-cql library: Haskell client for Cassandra's CQL protocol
cassandra-thrift library: thrift bindings to the cassandra database
cassy library: A high level driver for the Cassandra datastore
cayley-client library: A Haskell client for the Cayley graph database
consumers library: Concurrent PostgreSQL data consumers
couch-hs library and program: A CouchDB view server for Haskell.
couch-simple library: A modern, lightweight, complete client for CouchDB
CouchDB library: CouchDB interface
couchdb-conduit library: Couch DB client library using http-conduit and aeson
couchdb-enumerator library: Couch DB client library using http-enumerator and aeson
cql library: Cassandra CQL binary protocol.
cql-io library: Cassandra CQL client.
CurryDB library and programs: CurryDB: In-memory Key/Value Database
cypher library: Haskell bindings for the neo4j "cypher" query language
database-migrate library: Database versioning and migration (experimental)
database-study library: Demonstrate how a database can be implemented the functional way
datalog library and program: An implementation of datalog in Haskell
dawdle library and program: Generates DDL suggestions based on a CSV file
dbcleaner library: Clean database tables automatically around hspec tests
dbf library: Read and write XBase ".dbf" files
DBlimited program: A command-line SQL interface for flat files (tdf,csv,etc.)
dbmigrations library and program: An implementation of relational database "migrations"
direct-sqlite library: Low-level binding to SQLite3. Includes UTF8 and BLOB support.
drifter library: Simple schema management for arbitrary databases.
drifter-postgresql library: PostgreSQL support for the drifter schema migration tool
DSH library and program: Database Supported Haskell
dsh-sql library and program: SQL backend for Database Supported Haskell (DSH)
edis library: Statically typechecked client for Redis
erd program: An entity-relationship diagram generator from a plain text description.
esqueleto library: Type-safe EDSL for SQL queries on persistent backends.
eventstore library: EventStore TCP Client
ez-couch library: A high level static library for working with CouchDB
FerryCore library: Ferry Core Components
genders library: Bindings to libgenders.
geoip2 library: Pure haskell interface to MaxMind GeoIP database
gitson library: A document store library for Git + JSON.
gremlin-haskell library and program: Graph database client for TinkerPop3 Gremlin Server
gridfs library: GridFS (MongoDB file storage) implementation
groundhog library: Type-safe datatype-database mapping library.
groundhog-converters library: Extended Converter Library for groundhog embedded types
groundhog-inspector library and program: Type-safe datatype-database mapping library.
groundhog-mysql library: MySQL backend for the groundhog library.
groundhog-postgresql library: PostgreSQL backend for the groundhog library.
groundhog-sqlite library: Sqlite3 backend for the groundhog library
groundhog-th library: Type-safe datatype-database mapping library.
HandlerSocketClient library: Haskell implementation of a HandlerSocket client (API).
haskell-neo4j-client library: A Haskell neo4j client
haskell-tyrant library: Haskell implementation of the Tokyo Tyrant binary protocol
haskelldb library: A library of combinators for generating and executing SQL statements.
haskelldb-connect-hdbc library: Bracketed HDBC session for HaskellDB
haskelldb-connect-hdbc-catchio-mtl library: Bracketed HaskellDB HDBC session using MonadCatchIO-mtl
haskelldb-connect-hdbc-catchio-tf library: Bracketed HaskellDB HDBC session using MonadCatchIO-transformers
haskelldb-connect-hdbc-catchio-transformers library: Bracketed HaskellDB HDBC session using MonadCatchIO-transformers
haskelldb-connect-hdbc-lifted library: Bracketed HaskellDB HDBC session using lifted-base
haskelldb-dynamic library and program: HaskellDB support for the dynamically loaded drivers.
haskelldb-flat library and program: An experimental HaskellDB back-end in pure Haskell (no SQL)
haskelldb-hdbc library: HaskellDB support for HDBC.
haskelldb-hdbc-mysql library and program: HaskellDB support for the HDBC MySQL driver.
haskelldb-hdbc-odbc library and program: HaskellDB support for the HDBC ODBC driver.
haskelldb-hdbc-postgresql library and program: HaskellDB support for the HDBC PostgreSQL driver.
haskelldb-hdbc-sqlite3 library and program: HaskellDB support for the HDBC SQLite driver.
haskelldb-hsql library: HaskellDB support for HSQL.
haskelldb-hsql-mysql library and program: HaskellDB support for the HSQL MySQL driver.
haskelldb-hsql-odbc library and program: HaskellDB support for the HSQL ODBC driver.
haskelldb-hsql-oracle library and program: HaskellDB support for the HSQL Oracle driver.
haskelldb-hsql-postgresql library and program: HaskellDB support for the HSQL PostgreSQL driver.
haskelldb-hsql-sqlite library and program: HaskellDB support for the HSQL SQLite driver.
haskelldb-hsql-sqlite3 library and program: HaskellDB support for the HSQL SQLite3 driver.
haskelldb-th library: Template Haskell utilities for HaskellDB.
haskelldb-wx library: HaskellDB support for WXHaskell.
HaskRel library: HaskRel, Haskell as a DBMS with support for the relational algebra
hasparql-client library: This package enables to write SPARQL queries to remote endpoints.
hasql library: A very efficient PostgreSQL driver and a flexible mapping API
hasql-backend library: API for backends of "hasql"
hasql-optparse-applicative library: "optparse-applicative" parsers for "hasql"
hasql-pool library: A pool of connections for Hasql
hasql-postgres library: A "PostgreSQL" backend for the "hasql" library
hasql-postgres-options library: An "optparse-applicative" parser for "hasql-postgres"
hasql-th library: Template Haskell utilities for Hasql
hasql-transaction library: A composable abstraction over the retryable transactions for Hasql
HDBC library and program: Haskell Database Connectivity
hdbc-aeson library: Deserialize from HDBC rows to FromJSON instances
HDBC-mysql library: MySQL driver for HDBC
HDBC-odbc library and programs: ODBC driver for HDBC
HDBC-postgresql library and program: PostgreSQL driver for HDBC
HDBC-postgresql-hstore library: Manipulate data in PostgreSQL "hstore" columns.
hdbc-postgresql-hstore library: Manipulate data in PostgreSQL "hstore" columns.
HDBC-session library: Bracketed connection for HDBC
HDBC-sqlite3 library and program: Sqlite v3 driver for HDBC
hdbc-tuple library: Type save tuples for HDBC
hdbi library: Haskell Database Independent interface
hdbi-conduit library: Conduit glue for HDBI
hdbi-postgresql library: PostgreSQL driver for hdbi
hdbi-sqlite library: SQlite driver for HDBI
hedis library: Client library for the Redis datastore: supports full command set, pipelining.
hedis-config library: Easy trivial configuration for Redis
hedis-monadic library: A la MonadReader for Redis connection
hedis-pile library: Caching mandatory data with Redis
hedis-simple library: A simplified API for hedis
hedis-tags library: Tags for hedis
hesql program: Haskell's embedded SQL
HGraphStorage library: Graph database stored on disk
higher-leveldb library: A rich monadic API for working with leveldb databases.
hmemdb library: In-memory relational database
HongoDB library: A Simple Key Value Store
hpqtypes library and program: Haskell bindings to libpqtypes
hRESP library: haskell implementation of RESP (REdis Serialization Protocol).
hs-cdb library: A library for reading CDB (Constant Database) files.
hscassandra library: cassandra database interface
hSimpleDB library: Interface to Amazon's SimpleDB service.
hsparql library: A SPARQL query generator and DSL, and a client to query a SPARQL server.
hsql library: Database access from Haskell.
hsql-mysql library: MySQL driver for HSQL.
hsql-odbc library: A Haskell Interface to ODBC.
hsql-postgresql library: A Haskell Interface to PostgreSQL via the PQ library.
hsql-sqlite3 library: SQLite3 driver for HSQL.
hsSqlite3 library: Sqlite3 bindings
hssqlppp library: SQL parser and type checker
hssqlppp-th library: hssqlppp extras which need template-haskell
hypher library: A Haskell neo4j client
hzk library: Haskell client library for Apache Zookeeper
influxdb library and program: Haskell client library for InfluxDB
io-storage library: A key-value store in the IO monad.
json-state library: Keep program state in JSON files.
json2-hdbc library: Support JSON for SQL Database.
JunkDB library
JunkDB-driver-gdbm library
JunkDB-driver-hashtables library
keyvaluehash library: Pure Haskell key/value store implementation
KyotoCabinet library: Kyoto Cabinet DB bindings
kyotocabinet library: Mid level bindings to Kyoto Cabinet
language-sqlite library: Full parser and generator for SQL as implemented by SQLite3
leveldb-haskell library and programs: Haskell bindings to LevelDB
leveldb-haskell-fork library and programs: Haskell bindings to LevelDB
libinfluxdb library: libinfluxdb
libpq library: libpq binding for Haskell
lmdb library: Lightning MDB bindings
memcache library: A memcached client library.
memcached-binary library: memcached client using binary protocol.
memo-sqlite library: memoize functions using SQLite3 database
MetaHDBC library: Statically checked database access
monarch library: Monadic interface for TokyoTyrant.
mongoDB library: Driver (client) for MongoDB, a free, scalable, fast, document DBMS
mongodb-queue library: message queue using MongoDB
muesli library: A simple document-oriented database
mysql library: A low-level MySQL client library.
mysql-effect library: An extensible mysql effect using extensible-effects and mysql-simple
mysql-simple library: A mid-level MySQL client library.
mysql-simple-quasi library: Quasi-quoter for use with mysql-simple.
mysql-simple-typed library: Typed extension to mysql simple
narc library: Query SQL databases using Nested Relational Calculus embedded in Haskell.
Neks library and programs: Simple networked key/value store
opaleye library: An SQL-generating DSL targeting PostgreSQL
opaleye-classy library: Opaleye wrapped up in classy MTL attire.
opaleye-sqlite library: An SQL-generating DSL targeting SQLite
opaleye-trans library and programs: A monad transformer for Opaleye
orchestrate library: An API client for http://orchestrate.io/.
OrchestrateDB library: Unofficial Haskell Client Library for the Orchestrate.io API
Pathfinder library: Relational optimiser and code generator
PCLT-DB library: An addon to PCLT package: enchance PCLT catalog with PostgreSQL powers.
perdure library and program: Robust persistence for acyclic immutable data
persist2er program: Transforms persist's quasi-quoted syntax into ER format
persistable-record library: Binding between SQL database values and haskell records.
persistable-types-HDBC-pg library: HDBC and Relational-Record instances of PostgreSQL extended types
persistent library: Type-safe, multi-backend data serialization.
persistent-audit library and program: Parses a Persist Model file and produces Audit Models
persistent-cereal library: Helper functions for writing Persistent instances
persistent-database-url library: Parse DATABASE_URL into configuration types for Persistent
persistent-hssqlppp library: Declare Persistent entities using SQL SELECT query syntax
persistent-instances-iproute library: Persistent instances for types in iproute
persistent-iproute library: Persistent instances for types in iproute
persistent-mongoDB library: Backend for the persistent library using mongoDB.
persistent-mysql library: Backend for the persistent library using MySQL database server.
persistent-odbc library and program: Backend for the persistent library using ODBC
persistent-postgresql library: Backend for the persistent library using postgresql.
persistent-protobuf library: Template-Haskell helpers for integrating protobufs with persistent.
persistent-ratelimit library: A library for rate limiting activities with a persistent backend.
persistent-redis library: Backend for persistent library using Redis.
persistent-sqlite library and program: Backend for the persistent library using sqlite3.
persistent-template library: Type-safe, non-relational, multi-backend persistence.
persistent-zookeeper library: Backend for persistent library using Zookeeper.
pg-store library: Dead simple storage interface to PostgreSQL
pgsql-simple library: A mid-level PostgreSQL client library.
pipes-mongodb library: Stream results from MongoDB
pipes-postgresql-simple library: Convert various postgresql-simple calls to work with pipes
pipes-sqlite-simple library: Functions that smash Pipes and sqlite-simple together
plist-buddy library: Remote monad for editing plists
pool library: Thread-safe resource pools. (deprecated)
pool-conduit library: Resource pool allocations via ResourceT. (deprecated)
PostgreSQL library: Thin wrapper over the C postgresql library
postgresql-binary library: Encoders and decoders for the PostgreSQL's binary format
postgresql-config library: Types for easy adding postgresql configuration to your program
postgresql-cube library: Cube support for postgresql-simple
postgresql-error-codes library: PostgreSQL error codes
postgresql-libpq library: low-level binding to libpq
postgresql-orm library and program: An ORM (Object Relational Mapping) and migrations DSL for PostgreSQL.
postgresql-query library: Sql interpolating quasiquote plus some kind of primitive ORM using it
postgresql-schema library and programs: PostgreSQL Schema Management
postgresql-simple library: Mid-Level PostgreSQL client library
postgresql-simple-migration library and program: PostgreSQL Schema Migrations
postgresql-simple-typed library: Typed extension for PostgreSQL simple
postgresql-transactional library: a transactional monad on top of postgresql-simple
postgresql-typed library: A PostgreSQL access library with compile-time SQL type inference
presto-hdbc library: An HDBC connector for Presto
pure-cdb library: Another pure-haskell CDB (Constant Database) implementation
qudb program: Quite Useless DB
redis library: A driver for Redis key-value database
redis-hs library: A simple Redis library for Haskell
redis-io library: Yet another redis client.
redis-simple library: Simple redis bindings for Haskell
RefSerialize library: Write to and read from ByteStrings maintaining internal memory references
relational-postgresql8 library: PostgreSQL v8.x driver for haskell-relational-record
relational-query library: Typeful, Modular, Relational, algebraic query engine
relational-query-HDBC library: HDBC instance of relational-query and typed query interface for HDBC
relational-record library: Meta package of Relational Record
relational-record-examples program: Examples of Haskell Relationa Record
relational-schemas library: RDBMSs' schema templates for relational-query
resource-pool library: A high-performance striped resource pooling implementation
resource-pool-catchio library: Fork of resource-pool, with a MonadCatchIO constraint
rethinkdb library and program: A driver for RethinkDB 2.2
rethinkdb-client-driver library: Client driver for RethinkDB
rethinkdb-model library: Useful tools for modeling data with rethinkdb
rethinkdb-wereHamster library: RethinkDB driver for Haskell
rocksdb-haskell library: Haskell bindings to RocksDB
sednaDBXML library: Sedna C API XML Binding
servant-postgresql library: Useful functions and instances for using servant with a PostgreSQL context
shake-extras library: Extra utilities for shake build systems
shapefile library: Parser and related tools for ESRI shapefile format
simple-sql-parser library and program: A parser for SQL queries
simplest-sqlite library: Simplest SQLite3 binding
sirkel library: Sirkel, a Chord DHT
snaplet-riak library: A Snaplet for the Riak database
snaplet-sedna library: Snaplet for Sedna Bindings. Essentailly a rip of snaplet-hdbc.
sophia library: Bindings to Sophia library
sphinx library: Haskell bindings to the Sphinx full-text searching daemon.
sphinx-cli program: Sphinx CLI and demo of Haskell Sphinx library
sql-simple library: common middle-level sql client.
sql-simple-mysql library: mysql backend for sql-simple
sql-simple-pool library: conection pool for sql-simple
sql-simple-postgresql library: postgresql backend for sql-simple
sql-simple-sqlite library: sqlite backend for sql-simple
sql-words library: Simple idea SQL keywords data constructor into OverloadedString
SQLDeps library: Calculate db-data dependencies of functions
sqlite library: Haskell binding to sqlite3
sqlite-simple library: Mid-Level SQLite client library
sqlite-simple-typed library: Typed extension to sqlite simple
sqlvalue-list library: Class and instances for conversion to list of SqlValue.
structured-mongoDB library: Structured MongoDB interface
Sysmon library: Sybase 15 sysmon reports processor
ta library: Transito Abierto: convenience library when using Takusen and Oracle.
TableAlgebra library: Ferry Table Algebra
Tables program: A client for Quill databases
tablestorage library: Azure Table Storage REST API Wrapper
Takusen programs: Database library with left-fold interface, for PostgreSQL, Oracle, SQLite, ODBC.
takusen-oracle library and programs: Database library with left-fold interface for Oracle.
TCache library: A Transactional cache with user-defined persistence
tcache-AWS library: tcache using Amazon Web Services as default persistence mechanism
tccli program: TokyoCabinet CLI interface
templatepg library: A PostgreSQL access library with compile-time SQL type inference
tempodb library: A small Haskell wrapper around the TempoDB api.
text-postgresql library: Parser and Printer of PostgreSQL extended types
tokyocabinet-haskell library: Haskell binding of Tokyo Cabinet
tokyotyrant-haskell library: FFI bindings to libtokyotyrant
tripLL library: A very simple triple store
tx library: Persistent transactions on top of STM.
txt-sushi library and programs: The SQL link in your *NIX chain
typedquery library: Parser for SQL augmented with types
vcache library: semi-transparent persistence for Haskell using LMDB, STM
vcache-trie library: patricia tries modeled above VCache
wai-middleware-cache-redis library: Redis backend for wai-middleware-cache
wheb-mongo library: MongoDB plugin for Wheb
yeshql library: YesQL-style SQL database abstraction
yesod-persistent library: Some helpers for using Persistent from Yesod.
yesod-session-redis library: Redis-Powered Sessions for Haskell
yxdb-utils library and programs: Utilities for reading and writing Alteryx .yxdb files

Database Design

ampersand program: Toolsuite for automated design of business processes.

Database Testing Web

pg-harness library and program: REST service and library for creating/consuming temporary PostgreSQL databases
pg-harness-client library: Client library for pg-harness-server
pg-harness-server program: REST service for creating temporary PostgreSQL databases

Databases

juandelacosa program: Manage users in MariaDB >= 10.1.1

Datamining

HasGP library: A Haskell library for inference using Gaussian processes
hslibsvm library: A FFI binding to libsvm.
HSvm library: Haskell Bindings for libsvm

Date

discordian-calendar library: library for handling Discordian calendar dates

Debian

cabal-debian library and program: Create a Debianization for a Cabal package
debian library and programs: Modules for working with the Debian package system
debian-build library and program: Debian package build sequence tools
dpkg library: libdpkg bindings

Debug

ap-reflect library: Partial evaluation reflection a la simple-reflect.
asn1dump program: Dump ASN1 structure
bytedump library and program: Flexible byte dump helpers for human readers.
DataTreeView library: A GTK widget for displaying arbitrary Data.Data.Data instances
debug-diff library: Display a colorized diff between two Haskell values
debug-time library: Debug.Trace equivalent for timing computations
DebugTraceHelpers library: Convenience functions and instances for Debug.Trace
ghc-datasize library: Determine the size of data structures in GHC's memory
ghc-dup library: Explicitly prevent sharing
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC
ghc-heap-view library: Extract the heap representation of Haskell values and thunks
ghc-vis library: Live visualization of data structures in GHCi
GHood library: A graphical viewer for Hood
Hoed library and programs: Lightweight algorithmic debugging.
hood library: Debugging by observing in place
hood-off library: Dummy package to disable Hood without having to remove all the calls to observe
hood2 library: Debugging by observing in place
hpc-strobe library: Hpc-generated strobes for a running Haskell program
htrace library: Hierarchical tracing for debugging of lazy evaluation
jdi library and program: Implementation of Java Debug Interface
KiCS-debugger library and program: debug features for kics
KiCS-prophecy library and program: a transformation used by the kics debugger
linux-perf library and programs: Read files generated by perf on Linux
nonfree library: Free structures sans laws
print-debugger library: Debug print formatting library.
remote-debugger program: Interface to ghci debugger
repr-tree-syb library: Tree representation and pretty-printing of data structures based on SYB
simple-reflect library: Simple reflection of expressions containing variables
trace-call library: functions for logging the arguments and results of function calls
trace-function-call library: Easy lightweight tracing of function arguments and results for ad hoc debugging
traced library: Simple evaluation trace
tracer library: Tracing utilities for Functor/Applicative/Monad types
vacuum library: Graph representation of the GHC heap
vacuum-graphviz library: A library for transforming vacuum graphs into GraphViz output

Demo

bowntz program: audio-visual pseudo-physical simulation of colliding circles
gearbox program: zooming rotating fractal gears graphics demo
lame-tester library: A strange and unnecessary selective test-running library
pathfindingcore library: A toy pathfinding library
Pup-Events-Demo programs: A networked event handling framework for hooking into other programs.
snowglobe program: randomized fractal snowflakes demo
wedged program: Wedged postcard generator.

Dependent Types

Agda library and programs: A dependently typed functional programming language and proof assistant
Agda-executable program: Command-line program for type-checking and compiling Agda programs
agda-server program: Http server for Agda (prototype)
agda-snippets library and program: Render just the Agda snippets of a literate Agda file to HTML
agda-snippets-hakyll library: Literate Agda support using agda-snippets, for Hakyll pages.
compare-type library: compare types of any kinds in haskell
cubical program: Implementation of Univalence in Cubical Sets
dependent-map library: Dependent finite maps (partial dependent products)
dependent-sum library: Dependent sum type
hoq program: A language based on homotopy type theory with an interval type
idris library and programs: Functional Programming Language with Dependent Types
ivor library: Theorem proving library based on dependent type theory
MiniAgda program: A toy dependently typed programming language with type-based termination.
nanoAgda program: A toy dependently-typed language
open-typerep library: Open type representations and dynamic types
PandocAgda library and program: Pandoc support for literate Agda
pisigma library and program: A dependently typed core language
prim-uniq library: Opaque unique identifiers in primitive state monads
reflection library: Reifies arbitrary terms into types that can be reflected back into terms
show-type library: convert types into string values in haskell
singleton-nats library: Unary natural numbers relying on the singletons infrastructure.
singletons library: A framework for generating singleton types
type-fun library: Collection of widely reimplemented type families
type-level-bst library: type-level binary search trees in haskell
typeparams library: ...
uAgda program: A simplistic dependently-typed language with parametricity.

Derive-monoid

derive-monoid library and program: derive Semigroup/Monoid/IsList

Desktop

arbtt programs: Automatic Rule-Based Time Tracker
bustle programs: Draw sequence diagrams of D-Bus traffic
d-bus library and programs: Permissively licensed D-Bus client library
DBus library: D-Bus bindings
dbus library: A client library for the D-Bus IPC system.
dbus-client library: Monadic and object-oriented interfaces to DBus
dbus-core library: Low-level D-Bus protocol implementation
fdo-notify library: Desktop Notifications client
fdo-trash library and program: Utilities related to freedesktop Trash standard.
git-checklist program: Maintain per-branch checklists in Git
gnome-keyring library: Bindings for libgnome-keyring
libnotify library: Bindings to libnotify library
todos library and program: Easy-to-use TODOs manager.
tracker library: Client library for Tracker metadata database, indexer and search tool
wacom-daemon library and programs: Manage Wacom tablet settings profiles, including Intuos Pro ring modes
workflow-osx library and program: a "Desktop Workflow" monad with Objective-C bindings

Desktop Environment

manatee library and program: The Haskell/Gtk+ Integrated Live Environment
manatee-all library and program: Virtual package to install all Manatee packages.
manatee-anything library and program: Multithread interactive input/search framework for Manatee
manatee-core library: The core of Manatee.

Development

addLicenseInfo program: Adds license info to the top of a file.
ag-pictgen program: Attribute Grammar picture generation
air library: air
air-extra library: air-extra
air-spec library: air spec helper
air-th library: air
alex program: Alex is a tool for generating lexical analysers in Haskell
alex-meta library: Quasi-quoter for Alex lexers
AlgorithmW program: Example implementation of Algorithm W for Hindley-Milner type inference.
anansi library and program: Simple literate programming preprocessor
anansi-hscolour library: Colorized looms for Anansi
anansi-pandoc library: Looms which use Pandoc to parse and produce a variety of formats.
anatomy library and program: Anatomy: Atomo documentation system
AndroidViewHierarchyImporter program: Android view hierarchy importer
apply-refact library and program: Perform refactorings specified by the refact library.
argon program: Measure your code's complexity
arrowp program: preprocessor translating arrow notation into Haskell 98
AspectAG library: Attribute Grammars in the form of an EDSL
assembler library and program: Haskell Assembler
Aurochs program: Yet another parser generator for C/C++
avr-shake library: AVR Crosspack actions for shake build systems.
azurify library and program: A simple library for accessing Azure blob storage
b9 library and program: A tool and library for building virtual machine images.
bake library and program: Continuous integration system
base-noprelude library: "base" package sans "Prelude" module
basic-lens library: Basic lens type and functions
bf-cata library
BigPixel program: Image editor for pixel art
bindings-bfd library: Bindings for libbfd, a library of the GNU `binutils'
BirdPP program: A preprocessor for Bird-style Literate Haskell comments with Haddock markup.
bliplib library: Support code for Blip.
BNFC library and program: A compiler front-end generator.
BNFC-meta library: Deriving Parsers and Quasi-Quoters from BNF Grammars
borel library: Metering System for OpenStack metrics provided by Vaultaire.
botpp library and program: Build tool for Lambdabot
bson-lens library: BSON lenses
buildbox library: Rehackable components for writing buildbots and test harnesses.
buildbox-tools program: Tools for working with buildbox benchmark result files.
buildwrapper library and program: A library and an executable that provide an easy API for a Haskell IDE
bumper program: Automatically bump package versions, also transitively.
c2hs programs: C->Haskell FFI tool that gives some cross-language type safety
c2hsc program: Convert C API header files to .hsc and .hsc.helper.c files
cabal-bounds library and program: ...
cabal-cargs library and program: A command line program for extracting compiler arguments from a cabal file.
cabal-constraints program: Repeatable builds for cabalized Haskell projects.
cabal-dev programs: Manage sandboxed Haskell build environments
cabal-file-th library: Template Haskell expressions for reading fields from a project's cabal file.
cabal-ghc-dynflags library: Conveniently configure GHC's dynamic flags for use with Cabal projects
cabal-ghci library and program: Set up ghci with options taken from a .cabal file
cabal-graphdeps program: Generate graphs of install-time Cabal dependencies
cabal-info library and program: Read information from cabal files
cabal-lenses library: Lenses and traversals for the Cabal library.
cabal-meta library and program: build multiple packages at once
cabal-mon program: A monitor for cabal builds
cabal-scripts library: Shell scripts for support of Cabal maintenance
cabal-sign program: Sign and verify Cabal packages.
cabal2ghci program: A tool to generate .ghci file from .cabal
cabalQuery library and program: A simple tool to query cabal files.
cached-io library and program: A simple library to cache a single IO action with timeout
cairo-appbase program: A template for building new GUI applications using GTK and Cairo.
cake library and program: A build-system library and driver
cake3 library and programs: Third cake the Makefile EDSL
canteven-listen-http library: data types to describe HTTP services
canteven-log library: A canteven way of setting up logging for your program.
castle program: A tool to manage shared cabal-install sandboxes.
catamorphism library: A package exposing a helper function for generating catamorphisms.
CCA library and program: preprocessor and library for Causal Commutative Arrows (CCA)
ceilometer-common library: Common Haskell types and encoding for OpenStack Ceilometer
cerberus library and program: Protect and control API access with cerberus
cgen library and programs: generates Haskell bindings and C wrappers for C++ libraries
change-monger library and program: Parse VCS changelogs into ChangeLogs
clone-all program: Clone all github repositories from a given user
Coadjute library: A generic build tool
codex library and program: A ctags file generator for cabal project dependencies.
colorize-haskell library and program: Highligt Haskell source
Commando library and program: Watch some files; Rerun a command
Contract library: Practical typed lazy contracts.
cookbook library: Tiered general-purpose libraries with domain-specific applications.
coordinate library: A representation of latitude and longitude
court programs: Simple and flexible CI system
cpphs library and program: A liberalised re-implementation of cpp, the C pre-processor.
criterion library and program: Robust, reliable performance measurement and analysis
criterion-to-html program: Convert criterion output to HTML reports
crunghc program: A runghc replacement with transparent caching
csv-nptools programs: A collection of CSV tools
darcs program: a distributed, interactive, smart revision control system
darcs-beta programs: a distributed, interactive, smart revision control system
darcs-cabalized program: David's Advanced Version Control System
darcs-fastconvert program: Import/export git fast-import streams to/from darcs.
darcs-scripts library: Shell scripts for support of darcs workflow
darcs2dot program: Outputs dependencies of darcs patches in dot format.
darcsden programs: Darcs repository UI and hosting/collaboration app (hub.darcs.net branch).
data-structure-inferrer program: Program that infers the fastest data structure available for your program
data-util library: utilities for handle data
DataTreeView library: A GTK widget for displaying arbitrary Data.Data.Data instances
dbus-th-introspection library and program: Generate bindings for DBus calls by using DBus introspection and dbus-th
dead-code-detection program: detect dead code in haskell projects
delimiter-separated library: Library for dealing with tab and/or comma (or other) separated files
derive library and program: A program and library to derive instances for data types
derive-gadt library and programs: Instance deriving for (a subset of) GADTs.
derive-topdown library: ...
dictionary-sharing library: Sharing/memoization of class members
diet library: Discrete Interval Encoding Tree
disassembler library: Disassembler for X86 & AMD64 machine code
dockercook library and program: A build tool for multiple docker image layers
DPM library and programs: Darcs Patch Manager
dump library: Dumps the names and values of expressions to ease debugging.
dwarfadt library and programs: High-level wrapper around the dwarf library
dyre library: Dynamic reconfiguration in Haskell
edentv program: A Tool to Visualize Parallel Functional Program Executions
elm-init program: Set up basic structure for an elm project
erd program: An entity-relationship diagram generator from a plain text description.
error-analyze library: Parse ghc and cabal error messages and give their causes for easier resolution
error-location library: error functions that show file location information
error-message library: Composable error messages.
extra library: Extra functions I use.
extract-dependencies library and program: Given a hackage package outputs the list of its dependencies.
extractelf program: Extract an ELF's metadata and sections into files
fail library: Forward-compatible MonadFail class
fast-tags library and program: Fast incremental vi and emacs tags.
fay library and programs: A compiler for Fay, a Haskell subset that compiles to JavaScript.
fay-base library: The base package for Fay.
file-location library: common functions that show file location information
file-modules library and program: Takes a Haskell source-code file and outputs its modules.
filepath-io-access library: IO Access for filepath
firstify library and program: Defunctionalisation for Yhc Core
flamingra library and program: FlameGraphs of profiling
flexible-unlit library and program: A configurable reimplementation of unlit
flo library and program: Generate flow charts from your code base.
foreign-store library: Store a stable pointer in a foreign context to be retrieved later.
fpco-api library and program: Simple interface to the FP Complete IDE API.
fresco-binding library: Fresco binding for Haskell
fugue library: A recapitulated prelude with minimal dependencies and profligate exports.
geodetic library: Geodetic calculations
ghc-core program: Display GHC's core and assembly output in a pager
ghc-core-html program: Core to HTML display
ghc-datasize library: Determine the size of data structures in GHC's memory
ghc-dump-tree library and program: Dump GHC's parsed, renamed, and type checked ASTs
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-events-analyze program: Analyze and visualize event logs
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC
ghc-exactprint programs: ExactPrint for GHC
ghc-gc-tune program: Graph performance of Haskell programs with different GC flags
ghc-generic-instances library: Derived instances of GHC.Generic of the GHC AST
ghc-imported-from library and programs: Find the Haddock documentation for a symbol.
ghc-make program: Accelerated version of ghc --make
ghc-man-completion program: Generate a bash completion from the GHC manpage
ghc-mod library and programs: Happy Haskell Programming
ghc-mtl library: An mtl compatible version of the Ghc-Api monads and monad-transformers.
ghc-parmake library and program: A parallel wrapper for 'ghc --make'.
ghc-paths library: Knowledge of GHC's installation directories
ghc-pkg-autofix program: Simple utility to fix BROKEN package dependencies for cabal-install.
ghc-pkg-lib library: Provide library support for ghc-pkg information
ghc-simple library: Simplified interface to the GHC API.
ghc-syb library: Data and Typeable instances for the GHC API.
ghc-syb-utils library: Scrap Your Boilerplate utilities for the GHC API.
ghc-time-alloc-prof library and program: Library for parsing GHC time and allocation profiling reports
ghc-vis library: Live visualization of data structures in GHCi
ghci-ng program: Next generation GHCi
ghci-pretty library: colored pretty-printing within ghci
ghcid library and program: GHCi based bare bones IDE
ghczdecode program: Decode Z-encoded strings from GHC
ght library and program: Trivial routines for inspecting git repositories
gipeda program: Git Performance Dashboard
git-all program: Determine which Git repositories need actions to be taken
git-checklist program: Maintain per-branch checklists in Git
git-fmt program: Custom git command for formatting code.
git-gpush program: More intelligent push-to-GitHub utility.
git-jump program: Move a git branch
git-monitor program: Passively snapshots working tree changes efficiently.
git-sanity library and program: A sanity checker for your git history.
git-vogue library and programs: A framework for pre-commit checks.
gitHUD library and program: More efficient replacement to the great git-radar
gitignore program: Apply GitHub .gitignore templates to already existing repositories.
gitrev library: Compile git revision info into Haskell projects
graph-visit library: Graph walk abstraction
graphmod program: Present the module dependencies of a program as a "dot" graph.
grasp library and program: GRASP implementation for the AMMM project.
greencard-lib library: A foreign function interface pre-processor library for Haskell
grm library and program: grm grammar converter
gtk2hs-buildtools programs: Tools to build the Gtk2Hs suite of User Interface libraries.
guess-combinator library: Generate simple combinators given their type
GuiHaskell program: A graphical REPL and development environment for Haskell
hackage-proxy program: Provide a proxy for Hackage which modifies responses in some way. (deprecated)
hackmanager library and program: Generate useful files for Haskell projects
haddock-leksah program: A documentation-generation tool for Haskell libraries
hake library and program: make tool. ruby : rake = haskell : hake
halberd library and program: A tool to generate missing import statements for Haskell modules.
halive library and program: A live recompiler
haltavista program: looks for functions given a set of example input/outputs
hannahci program: Simple Continuous Integration/Deployment System
happraise program: A small program for counting the comments in haskell source
happy program: Happy is a parser generator for Haskell
happy-meta library: Quasi-quoter for Happy parsers
happybara library: Acceptance test framework for web applications
happybara-webkit library: WebKit Happybara driver
happybara-webkit-server library: WebKit Server binary for Happybara (taken from capybara-webkit)
HaRe program: the Haskell Refactorer.
harmony library and program: A web service specification compiler that generates implementation and tests.
haskdogs program: Generate tags file for Haskell project and its nearest deps
haskell-docs library and program: A program to find and display the docs and type of a name
haskell-formatter library and program: Haskell source code formatter
haskell-gi program: Generate Haskell bindings for GObject Introspection capable libraries
haskell-gi-base library: Foundation for libraries generated by haskell-gi
haskell-import-graph library and program: create haskell import graph for graphviz
haskell-token-utils library: Utilities to tie up tokens to an AST
haskellscript program: Command line tool for running Haskell scripts with a hashbang.
hasktags library and program: Produces ctags "tags" and etags "TAGS" files for Haskell programs
hat library and programs: The Haskell tracer, generating and viewing Haskell execution traces
hayoo-cli program: Hayoo CLI
hbb program: Haskell Busy Bee, a backend for text editors.
hdevtools program: Persistent GHC powered background server for FAST haskell development tools
hdirect library and program: An IDL compiler for Haskell
hdocs library and program: Haskell docs tool
headergen program: Creates a header for a haskell source file.
hein program: An extensible build helper for haskell, in the vein of leiningen.
help-esb library: A Haskell client for the Help.com team's ESB.
hesh library and program: the Haskell Extensible Shell: Haskell for Bash-style scripts
hfd program: Flash debugger
hgdbmi library: GDB Machine Interface: program-driven control of GDB
hgrev library: Compile Mercurial (hg) version info into Haskell code
highWaterMark program: Memory usage statistics
hindent library and programs: Extensible Haskell pretty printer
hit library and program: Git operations in haskell
hit-graph library: Use graph algorithms to access and manipulate Git repos
hlint library and program: Source code suggestions
HListPP program: A preprocessor for HList labelable labels
hmk library and program: A make alternative based on Plan9's mk.
hmumps program: Interpreter for the MUMPS langugae
holy-project library and programs: Start your Haskell project with cabal, git and tests.
hoobuddy program: Simple tool for fetching and merging hoogle data
hoogle library and program: Haskell API Search
hothasktags program: Generates ctags for Haskell, incorporating import lists and qualified imports
houseman library and program: A Haskell implementation of Foreman
hp2any-core library: Heap profiling helper library
hp2any-graph programs: ...
hp2any-manager program: A utility to visualise and compare heap profiles.
hp2pretty program: generate pretty graphs from heap profiles
hpack library and program: An alternative format for Haskell packages
hpaco program: Modular template compiler
hpaco-lib library: Modular template compiler library
hpage program: A scrapbook for Haskell developers
hpp library and program: A Haskell pre-processor
hs-pkg-config library: Create pkg-config configuration files
Hs2lib library and programs: ...
hsb2hs program: Preprocesses a file, adding blobs from files as string literals.
hsbencher library: Launch and gather data from Haskell and non-Haskell benchmarks.
hsc2hs program: A preprocessor that helps with writing Haskell bindings to C code
hscurses-fish-ex program: hscurses swimming fish example
hsdev library and programs: Haskell development library and tool with support of autocompletion, ...
hsenv program: Virtual Haskell Environment builder
hsfcsh programs: Incremental builder for flash
hsfilt program: Z-decoder.
hsimport library and program: A command line program for extending the import list of a Haskell source file.
hslinks program: Resolves links to Haskell identifiers.
HSlippyMap library: OpenStreetMap Slippy Map
hspec-setup program: Add an hspec test-suite in one command
hssourceinfo programs: get haskell source code info
HsSVN library: Partial Subversion (SVN) binding for Haskell
hstyle program: Checks Haskell source code for style compliance.
hsubconvert program: One-time, faithful conversion of Subversion repositories to Git
htags program: A Haskell98 parsing tags program similar to ctags.
hub program: For multiplexing GHC installations and providing development sandboxes
hugs2yc library: Hugs Front-end to Yhc Core.
ide-backend library and program: An IDE backend library
ide-backend-common library: Shared library used be ide-backend and ide-backend-server
ide-backend-rts library: RTS for the IDE backend
ide-backend-server program: An IDE backend server
ihaskell library and program: A Haskell backend kernel for the IPython project.
ihaskell-aeson library: IHaskell display instances for Aeson
ihaskell-basic library: IHaskell display instances for basic types
ihaskell-blaze library: IHaskell display instances for blaze-html types
ihaskell-charts library: IHaskell display instances for charts types
ihaskell-diagrams library: IHaskell display instances for diagram types
ihaskell-display library: IHaskell display instances for basic types
ihaskell-hatex library: IHaskell display instances for hatex
ihaskell-inline-r library: Embed R quasiquotes and plots in IHaskell notebooks.
ihaskell-juicypixels library: IHaskell - IHaskellDisplay instances of the image types of the JuicyPixels package.
ihaskell-magic library: IHaskell display instances for bytestrings
ihaskell-parsec library: IHaskell display instances for Parsec
ihaskell-plot library: IHaskell display instance for Plot (from plot package)
ihaskell-rlangqq library: a rDisp quasiquote to show plots from Rlang-QQ in IHaskell
ImperativeHaskell library: A library for writing Imperative style haskell.
imports library: Generate code for importing directories automatically
include-file library: Inclusion of files in executables at compile-time.
infer-upstream program: Find the repository from where a given repo was forked
interlude library: Replaces some Prelude functions for enhanced error reporting
ipatch program: interactive patch editor
ipython-kernel library and programs: A library for creating kernels for IPython frontends
iridium library and program: Automated Testing and Package Uploading
itanium-abi library: An implementation of name mangling/demangling for the Itanium ABI
ja-base-extra library: Extra functions I require in base
jarfind library and program: Tool for searching java classes, members and fields in classfiles and JAR archives
java-character library: Functions to simulate Java's Character class.
javasf program: A utility to print the SourceFile attribute of one or more Java class files.
javav program: A utility to print the target version of Java class files.
kansas-lava-shake library: Shake rules for building Kansas Lava projects
kdesrc-build-extra program: Build profiles for kdesrc-build
keera-hails-i18n library: Rapid Gtk Application Development - I18N
keera-hails-mvc-controller library: Haskell on Gtk rails - Gtk-based controller for MVC applications
keera-hails-mvc-environment-gtk library: Haskell on Gtk rails - Gtk-based global environment for MVC applications
keera-hails-mvc-model-lightmodel library: Rapid Gtk Application Development - Reactive Protected Light Models
keera-hails-mvc-model-protectedmodel library: Rapid Gtk Application Development - Protected Reactive Models
keera-hails-mvc-solutions-config library: Haskell on Gtk rails - Easy handling of configuration files
keera-hails-mvc-solutions-gtk library: Haskell on Gtk rails - Common solutions to recurrent problems in Gtk applications
keera-hails-mvc-view library: Haskell on Gtk rails - Generic View for MVC applications
keera-hails-mvc-view-gtk library: Haskell on Gtk rails - Gtk-based View for MVC applications
keera-hails-reactive-fs library: Haskell on Rails - Files as Reactive Values
keera-hails-reactive-gtk library: Haskell on Gtk rails - Reactive Fields for Gtk widgets
keera-hails-reactive-network library: Haskell on Rails - Sockets as Reactive Values
keera-hails-reactive-polling library: Haskell on Rails - Polling based Readable RVs
keera-hails-reactive-wx library: Haskell on Rails - Reactive Fields for WX widgets
keera-hails-reactive-yampa library: Haskell on Rails - FRP Yampa Signal Functions as RVs
keera-hails-reactivelenses library: Reactive Haskell on Rails - Lenses applied to Reactive Values
keera-hails-reactivevalues library: Haskell on Rails - Reactive Values
keiretsu program: Multi-process orchestration for development and integration testing
kit program: A dependency manager for Xcode (Objective-C) projects
lambdabot program: Lambdabot is a development tool and advanced IRC bot
lambdabot-core library: Lambdabot core functionality
lambdabot-haskell-plugins library: Lambdabot Haskell plugins
lambdabot-irc-plugins library: IRC plugins for lambdabot.
lambdabot-misc-plugins library: Lambdabot miscellaneous plugins
lambdabot-novelty-plugins library: Novelty plugins for Lambdabot
lambdabot-reference-plugins library: Lambdabot reference plugins.
lambdabot-social-plugins library: Social plugins for Lambdabot
lambdabot-trusted library: Lambdabot trusted code.
lambdabot-utils library: Utility libraries for the advanced IRC bot, Lambdabot
Lambdajudge library: A library to easily host Haskell based programming competitions
lambdiff program: Diff Viewer
Lastik library: A library for compiling programs in a variety of languages
LazyVault program: A simple sandboxing tool for Haskell packages.
leksah library and programs: Haskell IDE written in Haskell
lentil program: frugal issue tracker
lhs2html program: Compile lhs in bird style to md, html, hs.
lhs2tex program: Preprocessor for typesetting Haskell sources with LaTeX
lhs2TeX-hl program: Literate highlighter preprocessor for lhs2tex
libgit library: Simple Git Wrapper
libhbb library and program: Backend for text editors to provide better Haskell editing support.
linearscan library: Linear scan register allocator, formally verified in Coq
linearscan-hoopl library: Makes it easy to use the linearscan register allocator with Hoopl
linux-perf library and programs: Read files generated by perf on Linux
liquidhaskell-cabal library: Liquid Haskell integration for Cabal and stack
liquidhaskell-cabal-demo library and program: Demo of Liquid Haskell integration for Cabal and stack
lit program: A simple tool for literate programming
llvm-analysis library: A Haskell library for analyzing LLVM bitcode
llvm-tools library and programs: Useful tools built on llvm-analysis
located-base library: Location-aware variants of partial functions
loch library and program: Support for precise error locations in source files
loch-th library: Support for precise error locations in source files (Template Haskell version)
logict-state library: Library for logic programming based on haskell package logict
lushtags program: Create ctags compatible tags files for Haskell programs
macosx-make-standalone program: Make a macosx app standalone deployable
make-package program: Make a cabalized package
makedo library: Helper for writing redo scripts in Haskell
markdown-unlit library and program: Literate Haskell support for Markdown
marmalade-upload library and programs: Upload packages to Marmalade
MASMGen library: Generate MASM code from haskell
maybench library and programs: Automated benchmarking tool
MetaObject library: A meta-object system for Haskell based on Perl 6
microbench library: Microbenchmark Haskell code
MissingK library: Useful types and definitions missing from other libraries
module-management library and program: Clean up module imports, split and merge modules
monad-log library: A simple and fast logging monad
monadtransform library: A type-class for transforming monads (homomorphism) in a transformer
mps library: simply oo
mueval library and programs: Safely evaluate pure Haskell expressions
multi-cabal library and program: A tool supporting multi cabal project builds.
murder library: MUtually Recursive Definitions Explicitly Represented
mustache library and program: A mustache template parser library.
names-th library: Manipulate name strings for TH
neil program: General tools for Neil
nm library and program: Network Manager, binding to libnm-glib.
nofib-analyse program: Parse and compare nofib runs
nofib-analyze program: Parse and compare nofib runs
NoSlow programs: Microbenchmarks for various array libraries
NoTrace library: Remove all the functions come from Debug.Trace after debugging
nptools programs: A collection of random tools
nsis library: DSL for producing Windows Installer using NSIS.
nyan program: Bored? Nyan cat!
old-version library: Basic versioning library.
omnifmt library and program: A pretty-printer wrapper to faciliate ease of formatting during development.
open-haddock program: Open haddock HTML documentation
optional library: Using type-classes for optional function arguments
organize-imports program: Organize scala imports
OrPatterns library: A quasiquoter for or-patterns
package-o-tron library and programs: Utilities for working with cabal packages and your package database
package-vt program: Haskell Package Versioning Tool
pandoc-unlit program: Literate Haskell support for GitHub's Markdown flavor
parser-helper program: Prints Haskell parse trees in JSON.
PartialTypeSignatures library: emulate partial type signatures with template haskell
pcap-conduit library: Conduit <-> libpcap
pdynload library: pdynload is polymorphic dynamic linking library.
phoityne program: ghci debug viewer with simple editor.
phoityne-vscode program: ghci debug viewer on Visual Studio Code
pinch library: An alternative implementation of Thrift for Haskell.
pinchot library and program: Write grammars, not parsers
pisigma library and program: A dependently typed core language
pkggraph program: Package dependency graph for installed packages
placeholders library: Placeholders for use while developing Haskell code
pointful library and program: Pointful refactoring tool
porter library: Implementation of the Porter stemming algorithm
present library: Make presentations for data types.
prof2dot program: Convert GHC profiles into GraphViz's dot format
prof2pretty programs: generate pretty source from time/allocation profiles
profiteur program: Treemap visualiser for GHC prof files
progression library: Automates the recording and graphing of criterion benchmarks
project-template library: Specify Haskell project templates and generate files
prototype library: prototype-based programming on Haskell
psc-ide library and programs: Language support for the PureScript programming language
pseudomacros library: cpp-style built-in macros using Template Haskell
pure-io library: Pure IO monad.
purescript-bundle-fast program: A fast alternative to Purescript's `psc-bundle` to be used during development
pushme program: Tool to synchronize multiple directories with rsync, zfs or git-annex
python-pickle library and program: Serialization/deserialization using Python Pickle format.
QuickAnnotate library and program: Annotation Framework
quickterm library: An interface for describing and executing terminal applications
radian library: Isomorphisms for measurements that use radians.
random-derive library: A Template Haskell helper for deriving Random instances
refact library: Specify refactorings to perform with apply-refact
rehoo program: Rebuild default.hoo from many .hoo files in the current directory
repl library: IRC friendly REPL library.
resolve-trivial-conflicts program: Remove trivial conflict markers in a git repository
resource-embed program: Embed data files via C and FFI.
restyle library and program: Convert between camel case and separated words style.
ReviewBoard library and programs: Haskell bindings to ReviewBoard
Rlang-QQ library: quasiquoter for inline-R code
robin program: A build daemon for Haskell development
ruler program: Ruler tool for UHC
ruler-core program
sandman program: Manages Cabal sandboxes to avoid rebuilding packages.
sarsi library and programs: A universal quickfix toolkit and his protocol.
scan program: lexical style suggestions for source code
schedevr programs: Marge schedules and show EVR
scion library and program: Haskell IDE library
scion-browser library and program: Command-line interface for browsing and searching packages documentation
scons2dot program: Generates graphviz file of scons dependency information
scope library: An interactive renderer for plotting time-series data
scope-cairo library and program: An interactive renderer for plotting time-series data
scotty-fay library: Fay integration for Scotty.
sensei programs: Automatically run Hspec tests on file modifications
sequent-core library and programs: Alternative Core language for GHC plugins
sexp-show program: Produce a s-expression representation of Show values.
shake library and program: Build system library, like Make, but more accurate dependencies.
shake-cabal-build program: Utility for building Shake build systems using Cabal sandboxes
shake-language-c library: Utilities for cross-compiling with Shake
shake-minify library: Shake Minify Rules
shake-pack library: Shake File Pack Rule
shake-persist library and program: Shake build system on-disk caching
shaker library and program: simple and interactive command-line build tool
shellish library: shell-/perl- like (systems) programming in Haskell
shelly library and programs: shell-like (systems) programming in Haskell
shelly-extra library: shelly features that require extra dependencies
shuffle library and program: Shuffle tool for UHC
simple-get-opt library: A simple library for processing command-line options.
sizes program: Recursively show space (size and i-nodes) used in subdirectories
skeletons program: Manage project skeletons
slice-cpp-gen program: Generate C++ skeletons from slice files
smartconstructor library: A package exposing a helper function for generating smart constructors.
SourceGraph program: Static code analysis using graph-theoretic techniques.
sourcemap library: Implementation of source maps as proposed by Google and Mozilla.
sparsebit library: Sparse bitmaps for pattern match coverage
spy program: A compact file system watcher for Mac OS X, Linux and Windows
stack library and program: The Haskell Tool Stack
stack-run program: An equivalent to cabal run for stack.
stack-run-auto library and programs: Initial project template from stack
stackage library: Dummy package forcing installation of other Stackage packages
stackage-cabal library and programs: A CLI executable for cabal-based stackage commands
stackage-cli library and programs: A CLI library for stackage commands
stackage-sandbox library and program: Work with shared stackage sandboxes
stackage-setup library and program: An executable for downloading a Haskell setup
standalone-derive-topdown library: This package will derive class instance along the data type declaration tree.
steeloverseer program: A file watcher.
stepwise library
structured-haskell-mode program: Structured editing Emacs mode for Haskell
SyntaxMacros library: Syntax Macros in the form of an EDSL
testloop library: Quick feedback loop for test suites
th-fold library: TH fold generator
th-inline-io-action library: Simple inline IO action into compiled code using TH
themplate program: Project templating tool
threadscope program: A graphical tool for profiling parallel Haskell programs.
time-io-access library: IO Access for time
timeless library: An Arrow based Functional Reactive Programming library
tkyprof programs: A web-based visualizer for GHC Profiling Reports
tracetree library and program: Visualize Haskell data structures as edge-labeled trees
TraceUtils library: Functions that should have been in Debug.Trace
tracy library: Convenience wrappers for non-intrusive debug tracing
TransformersStepByStep program: Tutorial on monad transformers.
travis-meta-yaml library and program: .travis.yml preprocessor
trawl program: A tool for finding haddocks
trurl library and program: Haskell template code generator
typalyze programs: Analyzes Haskell source files for easy reference
type-prelude library: Partial port of prelude to the type level. Requires GHC 7.6.1.
typeof program: Small script for inferring types
uhc-light library and programs: Part of UHC packaged as cabal/hackage installable library
uhc-util library: UHC utilities
ui-command library and program: A framework for friendly commandline programs
urembed program: Ur/Web static content generator
urxml program: XML parser-printer supporting Ur/Web syntax extensions
UtilityTM library: Utility functions that are missing from the standard library
uuagc library and program: Attribute Grammar System of Universiteit Utrecht
uuagc-bootstrap library and program: Attribute Grammar System of Universiteit Utrecht
uuagc-cabal library: Cabal plugin for the Universiteit Utrecht Attribute Grammar System
uuagd library and program: A debugger for the UUAG system.
vacuum-cairo library: Visualize live Haskell data structures using vacuum, graphviz and cairo
vacuum-opengl library and program: Visualize live Haskell data structures using vacuum, graphviz and OpenGL.
vacuum-ubigraph library: Visualize Haskell data structures using vacuum and Ubigraph
vado library and programs: Runs commands on remote machines using ssh
vampire library and program: Analyze and visualize expression trees.
vcsgui library and programs: GUI library for source code management systems
vcswrapper library and program: Wrapper for source code management systems
virthualenv program: Virtual Haskell Environment builder
visual-graphrewrite library and program: Visualize the graph-rewrite steps of a Haskell program
visual-prof program: Create a visual profile of a program's source code
watchit library and program: File change watching utility
wxhnotepad program: An example of how to implement a basic notepad with wxHaskell
ycextra library: Additional utilities to work with Yhc Core.
yhccore library: Yhc's Internal Core language.
yi library and program: The Haskell-Scriptable Editor
yi-contrib library: Add-ons to Yi, the Haskell-Scriptable Editor
yi-fuzzy-open library: Fuzzy open plugin for Yi.
zoom-cache library and program: A streamable, seekable, zoomable cache file format

Diagnostics

trifecta library: A modern parser combinator library with convenient diagnostics

Diagram

asciidiagram library and program: Pretty rendering of Ascii diagram into svg or png.

Digest

murmur-hash library: MurmurHash2 implementation for Haskell.
murmurhash3 library: 32-bit non-cryptographic hashing

Disassembler

disassembler library: Disassembler for X86 & AMD64 machine code
hapstone library: Capstone bindings for Haskell
hdis86 library: Interface to the udis86 disassembler for x86 and x86-64 / AMD64

Distributed Computing

AERN-Net library: Compositional lazy dataflow networks for exact real number computation
amazonka library: Comprehensive Amazon Web Services SDK.
amazonka-apigateway library: Amazon API Gateway SDK.
amazonka-autoscaling library: Amazon Auto Scaling SDK.
amazonka-certificatemanager library: Amazon Certificate Manager SDK.
amazonka-cloudformation library: Amazon CloudFormation SDK.
amazonka-cloudfront library: Amazon CloudFront SDK.
amazonka-cloudhsm library: Amazon CloudHSM SDK.
amazonka-cloudsearch library: Amazon CloudSearch SDK.
amazonka-cloudsearch-domains library: Amazon CloudSearch Domain SDK.
amazonka-cloudtrail library: Amazon CloudTrail SDK.
amazonka-cloudwatch library: Amazon CloudWatch SDK.
amazonka-cloudwatch-events library: Amazon CloudWatch Events SDK.
amazonka-cloudwatch-logs library: Amazon CloudWatch Logs SDK.
amazonka-codecommit library: Amazon CodeCommit SDK.
amazonka-codedeploy library: Amazon CodeDeploy SDK.
amazonka-codepipeline library: Amazon CodePipeline SDK.
amazonka-cognito-identity library: Amazon Cognito Identity SDK.
amazonka-cognito-sync library: Amazon Cognito Sync SDK.
amazonka-config library: Amazon Config SDK.
amazonka-core library: Core data types and functionality for Amazonka libraries.
amazonka-datapipeline library: Amazon Data Pipeline SDK.
amazonka-devicefarm library: Amazon Device Farm SDK.
amazonka-directconnect library: Amazon Direct Connect SDK.
amazonka-dms library: Amazon Database Migration Service SDK.
amazonka-ds library: Amazon Directory Service SDK.
amazonka-dynamodb library: Amazon DynamoDB SDK.
amazonka-dynamodb-streams library: Amazon DynamoDB Streams SDK.
amazonka-ec2 library: Amazon Elastic Compute Cloud SDK.
amazonka-ecr library: Amazon EC2 Container Registry SDK.
amazonka-ecs library: Amazon EC2 Container Service SDK.
amazonka-efs library: Amazon Elastic File System SDK.
amazonka-elasticache library: Amazon ElastiCache SDK.
amazonka-elasticbeanstalk library: Amazon Elastic Beanstalk SDK.
amazonka-elasticsearch library: Amazon Elasticsearch Service SDK.
amazonka-elastictranscoder library: Amazon Elastic Transcoder SDK.
amazonka-elb library: Amazon Elastic Load Balancing SDK.
amazonka-emr library: Amazon Elastic MapReduce SDK.
amazonka-gamelift library: Amazon GameLift SDK.
amazonka-glacier library: Amazon Glacier SDK.
amazonka-iam library: Amazon Identity and Access Management SDK.
amazonka-importexport library: Amazon Import/Export SDK.
amazonka-inspector library: Amazon Inspector SDK.
amazonka-iot library: Amazon IoT SDK.
amazonka-iot-dataplane library: Amazon IoT Data Plane SDK.
amazonka-kinesis library: Amazon Kinesis SDK.
amazonka-kinesis-firehose library: Amazon Kinesis Firehose SDK.
amazonka-kms library: Amazon Key Management Service SDK.
amazonka-lambda library: Amazon Lambda SDK.
amazonka-marketplace-analytics library: Amazon Marketplace Commerce Analytics SDK.
amazonka-marketplace-metering library: Amazon Marketplace Metering SDK.
amazonka-ml library: Amazon Machine Learning SDK.
amazonka-opsworks library: Amazon OpsWorks SDK.
amazonka-rds library: Amazon Relational Database Service SDK.
amazonka-redshift library: Amazon Redshift SDK.
amazonka-route53 library: Amazon Route 53 SDK.
amazonka-route53-domains library: Amazon Route 53 Domains SDK.
amazonka-s3 library: Amazon Simple Storage Service SDK.
amazonka-sdb library: Amazon SimpleDB SDK.
amazonka-ses library: Amazon Simple Email Service SDK.
amazonka-sns library: Amazon Simple Notification Service SDK.
amazonka-sqs library: Amazon Simple Queue Service SDK.
amazonka-ssm library: Amazon Simple Systems Management Service SDK.
amazonka-storagegateway library: Amazon Storage Gateway SDK.
amazonka-sts library: Amazon Security Token Service SDK.
amazonka-support library: Amazon Support SDK.
amazonka-swf library: Amazon Simple Workflow Service SDK.
amazonka-test library: Common functionality for Amazonka library test-suites.
amazonka-waf library: Amazon WAF SDK.
amazonka-workspaces library: Amazon WorkSpaces SDK.
api-tools library and program: DSL for generating API boilerplate and docs
aws library and programs: Amazon Web Services (AWS) for Haskell
aws-cloudfront-signer library: For signing AWS CloudFront HTTP URL requests
aws-ec2 library and programs: AWS EC2/VPC, ELB and CloudWatch client library for Haskell
aws-elastic-transcoder library and program: Haskell suite for the Elastic Transcoder service
aws-general library: Bindings for Amazon Web Services (AWS) General Reference
aws-kinesis library: Bindings for Amazon Kinesis
aws-performance-tests library and program: Performance Tests for the Haskell bindings for Amazon Web Services (AWS)
aws-sdk library: AWS SDK for Haskell
aws-sign4 library: Amazon Web Services (AWS) Signature v4 HTTP request signer
aws-sns library: Bindings for AWS SNS Version 2013-03-31
cctools-workqueue library: High-level interface to CCTools' WorkQueue library
courier library and programs: A message-passing library for simplifying network applications
DSTM library and programs: A framework for using STM within distributed systems
edenmodules library: Semi-explicit parallel programming library
HAppS-Data library: HAppS data manipulation libraries
HAppS-IxSet library
HAppS-Server library: Web related tools and services.
HAppS-State library: Event-based distributed state.
HAppS-Util library: Web framework
happstack library and program: The haskell application server stack + code generation
happstack-contrib library and program: Web related tools and services.
happstack-data library and program: Happstack data manipulation libraries
happstack-helpers library: Convenience functions for Happstack.
happstack-ixset library and program: Efficient relational queries on Haskell sets.
happstack-state library and program: Event-based distributed state.
happstack-static-routing library: Support for static URL routing with overlap detection for Happstack.
happstack-util library and program: Web framework
haskell-mpi library and programs: Distributed parallel programming in Haskell using MPI.
hdph library and programs: Haskell distributed parallel Haskell
hdph-closure library: Explicit closures in Haskell distributed parallel Haskell
Holumbus-Distribution library and programs: intra- and inter-program communication
Holumbus-MapReduce library and programs: a distributed MapReduce framework
Holumbus-Storage library and programs: a distributed storage system
linode library: Bindings to the Linode API
LogicGrowsOnTrees library and programs: a parallel implementation of logic programming using distributed tree exploration
LogicGrowsOnTrees-MPI library and programs: an adapter for LogicGrowsOnTrees that uses MPI
LogicGrowsOnTrees-network library and programs: an adapter for LogicGrowsOnTrees that uses multiple processes running in a network
LogicGrowsOnTrees-processes library and programs: an adapter for LogicGrowsOnTrees that uses multiple processes for parallelism
net-concurrent library: Concurrent over the network execution library
remote library: Cloud Haskell
sirkel library: Sirkel, a Chord DHT
sparkle library and program: Distributed Apache Spark applications in Haskell
task-distribution library and programs: Distributed processing of changing tasks
vector-clock library: Vector clocks for versioning message flows
wolf library and programs: Amazon Simple Workflow Service Wrapper.

Distribution

archlinux library: Support for working with Arch Linux packages.
archlinux-web library and programs: Website maintenance for Arch Linux packages
archnews program: Convert Arch Linux package updates in RSS to pretty markdown
binembed library and program: Embed data into object files.
binembed-example program: Example project using binembed to embed data in object files.
Blueprint library: Preview of a new build system.
cab library and program: A maintenance command of Haskell cabal packages
Cabal library: A framework for packaging Haskell software
cabal-audit program: Check how up-to-date your .cabal dependencies are.
cabal-constraints program: Repeatable builds for cabalized Haskell projects.
cabal-debian library and program: Create a Debianization for a Cabal package
cabal-dependency-licenses program: Compose a list of a project's transitive dependencies with their licenses
cabal-dir program: show dist dir of 'cabal copy/install'
cabal-helper library and program: Simple interface to some of Cabal's configuration state used by ghc-mod
Cabal-ide-backend library: A framework for packaging Haskell software
cabal-install program: The command-line interface for Cabal and Hackage.
cabal-install-bundle program: The (bundled) command-line interface for Cabal and Hackage.
cabal-install-ghc72 program: Temporary version of cabal-install for ghc-7.2
cabal-install-ghc74 program: Temporary version of cabal-install for ghc-7.4
cabal-macosx library and program: Cabal support for creating Mac OSX application bundles.
cabal-nirvana programs: Avoid Cabal dependency hell by constraining to known good versions. (deprecated)
cabal-progdeps program: Show dependencies of program being built in current directory
cabal-rpm program: RPM packaging tool for Haskell Cabal-based packages
cabal-setup program: The user interface for building and installing Cabal packages
cabal-sort programs: Topologically sort cabal packages
cabal-src programs: Alternative install procedure to avoid the diamond dependency issue.
cabal-uninstall program: Uninstall cabal packages
cabal-upload program: Command-line tool for uploading packages to Hackage
cabal2arch program: Create Arch Linux packages from Cabal packages.
cabal2doap program: Cabal to Description-of-a-Project (DOAP)
cabal2ebuild library and programs: make gentoo's .ebuild file from .cabal file
cabal2nix programs: Convert Cabal files into Nix build instructions
cabalgraph program: Generate pretty graphs of module trees from cabal files
cabalmdvrpm library and program: Create mandriva rpm from cabal package
cabalrpmdeps library and programs: Autogenerate rpm dependencies from cabal files
cabalvchk program: Verify installed package version against user-specified constraints.
cabin program: Cabal binary sandboxes.
capri program: A simple wrapper over cabal-install to operate in project-private mode.
cartel library and program: Specify Cabal files in Haskell
cblrepo program: Tool to maintain a database of CABAL packages and their dependencies
check-pvp program: Check whether module and package imports conform to the PVP
darcs-graph program: Generate graphs of darcs repository activity
darcs-monitor program: Darcs repository monitor (sends email)
darcsden programs: Darcs repository UI and hosting/collaboration app (hub.darcs.net branch).
darcswatch programs: Track application of Darcs patches
depends program: A simple configuration management tool for Haskell
diffcabal program: Diff two .cabal files syntactically
dist-upload library and program: Generate/Upload cabal package to Hackage.
dynamic-cabal library: Access the functions from the Cabal library without depending on it
ekg-json library: JSON encoding of ekg metrics
exherbo-cabal library and program: Exheres generator for cabal packages
franchise library: A package for configuring and building Haskell software
gdo program: recursive atomic build system
hackage-db library: access Hackage's package database via Data.Map
hackage-diff program: Compare the public API of different versions of a Hackage library
hackage-mirror library and program: Simple mirroring utility for Hackage
hackage-plot program: Generate cumulative graphs of hackage uploads
hackage-processing program: Process 00-index.tar.gz from Hackage
hackage-repo-tool program: Utility to manage secure file-based package repositories
hackage-security library: Hackage security library
hackage-security-HTTP library: Hackage security bindings against the HTTP library
hackage-server programs: The Hackage web server
hackage-sparks program: Generate sparkline graphs of hackage statistics
hackage-whatsnew program: Check for differences between working directory and hackage
hackage2hwn program: Convert Hackage RSS feeds to wiki format for publishing on Haskell.org
hackage2twitter program: Send new Hackage releases to Twitter
hackport program: Hackage and Portage integration tool
haddocset program: Generate docset of Dash by Haddock haskell documentation tool
haskell-packages library: Haskell suite library for package management and integration with Cabal
haskell-platform-test program: A test system for the Haskell Platform environment
haskell-updater program: Rebuild Haskell dependencies in Gentoo
hellage programs: Distributed hackage mirror
hi library and program: Generate scaffold for cabal project
highlight-versions program: Highlight package versions which differ from the latest version on Hackage
hmk library and program: A make alternative based on Plan9's mk.
hslackbuilder program: HSlackBuilder automatically generates slackBuild scripts from a cabal package
hub program: For multiplexing GHC installations and providing development sandboxes
jailbreak-cabal program: Strip version restrictions from build dependencies in Cabal files.
kif-parser program: Process KIF iOS test logs
language-nix library: Data types and useful functions to represent and manipulate the Nix language.
lscabal program: List exported modules from a set of .cabal files
mega-sdist program: Handles uploading to Hackage from mega repos (deprecated)
mkbndl program: Makes an OS X .app bundle from a binary.
mkcabal program: Generate cabal files for a Haskell project
nix-paths library: Knowledge of Nix's installation directories.
nixos-types library: this package is obsolete; see cabal2nix instead
packdeps library and program: Check your cabal packages for lagging dependencies.
packunused program: Tool for detecting redundant Cabal package dependencies
populate-setup-exe-cache library: Empty Cabal package
precis library and program: Diff Cabal packages.
redo program: software build system, make replacement, implementation of djb's redo
stackage-build-plan library and program: Calculate and print (in different formats) Stackage build plans
stackage-curator library and programs: Tools for curating Stackage bundles
stackage-install library and program: Secure download of packages for cabal-install
stackage-metadata library and program: Grab current metadata for all packages
stackage-update library and program: Update your package index incrementally (requires git)
stackage-upload library and program: A more secure version of cabal upload which uses HTTPS
standalone-haddock program: Generate standalone haddock documentation for a set of packages
superdoc library and program: Additional documentation markup and Unicode support
yackage programs: Personal Hackage replacement for testing new packages.
zoom library and program: A rake/thor-like task runner written in Haskell

DNS

haeredes program: Confirm delegation of NS and MX records.

Documentation

acme-operators library: Operators of base, all in one place!
activehs program: Haskell code presentation tool
activehs-base library: Basic definitions for activehs
archiver library and program: Archive supplied URLs in WebCite & Internet Archive
dash-haskell program: Convert package Haddock to Dash docsets (IDE docs)
doccheck program: Checks Haddock comments for pitfalls and version changes.
docidx program: Generate an HTML index of installed Haskell packages and their documentation.
Docs library: Documentation types library.
embeddock library and program: Embed the values in scope in the haddock documentation of the module
embeddock-example library: Example of using embeddock.
haddock program: A documentation-generation tool for Haskell libraries
haddock-api library: A documentation-generation tool for Haskell libraries
haddock-library library: Library exposing some functionality of Haddock.
hoogle-index program: Easily generate Hoogle indices for installed packages
hyakko program: Literate-style Documentation Generator
snm library and program: The Simple Nice-Looking Manual Generator.

Download Manager

manatee-curl library and program: Download Manager extension for Manatee.
manatee-terminal library and program: Terminal Emulator extension for Manatee.

EBNF

ebnf-bff library and program: Parser combinators & EBNF, BFFs!

Eden

edenmodules library: Semi-explicit parallel programming library
edentv program: A Tool to Visualize Parallel Functional Program Executions
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC

Editor

editpipe program: Edit stdin using an editor before sending to stdout.
fix-imports program: Program to manage the imports of a haskell module
Hedi library and program: Line oriented editor
hpage program: A scrapbook for Haskell developers
Hsed library and program: Stream Editor in Haskell
leksah library and programs: Haskell IDE written in Haskell
manatee-editor library and program: Editor extension for Manatee.
module-management library and program: Clean up module imports, split and merge modules
nvim-hs library and program: Haskell plugin backend for neovim
nvim-hs-contrib library: Haskell plugin backend for neovim
wxhnotepad program: An example of how to implement a basic notepad with wxHaskell
yavie library and program: yet another visual editor
yi library and program: The Haskell-Scriptable Editor
yi-contrib library: Add-ons to Yi, the Haskell-Scriptable Editor
yi-fuzzy-open library: Fuzzy open plugin for Yi.
yi-gtk library: The Haskell-Scriptable Editor, helper package
yi-monokai library: Monokai colour theme for the Yi text editor
yi-solarized library: Solarized colour theme for the Yi text editor
yi-spolsky library: Spolsky colour theme for the Yi text editor
yi-vty library: The Haskell-Scriptable Editor, helper package

Education

activehs program: Haskell code presentation tool
activehs-base library: Basic definitions for activehs
clanki program: Command-line spaced-repetition software
Craft3e library and programs: Code for Haskell: the Craft of Functional Programming, 3rd ed.
crypto-enigma library: An Enigma machine simulator with display.
dia-base library: An EDSL for teaching Haskell with diagrams - data types
dia-functions library: An EDSL for teaching Haskell with diagrams - functions
hscurses-fish-ex program: hscurses swimming fish example
ideas library: Feedback services for intelligent tutoring systems
ideas-math program: Interactive domain reasoner for logic and mathematics
io-machine library: Easy I/O model to learn IO monad
lambda-canvas library: Educational drawing canvas for FP explorers.
memscript program: Command line utility for memorizing scriptures or any other text
onu-course library: Code for the Haskell course taught at the Odessa National University in 2012
pure-io library: Pure IO monad.
risc386 program: Reduced instruction set i386 simulator
smartword programs: Web based flash card for Word Smart I and II vocabularies
SoccerFun library and program: Football simulation framework for teaching functional programming
SoccerFunGL library and programs: OpenGL UI for the SoccerFun framework
TicTacToe library: A sub-project (exercise) for a functional programming course
turing library: A simple simulator for Turing machines
twentefp library: Lab Assignments Environment at Univeriteit Twente
twentefp-eventloop-graphics library: Used as Lab Assignments Environment at the University of Twente
twentefp-graphs library: Lab Assignments Environment at Univeriteit Twente
twentefp-number library: Lab Assignments Environment at Univeriteit Twente
wxhnotepad program: An example of how to implement a basic notepad with wxHaskell

Effect

cprng-aes-effect library: Run random effect using cprng-aes, a crypto pseudo number generator.
crypto-random-effect library: A random effect using crypto-random
effin library: A Typeable-free implementation of extensible effects
extensible-effects library: An Alternative to Monad Transformers
log-effect library: An extensible log effect using extensible-effects
mysql-effect library: An extensible mysql effect using extensible-effects and mysql-simple
random-eff library: A simple random generator library for extensible-effects
random-effin library: A simple random generator library for effin
resource-effect library: A port of the package 'resourcet' for extensible effects.
system-random-effect library: Random number generation for extensible effects.
THEff library: TH implementation of effects.

Email

carboncopy program: Drop emails from threads being watched into special CC folder.
email-postmark library: ...
mbox-tools programs: A collection of tools to process mbox files
mime-mail library: Compose MIME email messages.
notmuch-haskell library and program: Binding for notmuch MUA library
ses-html library: Send HTML formatted emails using Amazon's SES REST API with blaze
ses-html-snaplet library: Snaplet for the ses-html package
snaplet-ses-html library: Snaplet for the ses-html package

Embedded

atom library: An EDSL for embedded hard realtime applications.
atom-msp430 library: Convenience functions for using Atom with the MSP430 microcontroller family.
CarneadesDSL library: An implementation and DSL for the Carneades argumentation model.
CarneadesIntoDung library and program: A translation from the Carneades argumentation model into Dung's AFs.
copilot library and program: A stream DSL for writing embedded C programs.
copilot-c99 library and program: A compiler for Copilot targeting C99.
copilot-cbmc library: Copilot interface to a C model-checker.
copilot-core library: An intermediate representation for Copilot.
copilot-language library: A Haskell-embedded DSL for monitoring hard real-time distributed systems.
copilot-libraries library: Libraries for the Copilot language.
copilot-sbv library: A compiler for CoPilot targeting SBV.
copilot-theorem library: k-induction for Copilot.
Dung library and program: An implementation of the Dung argumentation frameworks.
ecu programs: Tools for automotive ECU development.
fault-tree library: A fault tree analysis library.
ImperativeHaskell library: A library for writing Imperative style haskell.
improve library: An imperative, verifiable programming language for high assurance applications.
processor-creative-kit library: a creation kit for instruction sets and cpu simulators and development tools
srec library: Parsing and processing s-records.
sunroof-compiler library: Monadic Javascript Compiler
sunroof-examples programs: Tests for Sunroof
sunroof-server library: Monadic Javascript Compiler - Server Utilities
vcd library: Reading and writing VCD files.
verilog library: Verilog preprocessor, parser, and AST.

Enumerator

attoparsec-enumerator library: Pass input from an enumerator to an Attoparsec parser.
attoparsec-text-enumerator library: (deprecated)
blaze-builder-enumerator library: Enumeratees for the incremental conversion of builders to bytestrings.
ChannelT library: Generalized stream processors
coroutine-enumerator library: Bridge between the monad-coroutine and enumerator packages.
enumerator library: Reliable, high-performance processing with left-fold enumerators
enumerator-fd library: Enumerator instances for monads-fd classes
enumerator-tf library: Enumerator instances for monads-tf classes
expat-enumerator library: Enumerator-based API for Expat
filesystem-enumerator library: Enumerator-based API for manipulating the filesystem.
folds library: Beautiful Folding
http-enumerator library and program: HTTP client package with enumerator interface and HTTPS support. (deprecated)
iterIO library: Iteratee-based IO with pipe operators
iterio-server library: Library for building servers with IterIO
json-enumerator library: Pure-Haskell utilities for dealing with JSON with the enumerator package. (deprecated)
libxml-enumerator library: Enumerator-based API for libXML's SAX interface
lzma-enumerator library: Enumerator interface for lzma/xz compression.
machines library: Networked stream transducers
netstring-enumerator library: Enumerator-based netstring parsing
network-enumerator library: Enumerators for network sockets
pcap-enumerator library: Convert a pcap into an enumerator.
pipes-conduit library: Conduit adapters
pipes-core library: Compositional pipelines
pipes-extra library and programs: Various basic utilities for Pipes.
twitter-enumerator library: Twitter API package with enumerator interface and Streaming API support.
xml-enumerator library: Pure-Haskell utilities for dealing with XML with the enumerator package. (deprecated)
xml-enumerator-combinators library and program: Parser combinators for xml-enumerator and compatible XML parsers.
yajl-enumerator library: Enumerator-based interface to YAJL, an event-based JSON implementation
zlib-enum program: Enumerator interface for zlib compression

Environment

SWMMoutGetMB library: A parser for SWMM 5 binary .OUT files

Error Handling

Dangerous library: Monads for operations that can exit early and produce warnings
error-message library: Composable error messages.
error-util library: Set of utils and operators for error handling
errors library: Simplified error-handling
exception-monads-fd library: Exception monad transformer instances for monads-fd classes.
exception-monads-tf library: Exception monad transformer instances for monads-tf classes.
exception-mtl library: Exception monad transformer instances for mtl classes.
exception-transformers library: Type classes and monads for unchecked extensible exceptions.
failable-list library: A list-like type for lazy streams, which might terminate with an error.
partial-handler library: A composable exception handler
pipes-errors library: Integration between pipes and errors
pipes-safe library: Safety for the pipes ecosystem
postgresql-error-codes library: PostgreSQL error codes
pretty-error library: Pretty error messages for runtime invariants
prim-spoon library: Catch errors thrown from pure computations using primops.
resumable-exceptions library: A monad transformer for resumable exceptions
slave-thread library: A principal solution to ghost threads and silent exceptions
spoon library: Catch errors thrown from pure computations.
tagged-exception-core library: Reflect exceptions using phantom types.

Eval.so

cruncher-types library: Request and Response types for Eval.so's API

Eventloop

eventloop library: A different take on an IO system. Based on Amanda's IO loop, ...

Example

huttons-razor program: Quick implemention of Hutton's Razor

Exceptions

exceptions library: Extensible optionally-pure exceptions
partial-handler library: A composable exception handler
ratel library: Notify Honeybadger about exceptions.
ratel-wai library: Notify Honeybadger about exceptions via a WAI middleware.
slave-thread library: A principal solution to ghost threads and silent exceptions
tagged-exception-core library: Reflect exceptions using phantom types.

Experiment

laborantin-hs library and program: an experiment management framework

Experimental

Quelea library: Programming with Eventual Consistency over Cassandra.
ZipperAG library: An implementationg of Attribute Grammars using Functional Zippers

Factual

Facts library: A collection of facts about the real world.
wedding-announcement program: a wedding announcement

Failure

attempt library: Concrete data type for handling extensible exceptions as failures. (deprecated)
control-monad-attempt library: Monad transformer for attempt. (deprecated)
control-monad-exception library: Explicitly typed, checked exceptions with stack traces
control-monad-exception-monadsfd library: Monads-fd instances for the EMT exceptions monad transformer
control-monad-exception-monadstf library: Monads-tf instances for the EMT exceptions monad transformer
control-monad-exception-mtl library: MTL instances for the EMT exceptions monad transformer
control-monad-failure library: A class for monads which can fail with an error. (deprecated)
control-monad-failure-mtl library: A class for monads which can fail with an error for mtl 1 (deprecated)
convertible-ascii library: convertible instances for ascii
convertible-text program: Typeclasses and instances for converting between types (deprecated)
csp library: Discrete constraint satisfaction problem (CSP) solver.
exception-monads-fd library: Exception monad transformer instances for monads-fd classes.
exception-monads-tf library: Exception monad transformer instances for monads-tf classes.
exception-mtl library: Exception monad transformer instances for mtl classes.
exception-transformers library: Type classes and monads for unchecked extensible exceptions.
failure library: A simple type class for success/failure computations. (deprecated)
FailureT library: Failure Monad Transformer
nondeterminism library: A monad and monad transformer for nondeterministic computations.
partial-handler library: A composable exception handler
resumable-exceptions library: A monad transformer for resumable exceptions
safe-failure library: Library for safe functions (deprecated)
safe-failure-cme library: control-monad-exception Instances for safe-failure
slave-thread library: A principal solution to ghost threads and silent exceptions
success library: A version of Either specialised for encoding of success or failure
tagged-exception-core library: Reflect exceptions using phantom types.

Fay

fay library and programs: A compiler for Fay, a Haskell subset that compiles to JavaScript.
fay-base library: The base package for Fay.
fay-dom library: DOM FFI wrapper library for Fay
fay-jquery library: jQuery bindings for Fay.
fay-ref library: Like IORef but for Fay.
fay-text library: Fay Text type represented as JavaScript strings
scotty-fay library: Fay integration for Scotty.
snaplet-fay library: Fay integration for Snap with request- and pre-compilation.

Fedora

copr library: Haskell interface to the Fedora Copr system
fedora-packages library: Haskell interface to the Fedora Packages webapp API.
mdapi library: Haskell interface to Fedora's mdapi

Feed

manatee-reader library and program: Feed reader extension for Manatee.

FFI

bindings library: Deprecated package.
bindings-apr library: Low level bindings to Apache Portable Runtime (APR)
bindings-apr-util library: Low level bindings to Apache Portable Runtime Utility (APR Utility)
bindings-audiofile library: Low level bindings to audiofile
bindings-bfd library: Bindings for libbfd, a library of the GNU `binutils'
bindings-cctools library: Bindings to the CCTools WorkQueue C library
bindings-codec2 library and program: Very low-level FFI bindings for Codec2
bindings-common library: This package is obsolete. Look for bindings-DSL instead.
bindings-directfb library: Low level bindings to DirectFB
bindings-DSL library: FFI domain specific language, on top of hsc2hs.
bindings-eskit library: Bindings to ESKit.
bindings-EsounD library: Low level bindings to EsounD (ESD; Enlightened Sound Daemon)
bindings-fann library: Low level bindings to FANN neural network library.
bindings-friso library: Low level bindings for friso
bindings-glib library: Low level bindings to GLib.
bindings-gobject library: Low level bindings supporting GObject and derived libraries.
bindings-gpgme library: Project bindings-* raw interface to gpgme
bindings-gsl library: Low level bindings to GNU GSL.
bindings-gts library: Low level bindings supporting GTS, the GNU Triangulated Surface Library
bindings-hamlib library and program: Hamlib bindings for Haskell
bindings-hdf5 library: Project bindings-* raw interface to HDF5 library
bindings-K8055 library: Bindings to Velleman K8055 dll
bindings-levmar library: Low level bindings to the C levmar (Levenberg-Marquardt) library
bindings-libcddb library: Low level binding to libcddb.
bindings-libffi library: Low level bindings to libffi.
bindings-libftdi library: Low level bindings to libftdi.
bindings-librrd library: Low level bindings to RRDtool
bindings-libstemmer library: Binding for libstemmer with low level binding.
bindings-libusb library: Low level bindings to libusb.
bindings-libzip library: Low level bindings to libzip.
bindings-lxc library: Direct Haskell bindings to LXC (Linux containers) C API.
bindings-parport library: parport bindings
bindings-posix library: Low level bindings to posix.
bindings-ppdev library: PPDev bindings
bindings-sane library: FFI bindings to libsane
bindings-sc3 library: Low-level bindings to the SuperCollider synthesis engine library.
bindings-sqlite3 library: Low level bindings to sqlite3.
bindings-svm library: Low level bindings to libsvm.
bindings-uname library: Low-level binding to POSIX uname(3)
bindings-wlc library: Bindings against the wlc library
bindings-yices library: Bindings to the Yices theorem prover
com library: Haskell COM support library
fixed-storable-array library: Fixed-size wrapper for StorableArray, ...
foreign-var library: Encapsulating mutatable state in external libraries
fresco-binding library: Fresco binding for Haskell
gitlib library: API library for working with Git repositories
gitlib-cross library: Run tests between repositories
gitlib-libgit2 library: Libgit2 backend for gitlib
gitlib-sample library: Sample backend for gitlib showing the basic structure for any backend.
gitlib-test library: Test library for confirming gitlib backend compliance
gitlib-utils library: Generic utility functions for working with Git repositories
H program: The Haskell/R mixed programming environment.
haroonga library: Low level bindings for Groonga.
haskell-mpi library and programs: Distributed parallel programming in Haskell using MPI.
henet library: Bindings and high level interface for to ENet v1.3.9
hlibBladeRF library: Haskell binding to libBladeRF SDR library
hlibgit2 library: Low-level bindings to libgit2
hmatrix-gsl-stats library: GSL Statistics interface
inline-c library and program: Write Haskell source files including C code inline. No FFI required.
inline-c-cpp library: Lets you embed C++ code into Haskell.
inline-c-win32 library: Win32 API Context for the inline-c library
inline-java library: Java interop via inline Java code in Haskell modules.
inline-r library: Seamlessly call R from Haskell and vice versa. No FFI required.
IrrHaskell library: Haskell FRP binding to the Irrlicht game engine.
leveldb-haskell library and programs: Haskell bindings to LevelDB
leveldb-haskell-fork library and programs: Haskell bindings to LevelDB
libpafe library: Wrapper for libpafe
libxls library: Bindings to libxls
linux-file-extents library and program: Retrieve file fragmentation information under Linux
missing-foreign library: Convenience functions for FFI work
modulo library and program: Modular C code generator
MusicBrainz-libdiscid library: Binding to libdiscid by MusicBrainz
nitro library: Haskell bindings for Nitro
OpenCL library: Haskell high-level wrapper for OpenCL
OpenCLWrappers library: The OpenCL Standard for heterogenous data-parallel computing
Pathfinder library: Relational optimiser and code generator
rocksdb-haskell library: Haskell bindings to RocksDB
sednaDBXML library: Sedna C API XML Binding
sparkle library and program: Distributed Apache Spark applications in Haskell
statgrab library: Collect system level metrics and statistics
storable-static-array library: Statically-sized array wrappers with Storable instances for FFI marshaling
symengine-hs library and program: SymEngine symbolic mathematics engine for Haskell
ViennaRNA-bindings library: ViennaRNA v2 bindings
workflow-osx library and program: a "Desktop Workflow" monad with Objective-C bindings
zeromq-haskell library: Bindings to ZeroMQ 2.1.x
zeromq3-haskell library: Bindings to ZeroMQ 3.x
zeromq4-haskell library: Bindings to ZeroMQ 4.x

FFI Tools

fficxx library: automatic C++ binding generation
fficxx-runtime library: Runtime for fficxx-generated library
hacanon-light library: Template Haskell framework for automatic FFI code generation.
HSFFIG library and programs: Generate FFI import declarations from C include files
j2hs program: j2hs
java-bridge programs: Bindings to the JNI and a high level interface generator.
java-bridge-extras library: Utilities for working with the java-bridge package.
java-reflect library: Tools for reflecting on Java classes.

File

binary-file library: read/write binary file
foscam-directory library: Foscam File format
foscam-filename library: Foscam File format
foscam-sort library and program: Foscam File format
png-file library: read/write png file

File Manager

manatee-filemanager library and program: File manager extension for Manatee.
RollingDirectory program: Limits the size of a directory's contents

Filesystem

btrfs library and programs: Bindings to the btrfs API
definitive-filesystem library: A library that enable you to interact with the filesystem in a definitive way.
disk-free-space library: Retrieve information about disk space usage
fsnotify library: Cross platform library for file change notification.
HsOpenSSL-x509-system library: Use the system's native CA certificate store with HsOpenSSL
linux-file-extents library and program: Retrieve file fragmentation information under Linux
ltext library and program: Higher-order file applicator
partly library and program: Inspect, create, and alter MBRs.
path library: Support for well-typed paths
path-io library: Interface to ‘directory’ package for users of ‘path’
plan-b library: Failure-tolerant file and directory editing

Finance

bgmax library: Parse BgMax-files
bitcoin-api library: Provides access to the RPC API of Bitcoin Core
bitcoin-api-extra library: Higher level constructs on top of the bitcoin-api package
bitcoin-block library: Utility functions for manipulating bitcoin blocks
bitcoin-script library: Compilation, manipulation and decompilation of Bitcoin scripts
bitcoin-tx library: Utility functions for manipulating bitcoin transactions
bitcoin-types library: Provides consistent low-level types used commonly among Bitcoin implementations
bitx-bitcoin library: A Haskell library for working with the BitX bitcoin exchange.
commodities library: Library for working with commoditized amounts and price histories
eurofxref library: Free foreign exchange/currency feed from the European Central Bank
haskoin library: Implementation of the Bitcoin protocol.
haskoin-core library: Implementation of the core Bitcoin protocol features.
haskoin-crypto library: Implementation of Bitcoin cryptographic primitives.
haskoin-node library: Implementation of a Bitoin node.
haskoin-protocol library: Implementation of the Bitcoin network protocol messages
haskoin-script library: Implementation of Bitcoin script parsing and evaluation
haskoin-util library: Utility functions for the Network.Haskoin project
haskoin-wallet library and program: Implementation of a Bitcoin SPV Wallet with BIP32 and multisig support.
haslo library and programs: Loan calculator engine.
hledger library and program: Command-line interface for the hledger accounting tool
hledger-chart program: A pie chart image generator for the hledger accounting tool.
hledger-diff program: Compares the transactions in two ledger files.
hledger-interest program: computes interest for a given account
hledger-irr program: computes the internal rate of return of an investment
hledger-lib library: Core data types, parsers and functionality for the hledger accounting tools
hledger-ui program: Curses-style user interface for the hledger accounting tool
hledger-vty program: A curses-style console interface for the hledger accounting tool.
hledger-web library and program: Web interface for the hledger accounting tool
hquantlib library: HQuantLib is a port of essencial parts of QuantLib to Haskell
hstradeking library and program: Tradeking API bindings for Haskell
iban library: Validate and generate IBANs
lendingclub library: Bindings for the LendingClub marketplace API
ofx library: Parser for OFX data
open-symbology library
penny library and programs: Extensible double-entry accounting system
penny-bin programs: Deprecated - use penny package instead
penny-lib programs: Deprecated - use penny package instead
pgstream library: Streaming Postgres bindings
prosper library: Bindings to the Prosper marketplace API
quantfin library and program: Quant finance library in pure Haskell.
rabocsv2qif library and program: A library and program to create QIF files from Rabobank CSV exports.
tsparse library and programs: Parses U.S. federal Thrift Savings Plan PDF quarterly statements
UMM program: A small command-line accounting tool

Financial

FpMLv53 library: A binding for the Financial Products Markup Language (v5.3)
hasloGUI program: Loan calculator Gtk GUI. Based on haslo (Haskell Loan) library.

Fitness

fit library: FIT file decoder

Font

FontyFruity library: A true type file format loader

Foreign

aligned-foreignptr library: An aligned ForeignPtr type
AppleScript library: Call AppleScript from Haskell, and then call back into Haskell.
arbb-vm library: FFI binding to the Intel Array Building Blocks (ArBB) virtual machine.
bindings-libzip library: Low level bindings to libzip.
bindings-yices library: Bindings to the Yices theorem prover
bits-atomic library and program: Atomic bit operations on memory locations for low-level synchronization
c-storable-deriving library: Generate C-like storable instances from datatypes
cinvoke library: A binding to cinvoke.
cplusplus-th library: C++ Foreign Import Generation
cpython library: Bindings for libpython
cublas library: FFI bindings to the CUDA CUBLAS and CUSPARSE libraries
cuda library and program: FFI binding to the CUDA interface for programming NVIDIA GPUs
cufft library: Haskell bindings for the CUFFT library
enumset library: Sets of enumeration values represented by machine words
erlang library: FFI interface to Erlang.
errno library: a FFI utility
foreign-storable-asymmetric library: Types and instances for implementing a Storable with different peek and poke
greencard library and program: GreenCard, a foreign function pre-processor for Haskell.
HaPy library: Haskell bindings for Python
hdis86 library: Interface to the udis86 disassembler for x86 and x86-64 / AMD64
hlibev library: FFI interface to libev
hlibfam library: FFI interface to libFAM
hlibsass library: Low-level bindings to Libsass
hopencl library: Haskell bindings for OpenCL
hopenssl library: FFI bindings to OpenSSL's EVP digest interface
hoppy-generator library: C++ FFI generator - Code generator
hoppy-runtime library: C++ FFI generator - Runtime support
hoppy-std library: C++ FFI generator - Standard library bindings
HPlot library and program: A minimal monadic PLplot interface for Haskell
hR library: R bindings and interface
hsdns library: Asynchronous DNS Resolver
hswip library: embedding prolog in haskell
hsyscall library: FFI to syscalls
hsyslog library: FFI interface to syslog(3) from POSIX.1-2001
htaglib library: Bindings to TagLib, audio meta-data library
j2hs program: j2hs
java-bridge programs: Bindings to the JNI and a high level interface generator.
java-bridge-extras library: Utilities for working with the java-bridge package.
java-reflect library: Tools for reflecting on Java classes.
lambda-bridge library and program: A bridge from Haskell (on a CPU) to VHDL on a FPGA.
language-c-inline library: Inline C & Objective-C code in Haskell for language interoperability
libffi library: A binding to libffi
libltdl library and program: FFI interface to libltdl
libnvvm library: FFI binding to libNVVM, a compiler SDK component from NVIDIA
libxml-sax library: Bindings for the libXML2 SAX interface
LibZip library: Bindings to libzip, a library for manipulating zip archives.
mathlink library: Write Mathematica packages in Haskell
matlab library: Matlab bindings and interface
minimung program: Shows how to run grabber on Mac OS X
missing-py2 library: Haskell interface to Python
ncurses library: Modernised bindings to GNU ncurses
notmuch-haskell library and program: Binding for notmuch MUA library
Salsa library: A .NET Bridge for Haskell
storable library: Storable type class for variable-sized data
storable-record library and program: Elegant definition of Storable instances for records
storable-tuple library: Storable instance for pairs and triples
Thrift library: Haskell bindings for the Apache Thrift RPC system
thrift library: Haskell bindings for the Apache Thrift RPC system
winerror library: Error handling for foreign calls to the Windows API.
yajl library: Bindings for YAJL, an event-based JSON implementation

Foreign Binding

libxslt library: Binding to libxslt
rdtsc-enolan library: Binding to sources of high-efficiency, high-precision, ...
sundown library: Bindings to the sundown markdown library
upskirt library: Binding to upskirt

Formal Languages

ADPfusion library and programs: Efficient, high-level dynamic programming.
ForestStructures library: Tree- and forest structures
FormalGrammars library and programs: (Context-free) grammars in formal language theory
GenussFold library and program: MCFGs for Genus-1 RNA Pseudoknots
GrammarProducts library and program: Grammar products and higher-dimensional grammars
lindenmayer library: L-systems in Haskell

Formal Methods

acl2 library: Writing and calling ACL2 from Haskell.
afv program: Infinite state model checking of iterative C programs.
CSPM-CoreLanguage library: Definition of a FDR-compatible CSP core-language.
CSPM-cspm library and program: cspm command line tool for analyzing CSPM specifications.
CSPM-FiringRules library: Firing rules semantic of CSPM
CSPM-Frontend library: A CSP-M parser compatible with FDR-2.91
CSPM-Interpreter library: An interpreter for CSPM
CSPM-ToProlog library: some modules specific for the ProB tool
dove library: The Dove verification language.
hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel
improve library: An imperative, verifiable programming language for high assurance applications.
opentheory library: The standard theory library
opentheory-bits library: Natural number to bit-list conversions
opentheory-byte library: Bytes
opentheory-primitive library: Haskell primitives used by OpenTheory packages
opentheory-probability library: Probability
sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.
sbvPlugin library: Formally prove properties of Haskell programs using SBV/SMT
SmtLib library: Library for parsing SMTLIB2
smtlib2 library: A type-safe interface to communicate with an SMT solver.
theoremquest library: A common library for TheoremQuest, a theorem proving game.
theoremquest-client program: A simple client for the TheoremQuest theorem proving game.
yices-painless library: An embedded language for programming the Yices SMT solver
z3 library and program: Bindings for the Z3 Theorem Prover

Fractals

3d-graphics-examples programs: Examples of 3D graphics programming with OpenGL

FRP

AFSM library: Arrowized functional state machines
Animas library: Updated version of Yampa: a library for programming hybrid systems.
artery library: A simple, arrow-based reactive programming
bot library: bots for functional reactive programming
broccoli library: Small library for interactive functional programs.
buster library: Almost but not quite entirely unlike FRP
buster-gtk library: Almost but not quite entirely unlike FRP
buster-network library: Almost but not quite entirely unlike FRP
DefendTheKing programs: A simple RTS game
dow program: Dungeons of Wor
drClickOn library: Monadic FRP
DysFRP library: dysFunctional Reactive Programming
DysFRP-Cairo library: dysFunctional Reactive Programming on Cairo
DysFRP-Craftwerk library: dysFunctional Reactive Programming on Craftwerk
elerea library: A minimalistic FRP library
elerea-examples programs: Example applications for Elerea
euphoria library: Dynamic network FRP with events and continuous values
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-frp library: Functional Reactive Programming core
grapefruit-records library: A record system for Functional Reactive Programming
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
helm library: A functionally reactive game engine.
machinecell library: Arrow based stream transducers
midair library: Hot-swappable FRP
Moe library and program: A FRP library based on signal functions.
netwire library and program: Functional reactive programming library
ordrea library: Push-pull implementation of discrete-time FRP
peakachu library: Experiemental library for composable interactive programs
reactive library: Push-pull functional reactive programming
reactive-bacon library: FRP (functional reactive programming) framework
reactive-banana library: Library for functional reactive programming (FRP).
reactive-banana-sdl2 library: Reactive Banana integration with SDL2
reactive-banana-threepenny library and programs: Examples for the reactive-banana library, using threepenny-gui.
reactive-banana-wx library and programs: Examples for the reactive-banana library, using wxHaskell.
reactive-fieldtrip library: Connect Reactive and FieldTrip
reactive-glut library: Connects Reactive and GLUT
reactive-thread library and program: Reactive programming via imperative threads
reactivity library: An alternate implementation of push-pull FRP.
reenact library: A reimplementation of the Reactive library.
reflex library: Higher-order Functional Reactive Programming
reflex-animation library: Continuous animations support for reflex
reflex-dom library: Functional Reactive Web Apps with Reflex
reflex-dom-contrib library: ...
reflex-gloss-scene library and programs: A simple scene-graph using reflex and gloss
reflex-orphans library: Useful missing instances for Reflex
reflex-transformers library: Collections and switchable Monad transformers for Reflex
rsagl-frp library: The RogueStar Animation and Graphics Library: Functional Reactive Programming
RxHaskell library: Reactive Extensions for Haskell
shine-varying library: FRP interface for shine using the varying package
sodium library: Sodium Reactive Programming (FRP) System
spice library: An FRP-based game engine written in Haskell.
tempus program: Interpreter for the FRP language Tempus
Updater library: Monadic FRP library based on stm
varying library and program: FRP through value streams and monadic splines.
wxFruit library and program: An implementation of Fruit using wxHaskell.
Yampa library: Library for programming hybrid systems.
Yampa-core library and programs: Library for programming hybrid systems.
yampa-glut library and program: Connects Yampa and GLUT
YFrob library: Yampa-based library for programming robots

Functions

flow library: Write more understandable Haskell.
poly-arity library: Tools for working with functions of undetermined arity
wrap library: Wrap a function's return value with another function

Functors

bifunctors library: Bifunctors
kan-extensions library: Kan extensions, Kan lifts, various forms of the Yoneda lemma, and (co)density (co)monads
representable-functors library: Representable functors
representable-tries library: Tries from representations of polynomial functors

Game

4Blocks program: A tetris-like game (works with GHC 6.8.3 and Gtk2hs 0.9.13)
abc-puzzle program: Generate instances of the ABC Logic Puzzle.
Advgame program: Lisperati's adventure game in Lisp translated to Haskell
Allure program: Near-future Sci-Fi roguelike and tactical squad game
antisplice library: An engine for text-based dungeons.
armada program: Space-based real time strategy game
astrds program: an incomplete 2d space game
babylon program: An implementation of a simple 2-player board game
battleships library and programs: A web-based implementation of battleships including an AI opponent.
bloxorz program: OpenGL Logic Game
blubber program: The blubber client; connects to the blubber server.
blubber-server library and program: The blubber server, serves blubber clients.
board-games library and program: Three games for inclusion in a web server
boomslang program: Boomshine clone
breakout program: A simple Breakout game implementation.
brians-brain program: A Haskell implementation of the Brian's Brain cellular automaton
call library and program: The call game engine
chesshs library: Simple library for validating chess moves and parsing PGN files
cuboid program: 3D Yampa/GLUT Puzzle Game
DAG-Tournament program: Real-Time Game Tournament Evaluator
darkplaces-demo library and program: Utility and parser for DarkPlaces demo files
darkplaces-rcon library: Darkplaces rcon client library
darkplaces-rcon-util library and program: Darplaces rcon utility
darkplaces-text library: Parser for darkplaces colorful text
DefendTheKing programs: A simple RTS game
dgs library: Haskell front-end for DGS' bot interface
dice library and program: Simplistic D&D style dice-rolling system.
dominion library and program: A simulator for the board game Dominion.
dow program: Dungeons of Wor
draw-poker library and programs: playing draw poker
edge program: Top view space combat arcade game
Eternal10Seconds program: A 2-D shooting game
falling-turnip program: Falling sand game/cellular automata simulation using regular parallel arrays.
fallingblocks program: A fun falling blocks game.
fen2s library and program: Converting a chess position from FEN notation to text
fixed-point library: Binary fixed-point arithmetic
fixed-point-vector library: Unbox instances for the fixed-point package
fixed-point-vector-space library: vector-space instances for the fixed-point package
foo program: Paper soccer, an OpenGL game.
frag program: A 3-D First Person Shooter Game
freekick2 programs: A soccer game
FunGEn library and programs: A lightweight, cross-platform, OpenGL/GLUT-based game engine.
fwgl library: Game engine
fwgl-glfw library: FWGL GLFW backend
fwgl-javascript library: FWGL GHCJS backend
gameclock program: Game clock that shows two analog clock faces
GeBoP program: Several games
gemstone library: A simple library of helpers for SDL+GL games.
GeneralTicTacToe program: A general TicTacToe game implementation.
gloss-game library: Gloss wrapper that simplifies writing games
goatee library: A monadic take on a 2,500-year-old board game - library.
goatee-gtk library and program: A monadic take on a 2,500-year-old board game - GTK+ UI.
gore-and-ash library: Core of FRP game engine called Gore&Ash
gore-and-ash-actor library: Gore&Ash engine extension that implements actor style of programming
gore-and-ash-async library: Core module for Gore&Ash engine that embeds async IO actions into game loop.
gore-and-ash-demo programs: Demonstration game for Gore&Ash game engine
gore-and-ash-glfw library: Core module for Gore&Ash engine for GLFW input events
gore-and-ash-logging library: Core module for gore-and-ash with logging utilities
gore-and-ash-network library: Core module for Gore&Ash engine with low level network API
gore-and-ash-sdl library: Gore&Ash core module for integration with SDL library
gridland library and program: Grid-based multimedia engine
h2048 library and programs: a haskell implementation of Game 2048
halma library and program: Library implementing Halma rules
Hangman program: The classic game of Hangman.
hangman program: Hangman implementation in Haskell written in two hours.
haskanoid program: A breakout game written in Yampa using SDL
haskell-in-space programs: 'Asteroids' arcade games.
haskell-spacegoo library: Client API for Rocket Scissor Spacegoo
Haskelloids program: A reproduction of the Atari 1979 classic "Asteroids"
haskellscrabble library: A scrabble library capturing the core game logic of scrabble.
haskmon library: A haskell wrapper for PokeAPI.co (www.pokeapi.co)
haverer library and program: Implementation of the rules of Love Letter
hback program: N-back memory game
HCard library: A library for implementing a Deck of Cards
hchesslib library: Chess library
hcube library and program: Virtual Rubik's cube of arbitrary size.
hetris program: Text Tetris
hfiar library and program: Four in a Row in Haskell!!
hfov library: Field-of-view calculation for low-resolution 2D raster grids.
HGamer3D-API library: Library to enable 3D game development for Haskell - API
HGamer3D-CAudio-Binding library: Library to enable 3D game development for Haskell - cAudio Bindings
HGamer3D-OIS-Binding library: Library to enable 3D game development for Haskell - OIS Bindings
hinvaders program: Space Invaders
Hipmunk library: A Haskell binding for Chipmunk.
HipmunkPlayground program: A playground for testing Hipmunk.
HODE library: Binding to libODE
hold-em library: An engine for Texas hold'em Poker
hoodie program: A small, toy roguelike
HPong program: A simple OpenGL Pong game based on GLFW
hpylos program: AI of Pylos game with GLUT interface.
Hricket program: A Cricket scoring application.
hricket program: A Cricket scoring application.
hs-pgms library and program: Programmer's Mine Sweeper in Haskell
hs2048 library and program: A 2048 clone in Haskell.
hsqml-demo-morris program: HsQML-based implementation of Nine Men's Morris
hsqml-morris program: HsQML-based implementation of Nine Men's Morris
hstzaar program: A two player abstract strategy game.
HTicTacToe program: An SDL tic-tac-toe game.
htiled library: Import from the Tiled map editor.
htzaar program: A two player abstract strategy game.
hyahtzee program: A Yahtzee game implementation in Haskell
intricacy programs: A game of competitive puzzle-design
ironforge library and program: A technical demo for Antisplice.
java-poker library and program: The etude of the Haskell programming
L-seed library and programs: Plant growing programming game
labyrinth library: A complicated turn-based game
labyrinth-server program: A complicated turn-based game - Web server
LambdaHack library and program: A game engine library for roguelike dungeon crawlers
layers-game program: A prototypical 2d platform game.
Level0 program: A Snake II clone written using SDL.
life program: Conway's Life cellular automaton
lostcities program: An implementation of an adictive two-player card game
macbeth-lib library and program: Macbeth - A beautiful and minimalistic FICS client
mage program: Rogue-like
mancala program: Simple mancala game.
marionetta program: A study of marionetta movements.
mastermind program: console mastermind decypher
MazesOfMonad program: Console-based Role Playing Game
midimory program: A Memory-like (Concentration, Pairs, ...) game for tones
mines program: Minesweeper simulation using neural networks
minesweeper program: Minesweeper game which is always solvable without guessing
misfortune library and programs: fortune-mod clone
Monadius program: 2-D arcade scroller
Monaris program: A simple tetris clone
netwire-input library: Input handling abstractions for netwire
netwire-input-glfw library and program: GLFW instance of netwire-input
Ninjas program: Ninja game
Nomyx program: A Nomic game in haskell
Nomyx-Core library: A Nomic game in haskell
Nomyx-Web library: Web gui for Nomyx
octane library and program: Parse Rocket League replays.
ois-input-manager library: wrapper for OIS input manager for use with hogre
PlayHangmanGame program: Play Hangman Game
PlayingCards library: Playing cards api
Pollutocracy program: An imaginary world
postgresql-simple-url library: Parse postgres:// url into ConnectInfo
QuadTree library: QuadTree library for Haskell, with lens support.
quoridor-hs library and program: A Quoridor implementation in Haskell
Raincat program: A puzzle game written in Haskell with a cat in lead role
Rasenschach program: Soccer simulation
reversi program: Text-only reversi (aka othelo) game
roguestar program: Sci-fi roguelike game. Client application.
roguestar-engine program: Sci-fi roguelike game. Backend.
roguestar-gl library: Sci-fi roguelike game. Client library.
roguestar-glut program: Sci-fi roguelike game. GLUT front-end.
scrabble-bot program: Scrabble play generation.
scroll program: scroll(6), a roguelike game
secret-santa program: Secret Santa game assigner using QR-Codes
setgame library and program: A console interface to the game of Set
SFML library: SFML bindings
showdown program: A simple gtk based Russian Roulette game.
Shu-thing program: A vector shooter game
snake-game library: Snake Game Using OpenGL
SoccerFun library and program: Football simulation framework for teaching functional programming
SoccerFunGL library and programs: OpenGL UI for the SoccerFun framework
SpaceInvaders program: Video game
SpacePrivateers program: Simple space pirate roguelike
spanout program: A breakout clone written in netwire and gloss
starrover2 program: Space simulation game
steambrowser program: List and launch steam games from the cli
sylvia program: Lambda calculus visualization
t3-client library: tic-tac-toe Rexports for client
t3-game library: tic-tac-toe core
t3-server library: tic-tac-toe server
table-tennis library: A table tennis game tracking engine
tateti-tateti program: Meta tic-tac-toe ncurses game.
TeaHS library: TeaHS Game Creation Library
tetris program: A 2-D clone of Tetris
theoremquest library: A common library for TheoremQuest, a theorem proving game.
theoremquest-client program: A simple client for the TheoremQuest theorem proving game.
Tic-Tac-Toe program: Tic Tac Toe in your command line!
tic-tac-toe program: Useful if reading "Why FP matters" by John Hughes
tictactoe3d library: 3D Tic-Tac-Toe game
Titim program: Game for Lounge Marmelade
topkata programs: OpenGL Arcade Game
Tournament library: Tournament related algorithms
turing-music program: Plays music generated by Turing machines with 5 states and 2 symbols
twisty library: Simulator of twisty puzzles à la Rubik's Cube
TypeClass program: Typing speed game
TypingTester program: Command Line Typing speed tester
Verba program: A solver for the WordBrain game
waddle library and programs: DOOM WAD file utilities.
werewolf library and program: A game engine for playing werewolf within an arbitrary chat client
werewolf-slack program: A chat interface for playing werewolf in Slack
wxAsteroids program: Try to avoid the asteroids with your space ship
wyvern program: An autoresponder for Dragon Go Server.
YACPong program: Yet Another Pong Clone using SDL.
yampa2048 program: 2048 game clone using Yampa/Gloss
ZMachine program: A Z-machine interpreter

Game Engine

ActionKid library and program: An easy-to-use video game framework for Haskell.
bogre-banana library and program
deterministic-game-engine library: Simple deterministic game engine
fwgl library: Game engine
fwgl-glfw library: FWGL GLFW backend
fwgl-javascript library: FWGL GHCJS backend
helm library: A functionally reactive game engine.
HGamer3D library: Toolset for the Haskell Game Programmer
HGamer3D-Audio library: Toolset for the Haskell Game Programmer - Audio Functionality
HGamer3D-Bullet-Binding library: Windows Game Engine for the Haskell Programmer - Bullet Bindings
HGamer3D-CEGUI-Binding library: A Toolset for the Haskell Game Programmer - CEGUI Bindings
HGamer3D-Common library: Toolset for the Haskell Game Programmer - Game Engine and Utilities
HGamer3D-Data library: Toolset for the Haskell Game Programmer - Data Definitions
HGamer3D-Enet-Binding library: Enet Binding for HGamer3D
HGamer3D-Graphics3D library: Toolset for the Haskell Game Programmer - 3D Graphics Functionality
HGamer3D-GUI library: GUI Functionality for HGamer3D
HGamer3D-InputSystem library: Joystick, Mouse and Keyboard Functionality for HGamer3D
HGamer3D-Network library: Networking Functionality for HGamer3D
HGamer3D-Ogre-Binding library: Ogre Binding for HGamer3D
HGamer3D-SDL2-Binding library: SDL2 Binding for HGamer3D
HGamer3D-SFML-Binding library: SFML Binding for HGamer3D
HGamer3D-WinEvent library: Windowing and Event Functionality for HGamer3D
HGamer3D-Wire library: Wire Functionality for HGamer3D
IrrHaskell library: Haskell FRP binding to the Irrlicht game engine.
LambdaHack library and program: A game engine library for roguelike dungeon crawlers
polar-configfile library: Fork of ConfigFile for Polar Game Engine
polar-shader library: High-level shader compiler for Polar Game Engine

Games

lifter program: A boulderdash-like game and solution validator

Genealogy

family-tree library: A family tree library for the Haskell programming language.

Generic

base-generics library: ...
HsTools library: Haskell helper functions
syb-extras library: Higher order versions of the Scrap Your Boilerplate classes

Generics

algebraic-classes library: Conversions between algebraic classes and F-algebras.
alloy library: Generic programming library
alloy-proxy-fd library: Some add-on instances for the Alloy library
Annotations library: Constructing, analyzing and destructing annotated trees
basic-sop library: Basic examples and functions for generics-sop
BiGUL library: The Bidirectional Generic Update Language
Capabilities library: Separate and contain effects of IO monad.
compdata library: Compositional Data Types
compdata-automata library: Tree automata on Compositional Data Types
compdata-dags library: Compositional Data Types on DAGs
compdata-param library: Parametric Compositional Data Types
compstrat library: Strategy combinators for compositional data types
comptrans library: Automatically converting ASTs into compositional data types
derive-enumerable library: Generic instances for enumerating complex data types
derive-IG library: Macro to derive instances for Instant-Generics using Template Haskell
emgm library: Extensible and Modular Generics for the Masses
fixplate library: Uniplate-style generic traversals for optionally annotated fixed-point types.
functorm library: Data.FunctorM (compatibility package)
gdiff-ig library: Generic diff for the instant-generics library
gdiff-th library: Generate gdiff GADTs and Instances.
generic-binary library: Generic Data.Binary derivation using GHC generics.
generic-church library: Automatically convert Generic instances to and from church representations
generic-deepseq library: Generic deep evaluation of data structures
generic-deriving library: Generic programming library for generalised deriving.
generic-maybe library: A generic version of Data.Maybe
GenericPretty library: A generic, derivable, haskell pretty printer.
generics-eot library: A library for generic programming that aims to be easy to understand
generics-sop library: Generic Programming using True Sums of Products
genifunctors library: Generate generalized fmap, foldMap and traverse
geniplate library: Use Template Haskell to generate Uniplate-like functions.
geniplate-mirror library: Use Template Haskell to generate Uniplate-like functions.
gpah program: Generic Programming Use in Hackage
guarded-rewriting library: Datatype-generic rewriting with preconditions
instant-aeson library: Generic Aeson instances through instant-generics
instant-bytes library: Generic Serial instances through instant-generics
instant-deepseq library: Generic NFData instances through instant-generics
instant-generics library: Generic programming library with a sum of products view
instant-hashable library: Generic Hashable instances through instant-generics
instant-zipper library: Heterogenous Zipper in Instant Generics
json-sop library: Generics JSON (de)serialization using generics-sop
lens library: Lenses, Folds and Traversals
lens-action library: Monadic Getters and Folds
lens-sop library: Computing lenses generically using generics-sop
ligd library: Lightweight Implementation of Generics and Dynamics
ListLike library: Generic support for list-like structures
listlike-instances library: Extra instances of the ListLike class
meta-misc library: Utility library providing miscellaneous meta-programming utilities.
multifocal library and program: Bidirectional Two-level Transformation of XML Schemas
multiplate library: Lightweight generic library for mutually recursive data types.
multiplate-simplified library: Shorter, more generic functions for Multiplate.
multirec library: Generic programming for families of recursive datatypes
multirec-alt-deriver library: Alternative multirec instances deriver
multirec-binary library: Generic Data.Binary instances using MultiRec.
one-liner library: Constraint-based generics
pointless-haskell library: Pointless Haskell library
pointless-lenses library: Pointless Lenses library
pointless-rewrite library: Pointless Rewrite library
pretty-sop library: A generic pretty-printer using generics-sop
projection library: Projection function for arbitrarily nested binary product types.
putlenses library: Put-based lens library
regular library: Generic programming library for regular datatypes.
regular-extras library: Additional functions for regular: arbitrary, coarbitrary, and binary get/put.
regular-web library: Generic programming for the web
reified-records library: Reify records to Maps and back again
RepLib library: Generic programming library with representation types
rewriting library: Generic rewriting library for regular datatypes.
sai-shape-syb library: Obtain homogeneous values from arbitrary values, transforming or culling data
shapely-data library: Generics using @(,)@ and @Either@, with algebraic operations and typed conversions
special-functors library: Control.Applicative, Data.Foldable, Data.Traversable (compatibility package)
spine library: Simple implementation of the generic spine view
Strafunski-StrategyLib library: Library for strategic programming
StrategyLib library
syb library: Scrap Your Boilerplate
syz library: Scrap Your Zippers
thorn library: Datatype Manipulation with Template Haskell
TYB library: Template Your Boilerplate - a Template Haskell version of SYB
unbound library: Generic support for programming with names and binders
unfoldable library: Class of data structures that can be unfolded.
uniplate library: Help writing simple, concise and fast generic operations.
xformat library: Extensible, type-safe formatting with scanf- and printf-like functions
yoko library: Generic Programming with Disbanded Data Types
zipper library: Generic zipper for families of recursive datatypes

Gentoo

fquery program: Installed package query tool for Gentoo Linux

Geography

geocode-google library: Geocoding using the Google Web API
geodetics library: Terrestrial coordinate systems and geodetic calculations.
handa-geodata library and programs: Geographic and Geometric Data
hills program: Generate STL models from SRTM elevation data.
osm-conduit library: Parse and operate on OSM data in efficient way

Geometry

cubicbezier library: Efficient manipulating of 2D cubic bezier curves.
handa-geodata library and programs: Geographic and Geometric Data
hgeometry library: Data types for geometric objects, geometric algorithms, and data structures.
hipe library: Support for reading and writing ipe7 files (http://ipe7.sourceforge.net)
nurbs library: NURBS
readshp library: Code for reading ESRI Shapefiles.
visibility library: Simple computation of visibility polygons.

GHC

CoreDump library: A GHC plugin for printing GHC's internal Core data structures.
error-analyze library: Parse ghc and cabal error messages and give their causes for easier resolution
ghc-datasize library: Determine the size of data structures in GHC's memory
ghc-dup library: Explicitly prevent sharing
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC
ghc-heap-view library: Extract the heap representation of Haskell values and thunks
ghc-man-completion program: Generate a bash completion from the GHC manpage
ghc-mod library and programs: Happy Haskell Programming
ghc-prim library: GHC primitives
ghc-vis library: Live visualization of data structures in GHCi
hackager program: Hackage testing tool
isevaluated library: Check whether a value has been evaluated
linux-perf library and programs: Read files generated by perf on Linux
packman library: Serialization library for GHC
vacuum library: Graph representation of the GHC heap
vacuum-graphviz library: A library for transforming vacuum graphs into GraphViz output

GIS Programs

terrahs library: A Haskell GIS Programming Environment

Git

git-embed library: Use TH to embed Git repo information.
gitlib-cmdline library: Gitlib repository backend that uses the git command-line tool.
gitlib-s3 library: Gitlib repository backend for storing Git objects in Amazon S3
gitson library: A document store library for Git + JSON.
hit-graph library: Use graph algorithms to access and manipulate Git repos

GitHub

github-types library: Type definitions for objects used by the GitHub v3 API
github-webhook-handler library: GitHub WebHook Handler
github-webhook-handler-snap library: GitHub WebHook Handler implementation for Snap

GiveYouAHead

GiveYouAHead library: to auto-do somethings
gyah-bin program: A binary version of GiveYouAHead

Google

gogol library: Comprehensive Google Services SDK.
gogol-adexchange-buyer library: Google Ad Exchange Buyer SDK.
gogol-adexchange-seller library: Google Ad Exchange Seller SDK.
gogol-admin-datatransfer library: Google Admin Data Transfer SDK.
gogol-admin-directory library: Google Admin Directory SDK.
gogol-admin-emailmigration library: Google Email Migration API v2 SDK.
gogol-admin-reports library: Google Admin Reports SDK.
gogol-adsense library: Google AdSense Management SDK.
gogol-adsense-host library: Google AdSense Host SDK.
gogol-affiliates library: Google Affiliate Network SDK.
gogol-analytics library: Google Analytics SDK.
gogol-android-enterprise library: Google Play EMM SDK.
gogol-android-publisher library: Google Play Developer SDK.
gogol-appengine library: Google App Engine Admin SDK.
gogol-apps-activity library: Google Apps Activity SDK.
gogol-apps-calendar library: Google Calendar SDK.
gogol-apps-licensing library: Google Enterprise License Manager SDK.
gogol-apps-reseller library: Google Enterprise Apps Reseller SDK.
gogol-apps-tasks library: Google Tasks SDK.
gogol-appstate library: Google App State SDK.
gogol-autoscaler library: Google Compute Engine Autoscaler SDK.
gogol-bigquery library: Google BigQuery SDK.
gogol-billing library: Google Cloud Billing SDK.
gogol-blogger library: Google Blogger SDK.
gogol-books library: Google Books SDK.
gogol-civicinfo library: Google Civic Information SDK.
gogol-classroom library: Google Classroom SDK.
gogol-cloudtrace library: Google Cloud Trace SDK.
gogol-compute library: Google Compute Engine SDK.
gogol-container library: Google Container Engine SDK.
gogol-core library: Core data types and functionality for Gogol libraries.
gogol-customsearch library: Google CustomSearch SDK.
gogol-dataflow library: Google Dataflow SDK.
gogol-datastore library: Google Cloud Datastore SDK.
gogol-debugger library: Google Cloud Debugger SDK.
gogol-deploymentmanager library: Google Cloud Deployment Manager SDK.
gogol-dfareporting library: Google DCM/DFA Reporting And Trafficking SDK.
gogol-discovery library: Google APIs Discovery Service SDK.
gogol-dns library: Google Cloud DNS SDK.
gogol-doubleclick-bids library: Google DoubleClick Bid Manager SDK.
gogol-doubleclick-search library: Google DoubleClick Search SDK.
gogol-drive library: Google Drive SDK.
gogol-fitness library: Google Fitness SDK.
gogol-fonts library: Google Fonts Developer SDK.
gogol-freebasesearch library: Google Freebase Search SDK.
gogol-fusiontables library: Google Fusion Tables SDK.
gogol-games library: Google Play Game Services SDK.
gogol-games-configuration library: Google Play Game Services Publishing SDK.
gogol-games-management library: Google Play Game Services Management SDK.
gogol-genomics library: Google Genomics SDK.
gogol-gmail library: Google Gmail SDK.
gogol-groups-migration library: Google Groups Migration SDK.
gogol-groups-settings library: Google Groups Settings SDK.
gogol-identity-toolkit library: Google Identity Toolkit SDK.
gogol-latencytest library: Google Cloud Network Performance Monitoring SDK.
gogol-logging library: Google Cloud Logging SDK.
gogol-maps-coordinate library: Google Maps Coordinate SDK.
gogol-maps-engine library: Google Maps Engine SDK.
gogol-mirror library: Google Mirror SDK.
gogol-monitoring library: Google Cloud Monitoring SDK.
gogol-oauth2 library: Google OAuth2 SDK.
gogol-pagespeed library: Google PageSpeed Insights SDK.
gogol-partners library: Google Partners SDK.
gogol-play-moviespartner library: Google Play Movies Partner SDK.
gogol-plus library: Google + SDK.
gogol-plus-domains library: Google + Domains SDK.
gogol-prediction library: Google Prediction SDK.
gogol-proximitybeacon library: Google Proximity Beacon SDK.
gogol-pubsub library: Google Cloud Pub/Sub SDK.
gogol-qpxexpress library: Google QPX Express SDK.
gogol-replicapool library: Google Compute Engine Instance Group Manager SDK.
gogol-replicapool-updater library: Google Compute Engine Instance Group Updater SDK.
gogol-resourcemanager library: Google Cloud Resource Manager SDK.
gogol-resourceviews library: Google Compute Engine Instance Groups SDK.
gogol-shopping-content library: Google Content API for Shopping SDK.
gogol-siteverification library: Google Site Verification SDK.
gogol-spectrum library: Google Spectrum Database SDK.
gogol-sqladmin library: Google Cloud SQL Administration SDK.
gogol-storage library: Google Cloud Storage JSON SDK.
gogol-storage-transfer library: Google Storage Transfer SDK.
gogol-tagmanager library: Google Tag Manager SDK.
gogol-taskqueue library: Google TaskQueue SDK.
gogol-translate library: Google Translate SDK.
gogol-urlshortener library: Google URL Shortener SDK.
gogol-useraccounts library: Google Cloud User Accounts SDK.
gogol-webmaster-tools library: Google Webmaster Tools SDK.
gogol-youtube library: Google YouTube Data SDK.
gogol-youtube-analytics library: Google YouTube Analytics SDK.
gogol-youtube-reporting library: Google YouTube Reporting SDK.
google-cloud library: Client for the Google Cloud APIs

GPU

OpenCL library: Haskell high-level wrapper for OpenCL
shady-gen library: Functional GPU programming - DSEL & compiler

Graph

gbu library: planar graph embedding into a plane

Graphics

3d-graphics-examples programs: Examples of 3D graphics programming with OpenGL
3dmodels library: 3D model parsers
AC-Colour library: Efficient RGB colour types.
AC-EasyRaster-GTK library: GTK+ pixel plotting.
AC-PPM library: Trivial package for writing PPM images.
AC-Vector library: Efficient geometric vectors and transformations.
AC-Vector-Fancy library: Fancy type-system stuff for AC-Vector
ansigraph library: Terminal-based graphing via ANSI and Unicode
aosd library: Bindings to libaosd, a library for Cairo-based on-screen displays
assimp library: The Assimp asset import library
Attrac program: Visualisation of Strange Attractors in 3-Dimensions
avatar-generator program: A simple random avatar icon generator
awesomium library: High-level Awesomium bindings.
awesomium-glut library: Utilities for using Awesomium with GLUT.
awesomium-raw library: Low-level Awesomium bindings.
bacteria program: braindead utility to compose Xinerama backgrounds
barchart library and program: Creating Bar Charts in Haskell
barcodes-code128 library: Generate Code 128 barcodes as PDFs
barrier library and programs: Shield.io style badge generator
billeksah-forms library: Leksah library
billeksah-pane library: Leksah library
bindings-GLFW library: Low-level bindings to GLFW OpenGL library
bindings-linux-videodev2 library: bindings to Video For Linux Two (v4l2) kernel interfaces
bindings-potrace library: Low-level bindings to the potrace bitmap tracing library
bitmap library: A library for handling and manipulating bitmaps (rectangular pixel arrays).
bitmap-opengl library: OpenGL support for Data.Bitmap.
bitmaps library: Bitmap library
blank-canvas library: HTML5 Canvas Graphics Library
blaze-svg library: SVG combinator library
Blobs library and program: Diagram editor
brick library and programs: A declarative terminal user interface library
butterflies library and program: butterfly tilings
cairo library: Binding to the Cairo library.
cal3d library: Haskell binding to the Cal3D animation library.
cal3d-examples programs: Examples for the Cal3d animation library.
cal3d-opengl library: OpenGL rendering for the Cal3D animation library
camh program: Image converter to 256-colored text.
caramia library and programs: High-level OpenGL bindings
carettah programs: A presentation tool written with Haskell.
cellrenderer-cairo library: Cairo-based CellRenderer
chalkboard library and programs: Combinators for building and processing 2D images.
chalkboard-viewer library: OpenGL based viewer for chalkboard rendered images.
Chart library: A library for generating 2D Charts and Plots
Chart-cairo library: Cairo backend for Charts.
Chart-diagrams library: Diagrams backend for Charts.
Chart-gtk library: Utility functions for using the chart library with GTK
chart-histogram library: Easily render histograms with Chart
Chart-simple library: ...
Chitra program: A platform independent mechanism to render graphics using vnc.
clay library: CSS preprocessor as embedded Haskell.
collada-output library and program: Generate animated 3d objects in COLLADA
collada-types library: Data exchange between graphic applications
color-counter library and program: Count colors in images
colour library: A model for human colour/color perception
craftwerk library and programs: 2D graphics library with integrated TikZ output.
craftwerk-cairo library: Cairo backend for Craftwerk.
craftwerk-gtk library and program: Gtk UI for Craftwerk.
crocodile program: An offline renderer supporting ray tracing and photon mapping
cubicbezier library: Efficient manipulating of 2D cubic bezier curves.
curves library: Library for drawing curve based images.
CV library: OpenCV based machine vision library
cv-combinators library and program: Functional Combinators for Computer Vision
d3d11binding library and programs: A raw binding for the directX 11
d3js library: Declarative visualization on a web browser with DSL approach.
deepzoom library: A DeepZoom image slicer. Only known to work on 32bit Linux
definitive-graphics library: A definitive package allowing you to open windows, ...
delaunay library: Build a Delaunay triangulation of a set of points
derivation-trees library: Typeset Derivation Trees via MetaPost
dia-base library: An EDSL for teaching Haskell with diagrams - data types
dia-functions library: An EDSL for teaching Haskell with diagrams - functions
diagrams library: Embedded domain-specific language for declarative vector graphics
diagrams-builder library and programs: hint-based build service for the diagrams graphics EDSL.
diagrams-cairo library: Cairo backend for diagrams drawing EDSL
diagrams-canvas library: HTML5 canvas backend for diagrams drawing EDSL
diagrams-contrib library: Collection of user contributions to diagrams EDSL
diagrams-core library: Core libraries for diagrams EDSL
diagrams-graphviz library: Graph layout and drawing with GrahpViz and diagrams
diagrams-gtk library: Backend for rendering diagrams directly to GTK windows
diagrams-haddock library and program: Preprocessor for embedding diagrams in Haddock documentation
diagrams-hsqml library: HsQML (Qt5) backend for Diagrams
diagrams-html5 library: HTML5 canvas backend for diagrams drawing EDSL
diagrams-lib library: Embedded domain-specific language for declarative graphics
diagrams-pdf library: PDF backend for diagrams drawing EDSL
diagrams-pgf library: PGF backend for diagrams drawing EDSL.
diagrams-postscript library: Postscript backend for diagrams drawing EDSL
diagrams-qrcode library: Draw QR codes to SVG, PNG, PDF or PS files.
diagrams-rasterific library: Rasterific backend for diagrams.
diagrams-reflex library: reflex backend for diagrams drawing EDSL.
diagrams-rubiks-cube library: Library for drawing the Rubik's Cube.
diagrams-svg library: SVG backend for diagrams drawing EDSL.
diagrams-tikz library: TikZ backend for diagrams drawing EDSL
diagrams-wx library and program: Backend for rendering diagrams in wxWidgets
dot2graphml program: Converter from GraphViz .dot format to yEd GraphML
dvi-processing library: Read/write DVI and TFM file
dx9base library: Backend for a binding to the Microsoft DirectX 9 API.
dx9d3d library: A binding to the Microsoft DirectX 9 API.
dx9d3dx library: A binding to the Microsoft DirectX 9 D3DX API.
dynamic-graph library: Draw and update graphs in real time with OpenGL
dynamic-plot library: Interactive diagram windows
easyplot library: A tiny plotting library, utilizes gnuplot for plotting.
easyrender library: User-friendly creation of EPS, PostScript, and PDF files
explore program: Experimental Plot data Reconstructor
FieldTrip library: Functional 3D
fig library: Manipulation of FIG files
fltkhs library and programs: FLTK bindings
fltkhs-demos programs: FLTKHS demos. Please scroll to the bottom for more information.
fltkhs-fluid-demos programs: Fltkhs Fluid Demos
fltkhs-fluid-examples programs: Fltkhs Fluid Examples
fltkhs-hello-world program: Fltkhs template project
font-opengl-basic4x6 library and program: Basic4x6 font for OpenGL
FontyFruity library: A true type file format loader
fractal program: Draw Newton, Julia and Mandelbrot fractals
FractalArt program: Generates colorful wallpapers
Fractaler program
free-game library: Create games for free
freenect library: Interface to the Kinect device.
freetype-simple library: Single line text rendering for OpenGL ES
freetype2 library and program: Haskell binding for FreeType 2 library
FreeTypeGL library and program: Loadable texture fonts for OpenGL.
friday library: A functional image processing library for Haskell.
friday-devil library: Uses the DevIL C library to read and write images from and to files and memory buffers.
friday-scale-dct library and program: Scale Friday images with DCT
FTGL library: Portable TrueType font rendering for OpenGL using the Freetype2 library
FTGL-bytestring library: Portable TrueType font rendering for OpenGL using the Freetype2 library
funcmp library: Functional MetaPost
gd library: A Haskell binding to a subset of the GD graphics library
gelatin library and program: An experimental real time renderer.
ghci-diagrams library: Display simple diagrams from ghci
Gifcurry library and programs: Create animated GIFs, overlaid with optional text, from video files.
gl library: Complete OpenGL raw bindings
gl-capture library: simple image capture from OpenGL
glade library: Binding to the glade library.
glapp library and program: An OpenGL micro framework.
GLFW library: A Haskell binding for GLFW
GLFW-b library: Bindings to GLFW OpenGL library
GLFW-b-demo program: GLFW-b demo
GLFW-OGL library: A binding for GLFW (OGL)
GLFW-task library: GLFW utility functions to use together with monad-task.
GLHUI library: Open OpenGL context windows in X11 with libX11
glintcollider program: A simple ray tracer in an early stage of development.
GLMatrix library: Utilities for working with OpenGL matrices
glome-hs library and program: ray tracer
GlomeTrace library: Ray Tracing Library
GlomeVec library: Simple 3D vector library
GlomeView program: SDL Frontend for Glome ray tracer
gloss library: Painless 2D vector graphics, animations and simulations.
gloss-accelerate library: Extras to interface Gloss and Accelerate
gloss-algorithms library: Data structures and algorithms for working with 2D graphics.
gloss-banana library: An Interface for gloss in terms of a reactive-banana Behavior.
gloss-devil library: Display images in Gloss using libdevil for decoding
gloss-examples programs: Examples using the gloss library
gloss-game library: Gloss wrapper that simplifies writing games
gloss-juicy library and program: Load any image supported by Juicy.Pixels in your gloss application
gloss-raster library: Parallel rendering of raster images.
gloss-raster-accelerate library: Parallel rendering of raster images using Accelerate
gloss-rendering library: Gloss picture data types and rendering functions.
gloss-sodium library: A Sodium interface to the Gloss drawing package.
GLURaw library: A raw binding for the OpenGL graphics system
GLUT library and programs: A binding for the OpenGL Utility Toolkit
GLUtil library: Miscellaneous OpenGL utilities.
gmndl program: Mandelbrot Set explorer using GTK
gnuplot library and program: 2D and 3D plots using gnuplot
GoogleChart library: Generate web-based charts using the Google Chart API
GPipe library: Typesafe functional GPU graphics programming
GPipe-Collada library: Load GPipe meshes from Collada files
GPipe-Examples programs: Examples for the GPipes package
GPipe-GLFW library: GLFW OpenGL context creation for GPipe
GPipe-TextureLoad library: Load GPipe textures from filesystem
gpolyline library: Pure module for encoding/decoding Google Polyline
graph-rewriting-gl library: OpenGL interface for interactive port graph rewriting
graph-rewriting-layout library: Force-directed node placement intended for incremental graph drawing
graph-rewriting-strategies library: Evaluation strategies for port-graph rewriting systems
graphics-drawingcombinators library and program: A functional interface to 2D drawing in OpenGL
graphics-formats-collada library: Load 3D geometry in the COLLADA format
graphicsFormats library: Classes for renderable objects.
graphicstools library and program: Tools for creating graphical UIs, based on wxHaskell.
graphviz library and program: Bindings to Graphviz for graph visualisation.
gruff library and program: fractal explorer GUI using the ruff library
gruff-examples programs: Mandelbrot Set examples using ruff and gruff
gtk library: Binding to the Gtk+ graphical user interface library.
gtk-helpers library: A collection of auxiliary operations and widgets related to Gtk
gtk-jsinput library: A simple custom form widget for gtk which allows inputing of JSON values
gtk-largeTreeStore library: Large TreeStore support for gtk2hs
gtk-mac-integration library: Bindings for the Gtk/OS X integration library.
gtk-serialized-event library: GTK+ Serialized event.
gtk-simple-list-view library: ...
gtk-toggle-button-list library: ...
gtk-toy library: Convenient Gtk canvas with mouse and keyboard input.
gtk-traymanager library: A wrapper around the eggtraymanager library for Linux system trays
gtk2hs-hello program: Gtk2Hs Hello World, an example package
gtk3 library and programs: Binding to the Gtk+ 3 graphical user interface library
gtk3-mac-integration library: Bindings for the Gtk/OS X integration library.
gtkglext library: Binding to the GTK+ OpenGL Extension
gtkimageview library: Binding to the GtkImageView library.
gtksourceview2 library: Binding to the GtkSourceView library.
gtksourceview3 library: Binding to the GtkSourceView library.
haha library and program: A simple library for creating animated ascii art on ANSI terminals.
handa-opengl library: Utility functions for OpenGL and GLUT
happindicator library: Binding to the appindicator library.
haskell-pdf-presenter program: Tool for presenting PDF-based presentations.
haskell-plot library: A library for generating 2D plots painlessly.
haskgame library: Haskell game library.
Hate library and programs: A small 2D game framework.
hayland library and program: Haskell bindings for the C Wayland library.
HDRUtils library: Utilities for reading, manipulating, and writing HDR images
hevolisa program: Genetic Mona Lisa problem in Haskell
hevolisa-dph program: Genetic Mona Lisa problem in Haskell - using Data Parallel Haskell
hexif library: Reading Exif data form a JPEG file with Haskell
hfractal program: OpenGL fractal renderer
HGamer3D-Ogre-Binding library: Ogre Binding for HGamer3D
HGamer3D-SFML-Binding library: SFML Binding for HGamer3D
HGL library: A simple graphics library based on X11 or Win32
hgl-example program: Various animations generated using HGL
hierarchical-clustering-diagrams library: Draw diagrams of dendrograms made by hierarchical-clustering.
Hieroglyph library: Purely functional 2D graphics for visualization.
himg library and program: Simple gtk2hs image viewer. Point it at an image and fire away.
hip library: Haskell Image Processing (HIP) Library.
hls library: Haskell Lindenmayer Systems
hogre library: Haskell binding to a subset of OGRE
hogre-examples programs: Examples for using Hogre.
honi library: OpenNI 2 binding
hoodle-render library: Hoodle file renderer
HOpenCV library and program: A binding for the OpenCV computer vision library
HPDF library: Generation of PDF documents
HPlot library and program: A minimal monadic PLplot interface for Haskell
hps library and program: Haskell Postscript
hps-cairo library and programs: Cairo rendering for the haskell postscript library
HRay program: Haskell raytracer
HROOT library: Haskell binding to ROOT RooFit modules
HROOT-core library: Haskell binding to ROOT Core modules
HROOT-graf library: Haskell binding to ROOT Graf modules
HROOT-hist library: Haskell binding to ROOT Hist modules
HROOT-io library: Haskell binding to ROOT IO modules
HROOT-math library: Haskell binding to ROOT Math modules
hs-captcha library: Generate images suitable for use as CAPTCHAs in online web-form security.
hs-gchart library: Haskell wrapper for the Google Chart API
hsexif library: EXIF handling library in pure Haskell
HsHaruPDF library: Haskell binding to libharu (http://libharu.sourceforge.net/)
hsmagick library: FFI bindings for the GraphicsMagick library
hsparklines library: Sparklines for Haskell
hsqml library: Haskell binding for Qt Quick
hsqml-datamodel library: HsQML (Qt5) data model.
hsqml-datamodel-vinyl library: HsQML DataModel instances for Vinyl Rec.
hsqml-demo-morris program: HsQML-based implementation of Nine Men's Morris
hsqml-demo-notes programs: Sticky notes example program implemented in HsQML
hsqml-demo-samples programs: HsQML sample programs
hsqml-morris program: HsQML-based implementation of Nine Men's Morris
HTicTacToe program: An SDL tic-tac-toe game.
hubigraph library: A haskell wrap for Ubigraph
hylogen library and program: an EDSL for live-coding fragment shaders
IcoGrid library: Library for generating grids of hexagons and pentagons mapped to a sphere.
IFS library and program: Iterated Function System generation for Haskell
ige-mac-integration library: Bindings for the Gtk/OS X integration library.
image-type library: Determine the type of an image by reading the first bytes.
imagefilters library: Image Filters (contrast, brightness, gaussian blur, etc)
imagemagick library and programs: bindings to imagemagick library
imagesize-conduit library: Determine the size of some common image formats.
Imlib library
implicit library and program: Math-inspired programmatic 2&3D CAD: CSG, bevels, and shells; gcode export..
integration library: Fast robust numeric integration via tanh-sinh quadrature
internetmarke program: Shell command for constructing custom stamps for German Post
IrrHaskell library: Haskell FRP binding to the Irrlicht game engine.
isiz program: A program to show the size of image and whether suitable for wallpaper.
jort program: JP's own ray tracer
jpeg library: A library for decoding JPEG files written in pure Haskell
JuicyPixels library: Picture loading/serialization (in png, jpeg, bitmap, gif, tga, tiff and radiance)
JuicyPixels-canvas library: Functions for drawing lines, squares and so on pixel by pixel
JuicyPixels-repa library: Convenience functions to obtain array representations of images.
KdTree library and program: KdTree, for efficient search in K-dimensional point clouds.
ktx library: A binding for libktx from Khronos
lambda-canvas library: Educational drawing canvas for FP explorers.
lambdacube-bullet library: Example for combining LambdaCube and Bullet
lambdacube-compiler library and programs: LambdaCube 3D is a DSL to program GPUs
lambdacube-core library: LambdaCube 3D IR
lambdacube-edsl library: LambdaCube 3D EDSL definition
lambdacube-engine library: 3D rendering engine written entirely in Haskell
lambdacube-examples programs: Examples for LambdaCube
lambdacube-gl library and programs: OpenGL 3.3 Core Profile backend for LambdaCube 3D
lambdacube-ir library: LambdaCube 3D intermediate representation of 3D graphics pipelines
lambdacube-samples programs: Samples for LambdaCube 3D
language-glsl library and program: GLSL abstract syntax tree, parser, and pretty-printer
linear-opengl library: Isomorphisms between linear and OpenGL types
lowgl library: Basic gl wrapper and reference
lp-diagrams library: An EDSL for diagrams based based on linear constraints
lp-diagrams-svg library and program: SVG Backend for lp-diagrams
lucid-svg library: DSL for SVG using lucid for HTML
lui library: Purely FunctionaL User Interface
luminance library: Type-safe, type-level and stateless graphics framework
luminance-samples programs: Luminance samples
mandulia program: A zooming visualisation of the Mandelbrot Set as many Julia Sets.
mcmaster-gloss-examples programs
Michelangelo library: OpenGL for dummies
minimung program: Shows how to run grabber on Mac OS X
mosaico-lib library: Generación interactiva de mosaicos
nanovg library and program: Haskell bindings for nanovg
nehe-tuts programs: Port of the NeHe OpenGL tutorials to Haskell.
netpbm library: Loading PBM, PGM, PPM image files
Noise library: A Haskell coherent noise generator based on libnoise
not-gloss library: Painless 3D graphics, no affiliation with gloss
not-gloss-examples programs: examples for not-gloss
null-canvas library: HTML5 Canvas Graphics Library - forked Blank Canvas
nymphaea program: An interactive GUI for manipulating L-systems
obj library: Reads and writes obj models.
oculus library: Oculus Rift ffi providing head tracking data
off-simple library: A parser for simplified-syntax OFF files
OGL library: A context aware binding for the OpenGL graphics system
ois-input-manager library: wrapper for OIS input manager for use with hogre
OpenCL library: Haskell high-level wrapper for OpenCL
OpenCLRaw library: The OpenCL Standard for heterogenous data-parallel computing
OpenGL library: A binding for the OpenGL graphics system
opengl-dlp-stereo library and program: Library and example for using DLP stereo in OpenGL
opengl-spacenavigator library and program: Library and example for using a SpaceNavigator-compatible 3-D mouse with OpenGL
OpenGLCheck library: Quickcheck instances for various data structures.
opengles library and programs: Functional interface for OpenGL 4.1+ and OpenGL ES 2.0+
OpenGLRaw library: A raw binding for the OpenGL graphics system
OpenGLRaw21 library: The intersection of OpenGL 2.1 and OpenGL 3.1 Core
OpenSCAD library: ADT wrapper and renderer for OpenSCAD models.
OpenVG library: OpenVG (ShivaVG-0.2.1) binding
OpenVGRaw library: Raw binding to OpenVG (ShivaVG-0.2.1 implementation).
pango library: Binding to the Pango text rendering engine.
patch-image programs: Compose a big image from overlapping parts
pcd-loader library and program: PCD file loader.
pgm library: Pure Haskell implementation of PGM image format
phraskell program: A fractal viewer.
plot library: A plotting library, exportable as eps/pdf/svg/png or renderable with gtk
plot-gtk library: GTK plots and interaction with GHCi
plot-gtk3 library: GTK3 plots and interaction with GHCi
Plot-ho-matic library and programs: Real-time line plotter for generic data
plotfont library: Plotter-like fonts i.e. a series of straight lines which make letter shapes.
ply-loader library and program: PLY file loader.
pnm library: PNM image format header parsing and pretty printing
poppler library: Binding to the Poppler.
potrace library: Trace bitmap images to paths using potrace
potrace-diagrams library: Potrace bindings for the diagrams library
printxosd program: Simple tool to display some text on an on-screen display
prizm library: Compute with colors and differenct color spaces
probability library: Probabilistic Functional Programming
processing library: Web graphic applications with processing.js.
propane library: Functional synthesis of images and animations
puzzle-draw library and program: Creating graphics for pencil puzzles.
puzzle-draw-cmdline program: Creating graphics for pencil puzzles, command line tools.
qt library: Qt bindings
QuickPlot library and program: Quick and easy data visualization with Haskell
Rasterific library: A pure haskell drawing engine.
rasterific-svg library and program: SVG renderer based on Rasterific.
reactive-banana-sdl library: Reactive Banana bindings for SDL
reactive-banana-sdl2 library: Reactive Banana integration with SDL2
reactive-fieldtrip library: Connect Reactive and FieldTrip
reactive-glut library: Connects Reactive and GLUT
record-gl library: Utilities for working with OpenGL's GLSL shading language and Nikita Volkov's "Record"s.
reflex-gloss library: An reflex interface for gloss.
renderable library: An API for managing renderable resources.
repa-v4l2 library and program: Provides high-level access to webcams.
rhythm-game-tutorial programs: Haskell rhythm game tutorial
robot library: Simulate keyboard and mouse events
rsagl library: The RogueStar Animation and Graphics Library
scaleimage program: Scale an image to a new geometry
scenegraph library: Scene Graph
sdl2 library and programs: Both high- and low-level bindings to the SDL library (version 2.0.3).
sdl2-cairo library and program: Render with Cairo on SDL textures. Includes optional convenience drawing API.
sdl2-cairo-image library: An image loading and rendering library for sdl2 / sdl2-cairo
sdl2-compositor library and programs: image compositing with sdl2 - declarative style
sdl2-image library: Haskell binding to sdl2-image.
servant-JuicyPixels library and program: Servant support for JuicyPixels
SFML-control library: Higher level library on top of SFML
SFont library: SFont SDL Bitmap Fonts
SGdemo program: An example of using the SG and OpenGL libraries
shady-graphics library: Functional GPU programming - DSEL & compiler
shine library: Declarative graphics for the browser using GHCJS
shine-varying library: FRP interface for shine using the varying package
simple-firewire library: Simplified interface for firewire cameras
SimpleGL library: A Simple Graphics Library from the SimpleH framework.
Slides library: Generate slides from Haskell code
smallpt-hs program: A Haskell port of the smallpt path tracer.
soegtk library: GUI functions as used in the book "The Haskell School of Expression".
splines library: B-Splines, other splines, and NURBS.
splot program: A tool for visualizing the lifecycle of many concurrent multi-staged processes.
static-canvas library: DSL to generate HTML5 Canvas javascript.
stb-image library: A wrapper around Sean Barrett's JPEG/PNG decoder
stb-truetype library: A wrapper around Sean Barrett's TrueType rasterizer library.
STL library: STL 3D geometry format parsing and pretty-printing
streaming-png library and program: Perfectly streaming PNG image decoding
stunts program: A revival of the classic game Stunts (LambdaCube tech demo)
svg-builder library: DSL for building SVG.
svg-tree library: SVG file loader and serializer
svgcairo library: Binding to the libsvg-cairo library.
SVGFonts library: Fonts from the SVG-Font format
SVGPath library: Parsing the path command of SVG
svgutils library and program: Helper functions for dealing with SVG files
testpattern program: Display a monitor test pattern
tga library: Reading and writing of tga image files
Thingie library: Purely functional 2D drawing
thumbnail library: generate thumbnail image
thumbnail-plus library: Generate thumbnails easily and safely.
timeplot program: A tool for visualizing time series from log files.
treemap-html library: Generates HTML for Data.Tree as TreeMap
treemap-html-tools library and programs: Treemap related commands for producing foldable TreeMap HTML.
TrendGraph library: A simple trend Graph script
triangulation library: triangulation of polygons
tsp-viz program: Real time TSP tour visualization.
twentefp-eventloop-graphics library: Used as Lab Assignments Environment at the University of Twente
UTFTConverter library and program: Processing popular picture formats into .c or .raw format in RGB565
uuagc-diagrams library: Utility for drawing attribute grammar pictures with the diagrams package
v4l2 library: interface to Video For Linux Two (V4L2)
v4l2-examples programs: video for linux two examples
Vec-OpenGLRaw library: Instances and functions to interoperate Vec and OpenGL.
Vec-Transform library: This package is obsolete
vect library: A low-dimensional linear algebra library, tailored to computer graphics.
vect-opengl library: OpenGL support for the `vect' low-dimensional linear algebra library.
vector-space-opengl library: Instances of vector-space classes for OpenGL types
vinyl-gl library: Utilities for working with OpenGL's GLSL shading language and vinyl records.
vte library: Binding to the VTE library.
vtegtk3 library: Binding to the VTE library.
vty-menu library and program: A lib for displaying a menu and getting a selection using VTY
Vulkan library: A binding for the Vulkan API
vulkan library: Bindings to the Vulkan graphics API.
WaveFront library: Parsers and utilities for the OBJ WaveFront 3D model format
webkit library: Binding to the Webkit library.
webkitgtk3 library: Binding to the Webkit library.
Win32 library: A binding to part of the Win32 library
Win32-extras library: Provides missing Win32 API
wumpus-basic library: Basic objects and system code built on Wumpus-Core.
wumpus-core library: Pure Haskell PostScript and SVG generation.
wumpus-drawing library: High-level drawing objects built on Wumpus-Basic.
wumpus-microprint library: Microprints - "greek-text" pictures.
wumpus-tree library: Drawing trees
X11 library: A binding to the X11 graphics library
X11-extras library: Missing bindings to the X11 graphics library
X11-rm library: A binding to the resource management functions missing from X11.
X11-xdamage library: A binding to the Xdamage X11 extension library
X11-xfixes library: A binding to the Xfixes X11 extension library
X11-xft library: Bindings to the Xft, X Free Type interface library, and some Xrender parts
x11-xim library: A binding to the xim of X11 graphics library
x11-xinput library: Haskell FFI bindings for X11 XInput library (-lXi)
X11-xshape library: A binding to the Xshape X11 extension library
Xauth library: A binding to the X11 authentication library
xbattbar program: Simple battery indicator
xdot library and program: Parse Graphviz xdot files and interactively view them using GTK and Cairo
xhb library: X Haskell Bindings
xhb-atom-cache library: Atom cache for XHB
xhb-ewmh library: EWMH utilities for XHB
xosd library: A binding to the X on-screen display
xournal-render library: Xournal file renderer
xtest library: Thin FFI bindings to X11 XTest library
yampa-canvas library and program: blank-canvas frontend for Yampa
yampa-glfw library and program: Connects GLFW-b (GLFW 3+) with the Yampa FRP library
yampa-glut library and program: Connects Yampa and GLUT
yarr library: Yet another array library
yarr-image-io library: Image IO for Yarr library
yesod-media-simple library: Simple display of media types, served by yesod
yjsvg library: make SVG string from Haskell data
zsh-battery program: Ascii bars representing battery status

Graphs

dataflow library and program: Generate Graphviz documents from a Haskell representation.
dom-lt library: The Lengauer-Tarjan graph dominators algorithm.
fgl library: Martin Erwig's Functional Graph Library
fgl-arbitrary library: QuickCheck support for fgl
fgl-extras-decompositions library: Graph decomposition algorithms
fgl-visualize library: Convert FGL graphs to dot (graphviz) files
graph-generators library and program: Functions for generating structured or random FGL graphs
graph-matchings library: An implementation of algorithms for matchings in graphs
graph-rewriting library: Monadic graph rewriting of hypergraphs with ports and multiedges
graph-rewriting-cl program: Interactive graph rewriting system implementing various well-known combinators
graph-rewriting-gl library: OpenGL interface for interactive port graph rewriting
graph-rewriting-layout library: Force-directed node placement intended for incremental graph drawing
graph-rewriting-strategies library: Evaluation strategies for port-graph rewriting systems
graph-utils library: A simple wrapper & quasi quoter for fgl.
graph-wrapper library: A wrapper around the standard Data.Graph with a less awkward interface
Graphalyze library: Graph-Theoretic Analysis library.
graphs library: A simple monadic graph library
graphviz library and program: Bindings to Graphviz for graph visualisation.
hit-graph library: Use graph algorithms to access and manipulate Git repos
igraph library: Bindings to the igraph C library.
maxsharing program: Maximal sharing of terms in the lambda calculus with letrec
metamorphic library: metamorphisms: ana . cata or understanding folds and unfolds
planar-graph library: A representation of planar graphs
unordered-graphs library: Graph library using unordered-containers
xdot library and program: Parse Graphviz xdot files and interactively view them using GTK and Cairo

Groundhog

groundhog-converters library: Extended Converter Library for groundhog embedded types

GUI

alsa-gui programs: Some simple interactive programs for sending MIDI control messages via ALSA
AutoForms library: GUI library based upon generic programming (SYB3)
barrie library: Declarative Gtk GUI library
binding-core library: Data Binding
binding-gtk library: Data Binding in Gtk2Hs
binding-wx library: Data Binding in WxHaskell
clutterhs library: Bindings to the Clutter animation library
DataTreeView library: A GTK widget for displaying arbitrary Data.Data.Data instances
gladexml-accessor library: Automagically declares getters for widget handles in specified interface file.
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
gtk-toy library: Convenient Gtk canvas with mouse and keyboard input.
gtk2hs-cast-glade library: A type class for cast functions of Gtk2hs: glade package
gtk2hs-cast-glib library: A type class for cast functions of Gtk2hs: glib package
gtk2hs-cast-gnomevfs library: A type class for cast functions of Gtk2hs: gnomevfs package
gtk2hs-cast-gtk library: A type class for cast functions of Gtk2hs: gtk package
gtk2hs-cast-gtkglext library: A type class for cast functions of Gtk2hs: gtkglext package
gtk2hs-cast-gtksourceview2 library: A type class for cast functions of Gtk2hs: gtksourceview2 package
gtk2hs-cast-th library: A type class for cast functions of Gtk2hs: TH package
gtk2hs-rpn library: Adds a module to gtk2hs allowing layouts to be defined using reverse polish notation.
Gtk2hsGenerics library: Convenience functions to extend Gtk2hs.
gulcii program: graphical untyped lambda calculus interactive interpreter
happindicator3 library and program: Binding to the appindicator library.
HGamer3D-CEGUI-Binding library: A Toolset for the Haskell Game Programmer - CEGUI Bindings
himerge program: Haskell Graphical User Interface for Emerge
hois library and program: OIS bindings
hsqml library: Haskell binding for Qt Quick
hsqml-demo-samples programs: HsQML sample programs
lgtk library and program: Lens GUI Toolkit
live-sequencer library and programs: Live coding of MIDI music
ltk library: Leksah tool kit
midimory program: A Memory-like (Concentration, Pairs, ...) game for tones
pianola library: Remotely controlling Java Swing applications
reactive-banana-threepenny library and programs: Examples for the reactive-banana library, using threepenny-gui.
reactive-banana-wx library and programs: Examples for the reactive-banana library, using wxHaskell.
reflex-dom library: Functional Reactive Web Apps with Reflex
sindre library and program: A programming language for simple GUIs
sneathlane-haste library: A compositional web UI library, which draws to a Canvas element
SybWidget library: Library which aids constructing generic (SYB3-based) widgets
threepenny-gui library and programs: GUI framework that uses the web browser as a display.
treersec library: Structure Editing Combinators
typed-spreadsheet library and programs: Typed and composable spreadsheets
UISF library: Library for Arrowized Graphical User Interfaces.
uni-graphs library: Graphs
uni-htk library: Graphical User Interface for Haskell Programs
uni-uDrawGraph library: Graphs binding
wx library: wxHaskell
wxc library: wxHaskell C++ wrapper
wxcore library: wxHaskell core
WXDiffCtrl library: WXDiffCtrl
wxdirect library and program: helper tool for building wxHaskell
wxFruit library and program: An implementation of Fruit using wxHaskell.
WxGeneric library: Generic (SYB3) construction of wxHaskell widgets
xtc library: eXtended & Typed Controls for wxHaskell.

Hakyll

hakyll-contrib-links library: A hakyll library that helps maintain a separate links database.

Happstack

fay-hsx library: Clientside HTML generation for fay.
happstack-clientsession library: client-side session data
happstack-fay library: Support for using Fay with Happstack
happstack-fay-ajax library: Support for using Fay with Happstack
happstack-foundation library: Glue code for using Happstack with acid-state, web-routes, reform, and HSP
happstack-hamlet library: Support for Hamlet HTML templates in Happstack
happstack-heist library: Support for using Heist templates in Happstack
happstack-hsp library: Support for using HSP templates in Happstack
happstack-hstringtemplate library: Support for using HStringTemplate in Happstack
happstack-jmacro library: Support for using JMacro with Happstack
happstack-lite library: Happstack minus the useless stuff
happstack-monad-peel library: monad-peel instances for Happstack types
happstack-plugins library: The haskell application server stack + reload
happstack-server library: Web related tools and services.
happstack-server-tls library: extend happstack-server with https:// support (TLS/SSL)
happstack-server-tls-cryptonite library: Extend happstack-server with native HTTPS support (TLS/SSL)
happstack-yui library: Utilities for using YUI3 with Happstack.

Hardware

blink1 library and program: Control library for blink(1) LED from ThingM
chalmers-lava2000 library: Hardware description EDSL
clash library: CAES Language for Synchronous Hardware (CLaSH)
clash-ghc program: CAES Language for Synchronous Hardware
clash-lib library: CAES Language for Synchronous Hardware - As a Library
clash-prelude library: CAES Language for Synchronous Hardware - Prelude library
clash-prelude-quickcheck library: QuickCheck instances for various types in the CλaSH Prelude
clash-systemverilog library: CAES Language for Synchronous Hardware - SystemVerilog backend
clash-verilog library: CAES Language for Synchronous Hardware - Verilog backend
clash-vhdl library: CAES Language for Synchronous Hardware - VHDL backend
crystalfontz library: Control Crystalfontz LCD displays.
ForSyDe library: ForSyDe's Haskell-embedded Domain Specific Language.
gpio library and program: Haskell GPIO interface, designed specifically for the RaspberryPi.
hArduino library: Control your Arduino board from Haskell.
HHDL library: Hardware Description Language embedded in Haskell.
hidapi library: Haskell bindings to HIDAPI
hleap library and program: Web Socket interface to Leap Motion controller
hsverilog library: Synthesizable Verilog DSL supporting for multiple clock and reset
HueAPI library: API for controlling Philips Hue lights
hydra-hs library: Haskell binding to the Sixense SDK for the Razer Hydra
kansas-lava library and programs: Kansas Lava is a hardware simulator and VHDL generator.
kansas-lava-cores library and programs: FPGA Cores Written in Kansas Lava.
kansas-lava-papilio library: Kansas Lava support files for the Papilio FPGA board
lambda-bridge library and program: A bridge from Haskell (on a CPU) to VHDL on a FPGA.
parport library: Simply interfacing the parallel port on linux
processor-creative-kit library: a creation kit for instruction sets and cpu simulators and development tools
serialport library: Cross platform serial port library.
sump library: A Haskell interface to SUMP-compatible logic analyzers
usb library: Communicate with USB devices
usb-iteratee library: Iteratee enumerators for the usb package
vcd library: Reading and writing VCD files.
verilog library: Verilog preprocessor, parser, and AST.
Wired library: Wire-aware hardware description
xilinx-lava library and programs: The Lava system for Xilinx FPGA design with layout combinators.
york-lava library: A library for digital circuit description.

Hash

adler32 library: An implementation of Adler-32, supporting rolling checksum operation
hash library: Hashing tools
hashable-extras library: Higher-rank Hashable
monad-hash library: Monad transformer for incremental hashing
murmur3 library: Pure Haskell implementation of the MurmurHash3 x86_32 algorithm.

Haskell

fast-tags library and program: Fast incremental vi and emacs tags.
fix-imports program: Program to manage the imports of a haskell module
haskell-reflect library: Reflect Haskell types.
module-management library and program: Clean up module imports, split and merge modules
no-role-annots library: Role annotations without -XRoleAnnotations

Haskell2010

haskell2010 library: Compatibility with Haskell 2010
prelude-compat library: Provide Prelude and Data.List with fixed content across GHC versions
prelude2010 library: Provide Prelude with fixed content across GHC versions

Haskell98

haskell98 library: Compatibility with Haskell 98
haskell98libraries library: Compatibility with Haskell 98

Hasql

hasql library: A very efficient PostgreSQL driver and a flexible mapping API
hasql-optparse-applicative library: "optparse-applicative" parsers for "hasql"
hasql-pool library: A pool of connections for Hasql
hasql-th library: Template Haskell utilities for Hasql
hasql-transaction library: A composable abstraction over the retryable transactions for Hasql
json-pointer-hasql library: JSON Pointer extensions for Hasql

Help

CheatSheet program: A Haskell cheat sheet in PDF and literate formats.
hscurses-fish-ex program: hscurses swimming fish example

Heuristics

banwords library: Generalized word blacklister
Binpack library: Common bin-packing heuristics.

HTML

flamethrower library: A template engine for HTML
html-entities library: A codec library for HTML-escaped text and HTML-entities
html-rules library: Perform traversals of HTML structures using sets of rules.
html-tokenizer library: An "attoparsec"-based HTML tokenizer
hxt-css library and program: CSS selectors for HXT
islink library: Check if an HTML element is a link
list-t-html-parser library: Streaming HTML parser
reflex-dom library: Functional Reactive Web Apps with Reflex

HTTP

list-t-http-client library: A streaming HTTP client
list-t-libcurl library: A "libcurl"-based streaming HTTP client
quiver-http library: Adapter to stream over HTTP(s) with quiver
wai-cors library: CORS for WAI

Hxt

quickcheck-relaxng library: Generate RelaxNG-constrained XML documents for QuickCheck

Hydraulics

epanet-haskell library: Haskell binding for EPANET

Hydrology

SWMMoutGetMB library: A parser for SWMM 5 binary .OUT files

IDE

fix-imports program: Program to manage the imports of a haskell module
hob library and program: A source code editor aiming for the convenience of use
hpage program: A scrapbook for Haskell developers
leksah library and programs: Haskell IDE written in Haskell
leksah-server library and programs: Metadata collection for leksah
manatee library and program: The Haskell/Gtk+ Integrated Live Environment
manatee-all library and program: Virtual package to install all Manatee packages.
manatee-anything library and program: Multithread interactive input/search framework for Manatee
manatee-core library: The core of Manatee.
manatee-editor library and program: Editor extension for Manatee.
manatee-template library and program: Template code to create Manatee application.
manatee-welcome library and program: Welcome module to help user play Manatee quickly.
module-management library and program: Clean up module imports, split and merge modules
wxhnotepad program: An example of how to implement a basic notepad with wxHaskell

Image

JuicyPixels library: Picture loading/serialization (in png, jpeg, bitmap, gif, tga, tiff and radiance)
latex-formulae-hakyll library: Use actual LaTeX to render formulae inside Hakyll pages
latex-formulae-image library: A library for rendering LaTeX formulae as images using an actual LaTeX installation
latex-formulae-pandoc library and program: Render LaTeX formulae in pandoc documents to images with an actual LaTeX installation
manatee-imageviewer library and program: Image viewer extension for Manatee.
streaming-png library and program: Perfectly streaming PNG image decoding

Image Processing

hip library: Haskell Image Processing (HIP) Library.
unm-hip library: A Library for the manipulation of images

Image Viewer

haskell-pdf-presenter program: Tool for presenting PDF-based presentations.
manatee-imageviewer library and program: Image viewer extension for Manatee.
pvd programs: A photo viewer daemon application with remote controlling abilities.

Indexed

index-core library: Indexed Types

Interaction

dialog library: Simple dialog-based user interfaces
midair library: Hot-swappable FRP

Interfaces

fresco-binding library: Fresco binding for Haskell
GuiTV library: GUIs for Tangible Values
hslogger library and program: Versatile logging framework
hslogger-reader library and programs: Parsing hslogger-produced logs.
hslogger-template library: Automatic generation of hslogger functions
hslogger4j library: DEPRECATED hslogger handlers for log4j's XMLLayout
TV library: Tangible Values -- composable interfaces

Interpreter

caledon program: a logic programming language based on the calculus of constructions

IO-Streams

binary-streams library: data serialization/deserialization io-streams library
cassava-streams library and program: io-streams interface for the cassava CSV library.
http-client-streams library: http-client for io-streams supporting openssl
http-streams library: An HTTP client using io-streams
io-streams library: Simple, composable, and easy-to-use stream I/O
io-streams-http library: http-client for io-streams
lzma-streams library: IO-Streams interface for lzma/xz compression
openssl-streams library: OpenSSL network support for io-streams.
seqid-streams library: Sequence ID IO-Streams
sha-streams library and program: SHA hashes for io-streams.
unagi-streams library: Unagi Chan IO-Streams

IRC

clogparse library: Parse IRC logs such as the #haskell logs on tunes.org
funbot program: IRC bot for fun, learning, creativity and collaboration.
irc-bytestring library: serialization and parsing of IRC messages
irc-colors library: Colourize your IRC strings
irc-fun-bot library: Library for writing fun IRC bots.
irc-fun-client library: Another library for writing IRC clients.
irc-fun-messages library: Types and functions for working with the IRC protocol.
irc-fun-types library: Common types for IRC related packages
manatee-ircclient library and programs: IRC client extension for Manatee.
rss2irc program: watches an RSS/Atom feed and writes it to an IRC channel
simpleirc library: Simple IRC Library
y0l0bot program: #plaimi's all-encompassing bot

IRC Client

manatee-ircclient library and programs: IRC client extension for Manatee.
xchat-plugin library and program: XChat

Iteratee

ChannelT library: Generalized stream processors

Java

inline-java library: Java interop via inline Java code in Haskell modules.
j2hs program: j2hs
java-bridge programs: Bindings to the JNI and a high level interface generator.
java-bridge-extras library: Utilities for working with the java-bridge package.
java-reflect library: Tools for reflecting on Java classes.
sparkle library and program: Distributed Apache Spark applications in Haskell

JavaScript

fwgl library: Game engine
fwgl-javascript library: FWGL GHCJS backend
haste-compiler library and programs: Haskell To ECMAScript compiler
js-flot library: Obtain minified flot code
js-good-parts library: Javascript: The Good Parts -- AST & Pretty Printer
js-jquery library: Obtain minified jQuery code
jsaddle library: High level interface for webkit-javascriptcore
jsc library: High level interface for webkit-javascriptcore
reflex-dom library: Functional Reactive Web Apps with Reflex
shine library: Declarative graphics for the browser using GHCJS
shine-varying library: FRP interface for shine using the varying package
sunroof-compiler library: Monadic Javascript Compiler
sunroof-examples programs: Tests for Sunroof
sunroof-server library: Monadic Javascript Compiler - Server Utilities

JSON

aeson library: Fast JSON parsing and encoding
aeson-better-errors library: Better error messages when decoding JSON values.
aeson-diff library and programs: Extract and apply patches to JSON documents.
aeson-filthy library: Several newtypes and combinators for dealing with less-than-cleanly JSON input.
aeson-flatten library: JSON flatten for Aeson
aeson-native library: Fast JSON parsing and encoding (deprecated)
aeson-parsec-picky library: Alternative JSON parser based on Parsec and Aeson
aeson-prefix library: Hiearchical prefixing for aeson
aeson-pretty library and program: JSON pretty-printing library and command-line tool.
aeson-qq library: JSON quasiquoter for Haskell
aeson-toolkit library: A generalization of Aeson over Failure
aeson-value-parser library: An API for parsing "aeson" JSON tree into Haskell types
blaze-json library: tiny library for encoding json
curl-aeson library: Communicate with HTTP service using JSON
data-json-token library and program: Json Token datatype
dead-simple-json library: Dead simple JSON parser, with some Template Haskell sugar.
digestive-functors-aeson library: Run digestive-functors forms against JSON
gitson library: A document store library for Git + JSON.
highjson library: Very fast JSON serialisation and parsing library
htoml library and program: Parser for TOML files
jose-jwt library: JSON Object Signing and Encryption Library
json-builder library: Data structure agnostic JSON serialization
JSON-Combinator library: A combinator library on top of a generalised JSON type
json-encoder library: A direct-to-bytes single-pass JSON encoder with a declarative DSL
json-enumerator library: Pure-Haskell utilities for dealing with JSON with the enumerator package. (deprecated)
json-fu library: Generic JSON serialization / deserialization
json-incremental-decoder library: Incremental JSON parser with early termination and a declarative DSL
json-pointer library: JSON Pointer parsing and interpretation utilities
json-pointer-hasql library: JSON Pointer extensions for Hasql
json-qq library: Json Quasiquatation library for Haskell.
json-rpc-client library and programs: JSON-RPC 2.0 on the client side.
json-rpc-server library and program: JSON-RPC 2.0 on the server side.
json-stream library: Incremental applicative JSON parser
json-tools programs: A collection of JSON tools
json-types library: Basic types for representing JSON
json2 library: Library provides support for JSON.
json2-hdbc library: Support JSON for SQL Database.
json2-types library: Defined JSON data types and function for renders JSON to string.
JsonGrammar library: Combinators for bidirectional JSON parsing
jsonschema-gen library: JSON Schema generator from Algebraic data type
log2json library and program: Turn log file records into JSON.
quick-schema library: Slimmed down json schema language and validator
Quickson library: Quick JSON extractions with Aeson
record-aeson library: Instances of "aeson" classes for the "record" types
text-json-qq library: Json Quasiquatation for Haskell.
xml-to-json-fast library and program: Fast, light converter of xml to json capable of handling huge xml files
yajl-enumerator library: Enumerator-based interface to YAJL, an event-based JSON implementation

JVM

dbjava library and program: Decompiler Bytecode Java
hs-java library: Java .class files assembler/disassembler
inline-java library: Java interop via inline Java code in Haskell modules.
j2hs program: j2hs
java-bridge programs: Bindings to the JNI and a high level interface generator.
java-bridge-extras library: Utilities for working with the java-bridge package.
java-reflect library: Tools for reflecting on Java classes.
jdi library and program: Implementation of Java Debug Interface
pianola library: Remotely controlling Java Swing applications
sparkle library and program: Distributed Apache Spark applications in Haskell

Kerf

herf-time library: haskell time manipulation in a 'kerf like' style.

Ketchup

Ketchup library: A super small web framework for those who don't like big and fancy codebases

Keyword Extractor

rake library: Rapid Automatic Keyword Extraction (RAKE)

LambdaCalculus

lambda-toolbox program: An application to work with the lambda calculus (for learning)

Language

abacate library: Parser for a language similar to Cucumber's Gherkin
abt library: Abstract binding trees for Haskell
acl2 library: Writing and calling ACL2 from Haskell.
alga library and program: Algorithmic automation for various DAWs
antimirov library and program: Define the language containment (=subtyping) relation on regulare expressions.
applicative-parsec library: An applicative parser combinator library
applicative-quoters library: Quasiquoters for idiom brackets and an applicative do-notation
arghwxhaskell program: An interpreter for the Argh! programming language in wxHaskell.
ariadne program: Go-to-definition for Haskell
array-forth library and programs: A simple interpreter for arrayForth, the language used on GreenArrays chips.
ASN1 library: ASN.1 support for Haskell
astview program: A GTK-based abstract syntax tree viewer for custom languages and parsers
astview-utils library: Interfacing between hint and astview
aterm-utils library and program: Utility functions for working with aterms as generated by Minitermite
atom library: An EDSL for embedded hard realtime applications.
atomo program: A highly dynamic, extremely simple, very fun programming language.
bash library: Bash generation library.
BASIC library: Embedded BASIC
berp library and program: An implementation of Python 3.
bidirectionalization-combined programs: ...
bighugethesaurus library: API wrapper for Big Huge Thesaurus
BiGUL library: The Bidirectional Generic Update Language
binary-literal-qq library: Extends Haskell with binary literals.
blip program: Python to bytecode compiler.
bond library and program: Bond schema compiler and code generator
bond-haskell-compiler library and program: Bond code generator for Haskell
boolsimplifier library: Simplification tools for simple propositional formulas.
bound library: Making de Bruijn Succ Less
brainfuck-tut library and program: A simple BF interpreter.
broker-haskell library: Haskell bindings to Broker, Bro's messaging library.
c-dsl library: A higher level DSL on top of language-c
c0check program: Simple C0 Syntax Check
c0parser library: Simple C0 Parser
caledon program: a logic programming language based on the calculus of constructions
camfort library and program: CamFort - Cambridge Fortran infrastructure
cao program: CAO Compiler
cap program: Interprets and debug the cap language.
cg program: Parser for categorial grammars.
chalmers-lava2000 library: Hardware description EDSL
cil library: An interface to CIL.
circ library: A Compiler IR Compiler.
clang-pure library: Pure C++ code analysis with libclang
clash library: CAES Language for Synchronous Hardware (CLaSH)
clogparse library: Parse IRC logs such as the #haskell logs on tunes.org
clua program: C to Lua data wrapper generator
cmonad library: A library for C-like programming
codo-notation library: A notation for comonads, analogous to the do-notation for monads.
combinator-interactive library and program: SKI Combinator interpreter
compilation library: Haskell functionality for quickly assembling simple compilers.
compstrat library: Strategy combinators for compositional data types
config-value library: Simple, layout-based value language similar to YAML or JSON
context-free-grammar library: Basic algorithms on context-free grammars
copilot library and program: A stream DSL for writing embedded C programs.
copilot-c99 library and program: A compiler for Copilot targeting C99.
copilot-cbmc library: Copilot interface to a C model-checker.
copilot-core library: An intermediate representation for Copilot.
copilot-language library: A Haskell-embedded DSL for monitoring hard real-time distributed systems.
copilot-libraries library: Libraries for the Copilot language.
copilot-sbv library: A compiler for CoPilot targeting SBV.
copilot-theorem library: k-induction for Copilot.
core library: External core parser and pretty printer.
core-haskell program: A subset of Haskell using in UCC for teaching purpose
CoreErlang library: Manipulating Core Erlang source code
cryptol library and programs: Cryptol: The Language of Cryptography
CSPM-CoreLanguage library: Definition of a FDR-compatible CSP core-language.
CSPM-cspm library and program: cspm command line tool for analyzing CSPM specifications.
CSPM-FiringRules library: Firing rules semantic of CSPM
CSPM-Frontend library: A CSP-M parser compatible with FDR-2.91
CSPM-Interpreter library: An interpreter for CSPM
css library: Minimal monadic CSS DSL.
cube library and program: Cubic DSL for 3D printing
curry-base library: Functions for manipulating Curry programs
curry-frontend library and program: Compile the functional logic language Curry to several intermediate formats
data-reify library and programs: Reify a recursive data structure into an explicit graph.
data-reify-cse library: Common Sub-Expression Elimination for graphs generated by Data.Reify.
data-treify library: Reify a recursive data structure into an explicit graph.
derive-gadt library and programs: Instance deriving for (a subset of) GADTs.
dictparser library and program: Parsec parsers for the DICT format produced by dictfmt -t
djinn-ghc library: Generate Haskell code from a type. Bridge from Djinn to GHC API.
djinn-lib library: Generate Haskell code from a type. Library extracted from djinn package.
djinn-th library: Generate executable Haskell code from a type
dove library: The Dove verification language.
DrHylo library and program: A tool for deriving hylomorphisms
ds-kanren library: A subset of the miniKanren language
DTC library: Data To Class transformation.
Ebnf2ps program: Peter's Syntax Diagram Drawing Tool
ecma262 library and program: A ECMA-262 interpreter library
effective-aspects library: A monadic embedding of aspect oriented programming
effective-aspects-mzv library: A monadic embedding of aspect oriented programming, using "Monads, ...
egison-quote library: A quasi quotes for using Egison expression in Haskell code
ehs library and program: Embedded haskell template using quasiquotes.
Elm library and programs: The Elm language module.
elm-bridge library: Derive Elm types from Haskell types
elm-build-lib library: Compile Elm code to JS within Haskell
elm-compiler library and programs: Values to help with elm-package, elm-make, and elm-lang.org.
elm-core-sources library: Source files for the Elm runtime and standard libraries
elm-get library and program: Tool for sharing and using Elm libraries
elm-package library and program: Package manager for Elm libraries
elm-reactor program: Interactive development tool for Elm programs
elm-server program: Server for developing Elm projects
Eq program: Render math formula in ASCII, and perform some simplifications
ewe program: A language for teaching simple programming languages
exception-hierarchy library: Exception type hierarchy with TemplateHaskell
explain program: Show how expressions are parsed
extcore library: Libraries for processing GHC Core
fault-tree library: A fault tree analysis library.
feldspar-language library: A functional embedded language for DSP and parallelism
feldspar-signal library: Signal Processing extension for Feldspar
Feval programs: Evaluation using F-Algebras
foma library: Simple Haskell bindings for Foma.
formura library and programs: Formura is a simple language to describe stencil computation.
ForSyDe library: ForSyDe's Haskell-embedded Domain Specific Language.
forth-hll library: A simple eDSL for generating arrayForth code.
free-theorems library: Automatic generation of free theorems.
free-theorems-counterexamples library and program: Automatically Generating Counterexamples to Naive Free Theorems
free-theorems-seq library: Taming Selective Strictness
free-theorems-seq-webui program: Taming Selective Strictness
free-theorems-webui programs: CGI-based web interface for the free-theorems package.
freesect program: A Haskell syntax extension for generalised sections
fresh library: Introduce fresh variables into Haskell source code
frp-arduino library: Arduino programming without the hassle of C.
ftshell program: Shell interface to the FreeTheorems library.
funpat library: A generalization of pattern matching
Ganymede program: An Io interpreter in Haskell.
gender library and program: Identify a persons gender by their first name
ghc-options library and program: Utilities for extracting GHC options needed to compile a given Haskell target.
ghc-parser library: Haskell source parser from GHC.
ghc-session library and program: Simplified GHC API
ghc-srcspan-plugin library: Generic GHC Plugin for annotating Haskell code with source location data.
ghci-lib library: A library for interactively evaluating Haskell code.
gimlh library: Haskell parser for GIML
GLM library and programs: Simple Gridlab-D GLM parser and utilities.
global library: Library enabling unique top-level declarations
google-search library: EDSL for Google and GMail search expressions
GoogleTranslate library: Interface to Google Translate API
GroteTrap library: Parser and selection library for expression languages.
GTALib library: A library for GTA programming
hakaru library: A probabilistic programming embedded DSL
happstack-facebook library and program: A package for building Facebook applications using Happstack
hardware-edsl library: Deep embedding of hardware descriptions with code generation.
harp library: HaRP allows pattern-matching with regular expressions
haskarrow program: A dialect of haskell with order of execution based on dependency resolution
haskell-brainfuck library and program: BrainFuck interpreter
haskell-coffee library: Simple CoffeeScript API
haskell-exp-parser library: Simple parser parser from Haskell to TemplateHaskell expressions
haskell-generate library: Typesafe generation of haskell source code
haskell-lexer library: A fully compliant Haskell 98 lexer.
haskell-names library: Name resolution library for Haskell
haskell-rules library: A DSL for expressing natural deduction rules in Haskell.
haskell-src library: Support for manipulating Haskell source code
haskell-src-exts library: Manipulating Haskell source: abstract syntax, lexer, parser, and pretty-printer
haskell-src-exts-qq library: A quasiquoter for haskell-src-exts.
haskell-src-meta library: Parse source to template-haskell abstract syntax.
haskell-src-meta-mwotton library: Parse source to template-haskell abstract syntax.
haskell-type-exts library: A type checker for Haskell/haskell-src-exts
haskell-typescript library: Simple TypeScript API
haskelm library and program: Elm to Haskell translation
haspell library: Haskell bindings to aspell
hdis86 library: Interface to the udis86 disassembler for x86 and x86-64 / AMD64
her-lexer library: A lexer for Haskell source code.
her-lexer-parsec library: Parsec frontend to "her-lexer" for Haskell source code.
hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel
hermit-syb library: HERMIT plugin for optimizing Scrap-Your-Boilerplate traversals.
hexpr library: A framework for symbolic, homoiconic languages.
hfmt library and program: Haskell source code formatter
hierarchical-exceptions library: Template Haskell functions to easily create exception hierarchies
hindley-milner library: Template for Hindley-Milner based languages
hint library: Runtime Haskell interpreter (GHC API wrapper)
hint-server library: A server process that runs hint.
HJavaScript library: HJavaScript is an abstract syntax for a typed subset of JavaScript.
HJScript library: HJScript is a Haskell EDSL for writing JavaScript programs.
HJVM library: A library to create a Java Virtual Machine and manipulate Java objects
ho-rewriting library: Generic rewrite rules with safe treatment of variables and binders
homplexity program: Haskell code quality tool
hopencc library: Haskell binding to libopencc
hruby library: Embed a Ruby intepreter in your Haskell program !
hs-gen-iface program: Utility to generate haskell-names interface files
hs-inspector library: Haskell source code analyzer
hs2dot program: Generate graphviz-code from Haskell-code.
hscolour library and program: Colourise Haskell code.
hse-cpp library: Preprocess+parse haskell code
hsnock library and program: Nock 5K interpreter.
hsp library: Haskell Server Pages is a library for writing dynamic server-side web pages.
HsParrot library: Haskell integration with Parrot virtual machine
HsPerl5 library: Haskell interface to embedded Perl 5 interpreter
hssqlppp library: SQL parser and type checker
hssqlppp-th library: hssqlppp extras which need template-haskell
hswip library: embedding prolog in haskell
hsx library and program: HSX (Haskell Source with XML) allows literal XML syntax in Haskell source code.
hsx2hs library and program: HSX (Haskell Source with XML) allows literal XML syntax in Haskell source code.
htoml library and program: Parser for TOML files
hubris library and program: Support library for Hubris, the Ruby <=> Haskell bridge
huckleberry library: IchigoJam BASIC expressed in Haskell.
husk-scheme library and programs: R5RS Scheme interpreter, compiler, and library.
husk-scheme-libs library: Extra libraries for the husk Scheme platform.
hydrogen-cli program: Hydrogen Data
hydrogen-cli-args library: Hydrogen Command Line Arguments Parser
hydrogen-data library: Hydrogen Data
hydrogen-multimap library: Hydrogen Multimap
hydrogen-parsing library: Hydrogen Parsing Utilities
hydrogen-prelude library: Hydrogen Prelude
hydrogen-prelude-parsec library: Hydrogen Prelude /w Parsec
hydrogen-syntax library: Hydrogen Syntax
hydrogen-util library: Hydrogen Tools
hydrogen-version library: Hydrogen Version Type
imperative-edsl library: Deep embedding of imperative programs with code generation
imperative-edsl-vhdl library: Deep embedding of VHDL programs with code generation.
ImperativeHaskell library: A library for writing Imperative style haskell.
improve library: An imperative, verifiable programming language for high assurance applications.
inch program: A type-checker for Haskell with integer constraints
indexed-do-notation library: Do notation for indexed monads
indian-language-font-converter library: Indian Language Font Converter
interpol library and program: GHC preprocessor and library to enable variable interpolation in strings
ivory library: Safe embedded C programming.
ivory-artifact library: Manage additional data files during Ivory compilation.
ivory-backend-c library: Ivory C backend.
ivory-bitdata library and program: Ivory bit-data support.
ivory-examples program: Ivory examples.
ivory-hw library: Ivory hardware model (STM32F4).
ivory-opts library: Ivory compiler optimizations.
ivory-serialize library: Serialization library for Ivory.
ivory-stdlib library: Ivory standard library.
ixdopp program: A preprocessor for expanding "ixdo" notation for indexed monads
jarfind library and program: Tool for searching java classes, members and fields in classfiles and JAR archives
Javasf program: A utility to print the SourceFile attribute of one or more Java class files.
Javav program: A utility to print the target version of Java class files.
jdi library and program: Implementation of Java Debug Interface
jmacro library and programs: QuasiQuotation library for programmatic generation of Javascript code.
js-good-parts library: Javascript: The Good Parts -- AST & Pretty Printer
JsContracts library and program: Design-by-contract for JavaScript
jsmw library: Javascript Monadic Writer base package.
json-python library: Call python inline from haskell
JsonGrammar library: Combinators for bidirectional JSON parsing
jvm-parser library: A parser for JVM bytecode files
kansas-lava library and programs: Kansas Lava is a hardware simulator and VHDL generator.
kbq-gu programs: Rpoku spoken word programming language
kure library: Combinators for Strategic Programming
kure-your-boilerplate library: Generator for Boilerplate KURE Combinators
lambda-placeholders library: A library to emulate laceholders similar to Scala.
lambdaBase library
LambdaCalculator program: A basic lambda calculator with beta reduction and a REPL
lambdaLit program: ...
LambdaPrettyQuote library: Quasiquoter, and Arbitrary helpers for the lambda calculus.
language-asn1 library and programs: Parsing of ASN1 definitions
language-bash library: Parsing and pretty-printing Bash shell scripts
language-boogie library and programs: Interpreter and language infrastructure for Boogie.
language-c library: Analysis and generation of C code
language-c-comments library: Extracting comments from C code
language-c-inline library: Inline C & Objective-C code in Haskell for language interoperability
language-c-quote library: C/CUDA/OpenCL/Objective-C quasiquoting library.
language-cil library: Manipulating Common Intermediate Language AST
language-css library: CSS 2.1 syntax
language-dot library and program: A library for the analysis and creation of Graphviz DOT files
language-ecmascript library: JavaScript parser and pretty-printer library
language-ecmascript-analysis library: JavaScript static analysis library.
language-eiffel library: Parser and pretty printer for the Eiffel language.
language-fortran library: Fortran lexer and parser, language support, and extensions.
language-gcl library: Something similar to Dijkstra's guarded command language
language-glsl library and program: GLSL abstract syntax tree, parser, and pretty-printer
language-go library: A library for analysis and synthesis of Go code.
language-guess library: Guess at which language a text is written in using trigrams.
language-java library: Manipulating Java source: abstract syntax, lexer, parser, and pretty-printer
language-java-classfile library: Parser for Java .class files
language-javascript library: Parser for JavaScript
language-kort library: Parser and serializer for the Kort information language.
language-lua library: Lua parser and pretty-printer
language-lua-qq library: Initial project template from stack
language-lua2 library and programs: Lua parser and pretty printer
language-mixal library and program: Parser, pretty-printer, and AST types for the MIXAL assembly language
language-nix library: Data types and useful functions to represent and manipulate the Nix language.
language-objc library: Analysis and generation of Objective C code
language-openscad library and program: A simple parser for OpenSCAD
language-pig library: Pig parser in haskell.
language-python library: Parsing and pretty printing of Python code.
language-python-colour program: Generate coloured XHTML for Python code.
language-python-test programs: testing code for the language-python library
language-qux library: Utilities for working with the Qux language
language-sh library: A package for parsing shell scripts
language-slice library: AST and parser for the ZeroC Slice language (Specification language for ICE)
language-sqlite library: Full parser and generator for SQL as implemented by SQLite3
language-thrift library: Parser and pretty printer for the Thrift IDL format.
language-typescript library: A library for working with TypeScript Definition files
language-vhdl library: VHDL AST and pretty printer in Haskell.
language-webidl library: Parser and Pretty Printer for WebIDL
lexer-applicative library: Simple lexer based on applicative regular expressions
lhs2tex program: Preprocessor for typesetting Haskell sources with LaTeX
lhs2TeX-hl program: Literate highlighter preprocessor for lhs2tex
LibClang library: Haskell bindings for libclang (a C++ parsing library)
libconfig library: Haskell bindings to libconfig
lift-generics library: GHC.Generics-based Language.Haskell.TH.Syntax.lift implementation
linkcore program: Combines multiple GHC Core modules into a single module
liquid-fixpoint library and program: Predicate Abstraction-based Horn-Clause/Implication Constraint Solver
liquidhaskell library and programs: Liquid Types for Haskell
located library: Source location helpers
lojban library and program: Useful utilities for the Lojban language
lojbanParser library and program: lojban parser
lojbanXiragan library and program: lojban to xiragan
lojysamban program: Prolog with lojban
LslPlus program: An execution and testing framework for the Linden Scripting Language (LSL)
lss library: ...
ltl library: Using linear temporal logic (LTL) to verify embedded software and hardware.
luka library: Simple ObjectiveC runtime binding
luthor library: Tools for lexing and utilizing lexemes that integrate with Parsec.
MagicHaskeller library and programs: Automatic inductive functional programmer by systematic search
mathista library and program: A small programming language for numerical computing
maude library: An interface to the Maude rewriting system.
mcmc-synthesis library: MCMC applied to probabilistic program synthesis
mecha library and program: A constructive solid geometry (CSG) modeling language.
melody library and program: A functional scripting language
meta-misc library: Utility library providing miscellaneous meta-programming utilities.
mi library: Multiple Instance for Haskell
MicrosoftTranslator library: Interface for Microsoft Translator
mida library and program: Language for algorithmic generation of MIDI files
miniforth library and program: Miniature FORTH-like interpreter
ministg program: an interpreter for an operational semantics for the STG machine.
ml-w library and program: Minimal ML language to to demonstrate the W type infererence algorithm.
modelicaparser library: A parser for the modelica language
modulespection library: Template Haskell for introspecting a module's declarations
modulo library and program: Modular C code generator
msgpack-idl library and program: An IDL Compiler for MessagePack
msh library: Object-Oriented Programming in Haskell
mueval library and programs: Safely evaluate pure Haskell expressions
mulang library: The Mu Language, a non-computable extended Lambda Calculus
NanoProlog library and program: Very small interpreter for a Prolog-like language
naver-translate library: Interface to Naver Translate
netlist library: Netlist AST
netlist-to-vhdl library: Convert a Netlist AST to VHDL
nix-eval library: Evaluate Haskell expressions using Nix to get packages
Nomyx-Language library: Language to express rules for Nomic
Nomyx-Rules library: Language to express rules for Nomic
NXTDSL library and program: Generate NXC Code from DSL
oberon0 library and programs: Oberon0 Compiler
Obsidian library: Embedded language for GPU Programming
octopus library and program: Lisp with more dynamism, more power, more simplicity.
omega program: A purely functional programming language and a proof system
operational-alacarte library: A version of Operational suitable for extensible EDSLs
optimusprime program: A supercompiler for f-lite
paragon library and program: Paragon
Paraiso library: a code generator for partial differential equations solvers.
pec library and programs: pec embedded compiler
peggy library and program: The Parser Generator for Haskell
pisigma library and program: A dependently typed core language
Plural library: Pluralize English words
polyseq library and program: Taming Selective Strictness
powerpc library: Tools for PowerPC programs.
prelude-edsl library: An EDSL-motivated subset of the Prelude
preprocess-haskell library: Preprocess Haskell Repositories.
preprocessor-tools library: A framework for extending Haskell's syntax via quick-and-dirty preprocessors
processor-creative-kit library: a creation kit for instruction sets and cpu simulators and development tools
prolog library: A Prolog interpreter written in Haskell.
prolog-graph program: A command line tool to visualize query resolution in Prolog.
prolog-graph-lib library: Generating images of resolution trees for Prolog queries.
Pugs program: A Perl 6 Implementation
purescript library and programs: PureScript Programming Language Compiler
pyffi library: Call python inline from haskell
pyfi library: Call python inline from haskell
quenya-verb library and program: Quenya verb conjugator
rail-compiler-editor library and programs: Compiler and editor for the esolang rail.
readpyc program: Read and pretty print Python bytecode (.pyc) files.
really-simple-xml-parser library: A really simple XML parser
register-machine-typelevel library: A computationally universal register machine implementation at the type-level
rope library: Tools for manipulating fingertrees of bytestrings with optional annotations
seal-module library: Template Haskell support for global configuration data
sexp library and program: S-Expression parsing/printing made fun and easy
sexp-grammar library: Invertible parsers for S-expressions
shady-gen library: Functional GPU programming - DSEL & compiler
she library and program: A Haskell preprocessor adding miscellaneous features
shivers-cfg library: Implementation of Shivers' Control-Flow Analysis
show library: 'Show' instances for Lambdabot
shplit program: A Haskell pattern splitter with emacs attachments
sifflet program: A simple, visual, functional programming language.
sifflet-lib library: Library of modules shared by sifflet and its tests and its exporters.
signals library: Synchronous signal processing for DSLs.
simple-c-value library: A simple C value type
simple-eval library and program: Evaluate a Text to an Integer: "1 + 1" -> 2
simple-sql-parser library and program: A parser for SQL queries
sized-types library and program: Sized types in Haskell using the GHC Nat kind.
slot-lambda library: Write lambdas without naming the parameters.
smt-lib library: Parsing and printing SMT-LIB.
snaplet-lss library: Lexical Style Sheets - Snap Web Framework adaptor.
SNet library: Declarative coördination language for streaming networks.
specialize-th library: Create specialized types from polymorphic ones using TH
spir-v library: Some utilities for reading and writing SPIR-V files
staticanalysis library: Reusable static analysis interfaces and modules.
Strafunski-Sdf2Haskell program: Converts SDF to Haskell
stylish-haskell library and program: Haskell code prettifier
subleq-toolchain library and program: Toolchain of subleq computer.
sugarhaskell programs: Library-based syntactic extensibility for Haskell
sunroof-compiler library: Monadic Javascript Compiler
sunroof-examples programs: Tests for Sunroof
sunroof-server library: Monadic Javascript Compiler - Server Utilities
swearjure program: Clojure without alphanumerics.
synt library and program: Similar code analysis.
syntactic library: Generic representation and manipulation of abstract syntax
syntax-trees library: Convert between different Haskell syntax trees.
syntax-trees-fork-bairyn library: Convert between different Haskell syntax trees. Bairyn's fork.
tempus program: Interpreter for the FRP language Tempus
termination-combinators library: Termination combinators for forcing non-terminating algorithms to terminate
tersmu programs: A semantic parser for lojban
text-register-machine library: A Haskell implementation of the 1# Text Register Machine
th-alpha library: Alpha equivalence for TH Exp
th-instances library: A place to collect orphan instances for Template Haskell
th-lift library: Derive Template Haskell's Lift class for datatypes.
thih library and program: Typing Haskell In Haskell
to-haskell library: A type class and some utilities for generating Haskell code.
transformations library and program: Generic representation of tree transformations
trhsx library: Deprecated
TTTAS library: Typed Transformations of Typed Abstract Syntax
turkish-deasciifier library and program: Haskell port of Deniz Yuret's Turkish deasciifier.
type-settheory library: Sets and functions-as-relations in the type system
type-sub-th library: Substitute types for other types with Template Haskell
typescript-docs program: A documentation generator for TypeScript Definition files
unbound library: Generic support for programming with names and binders
unbound-generics library: Support for programming with names and binders using GHC Generics
unification-fd library: Simple generic unification algorithms.
universe-th library: Construct a Dec's ancestor list.
unlit library and program: Tool to convert literate code between styles or to code.
urldisp-happstack library: Simple, declarative, expressive URL routing -- on happstack.
URLT library: Library for maintaining correctness of URLs within an application.
valid-names library: Valid operator/module characters
verilog library: Verilog preprocessor, parser, and AST.
vhdl library: VHDL AST and pretty printer
web-routes library: portable, type-safe URL routing
web-routes-boomerang library: Library for maintaining correctness and composability of URLs within an application.
web-routes-happstack library: Adds support for using web-routes with Happstack
web-routes-hsp library: Adds XMLGenerator instance for RouteT monad
web-routes-mtl library: Extends web-routes with mtl-based MonadIO / MonadTrans RouteT instances
web-routes-regular library: portable, type-safe URL routing
web-routes-th library: Support for deriving PathInfo using Template Haskell
web-routes-transformers library: Extends web-routes with some transformers instances for RouteT
web-routes-wai library: Library for maintaining correctness of URLs within an application.
WebBits library: JavaScript analysis tools
WebBits-Html library: JavaScript analysis tools
WebBits-multiplate library: A Multiplate instance for JavaScript.
webidl library and programs: Parser and Pretty Printer for the Web IDL Language
while-lang-parser library: Parser for the While language.
Wired library: Wire-aware hardware description
words library: Cross-platform access to a list of words
XmlHtmlWriter library: A library for writing XML and HTML
yabi-muno library and program: Yet Another Brainfuck Interpreter
zasni-gerna library: lojban parser (zasni gerna)
zeroth library and program: ZeroTH - remove unnecessary TH dependencies

Language Tools

oden-go-packages library: Provides Go package metadata.

Languages

Frank program: An experimental programming language with typed algebraic effects
simple-pascal library and program: Simplified Pascal language to SSVM compiler
simple-stacked-vm library and program: Simple stacked virtual machine: assembler, disassembler, bytecode interpreter
why3 library: Haskell support for the Why3 input format.

LaTeX

haskintex library and program: Haskell Evaluation inside of LaTeX code.
HaTeX library: The Haskell LaTeX library.
hatex-guide library: HaTeX User's Guide.
simplex program: A simple markup language that translates to LaTeX
smallcaps library and programs: Flatten camel case text in LaTeX files

Lazy

promises library: Lazy demand-driven promises

Lens

http-client-lens library: Optics for http-client
minilens library: A minimalistic lens library, providing only the simplest, most basic lens functionality.

Lenses

app-lens library: applicative (functional) bidirectional programming beyond composition chains
bff-mono library: "Bidirectionalization for Free" for Monomorphic Transformations
BiGUL library: The Bidirectional Generic Update Language
data-lens-light library: Simple lenses, minimum dependencies
fclabels library: First class accessor labels implemented as lenses.
lens library: Lenses, Folds and Traversals
lens-action library: Monadic Getters and Folds
lens-datetime library: Lenses for Data.Time.* types
lens-family library: Lens Families
lens-family-core library: Haskell 98 Lens Families
lens-properties library: QuickCheck properties for lens
lens-simple library: simplified import of elementary lens-family combinators
lenz library: Van Laarhoven lenses
lenz-template library: Van Laarhoven lens templates
mezzolens library: Pure Profunctor Functional Lenses
microlens library: A tiny part of the lens library with no dependencies
microlens-contra library: True folds and getters for microlens
microlens-each library: 'each' for microlens
microlens-ghc library: microlens + array, bytestring, containers, transformers
microlens-mtl library: microlens support for Reader/Writer/State from mtl
microlens-platform library: Feature-complete microlens
microlens-th library: Automatic generation of record lenses for microlens
multiplate library: Lightweight generic library for mutually recursive data types.
putlenses library: Put-based lens library
smallcheck-lens library: SmallCheck properties for lens
tables library: In-memory storage with multiple keys using lenses and traversals
tasty-lens library: Tasty TestTrees for Lens validation

Library

Condor library and program: Information retrieval library
condor library and program: Information retrieval library
Gamgine library: Some kind of game library or set of utilities.
glider-nlp library: Natural Language Processing library
inilist library: Processing for .ini files with duplicate sections and options

Linear Algebra

bed-and-breakfast library: Efficient Matrix operations in 100% Haskell.
nurbs library: NURBS

Linguistics

ace library: Attempto Controlled English parser and printer
AlignmentAlgorithms library: Collection of alignment algorithms
WordAlignment library and program: Bigram word pair alignments.

Linux

aur library: Access metadata from the Arch Linux User Repository.

List

data-ordlist library: Set and bag operations on ordered lists
lcs library: Find longest common sublist of two lists
list-extras library: Common not-so-common functions for lists
list-mux library: List Multiplexing
listsafe library: Safe wrappers for partial list functions, supporting MonadThrow.
opentheory-stream library: Infinite stream types
split library: Combinator library for splitting lists.
utility-ht library: Various small helper functions for Lists, Maybes, Tuples, Functions

Little Game

click-clack program: Toy game (tetris on billiard board). Hipmunk in action.

Local Search

local-search library: Generalised local search within Haskell, for applications in combinatorial optimisation.

Logging

greg-client library: A scalable distributed logger with a high-precision global time axis.
HLogger library and program: Simple, concurrent and easy-to-use logging library
hlogger library: Simple, concurrent, extendable and easy-to-use logging library
hsmisc library: A collection of miscellaneous modules
katip library: A structured logging framework.
log-effect library: An extensible log effect using extensible-effects
log2json library and program: Turn log file records into JSON.
monad-logger-json library: JSON-friendly Logging APIs
monad-logger-syslog library: syslog output for monad-logger
raven-haskell library: Haskell client for Sentry logging service.
rollbar library: error tracking through rollbar.com
rotating-log library: Size-limited, concurrent, automatically-rotating log writer.
SessionLogger library: Easy Loggingframework
simple-log library: Simple log for Haskell
simple-log-syslog library: Syslog backend for simple-log
trifecta library: A modern parser combinator library with convenient diagnostics
tslogger library: Thread-safe logging.
yet-another-logger library and program: Yet Another Logger

Logic

AC-Boolean library: Handle Boolean values generatically.
atp-haskell library: Translation from Ocaml to Haskell of John Harrison's ATP code
cond library: Basic conditional and boolean operators with monadic variants.
ersatz library and programs: A monad for expressing SAT or QSAT problems using observable sharing.
ersatz-toysat library and programs: toysat driver as backend for ersatz
hatt library and program: A truth table generator for classical propositional logic.
jukebox library and program: A first-order reasoning toolbox
logic-classes library: Framework for propositional and first order logic, theorem proving
LogicGrowsOnTrees library and programs: a parallel implementation of logic programming using distributed tree exploration
LogicGrowsOnTrees-MPI library and programs: an adapter for LogicGrowsOnTrees that uses MPI
LogicGrowsOnTrees-network library and programs: an adapter for LogicGrowsOnTrees that uses multiple processes running in a network
LogicGrowsOnTrees-processes library and programs: an adapter for LogicGrowsOnTrees that uses multiple processes for parallelism
minisat library: A Haskell bundle of the Minisat SAT solver
obdd library: Ordered Reduced Binary Decision Diagrams
picologic library and program: Utilities for symbolic predicate logic expressions
picosat library: Bindings to the PicoSAT solver
PropLogic library and program: Propositional Logic
pseudo-boolean library: Reading/Writing OPB/WBO files used in pseudo boolean competition
satchmo library: SAT encoding monad
satchmo-toysat library: toysat driver as backend for satchmo
structural-induction library: Instantiate structural induction schemas for algebraic data types
term-rewriting library: Term Rewriting Library
toysolver library and programs: Assorted decision procedures for SAT, Max-SAT, PB, MIP, etc
tpdb library: Data Type for Rewriting Systems
unification-fd library: Simple generic unification algorithms.

Logic Programming

unique-logic library: Solve simple simultaneous equations
unique-logic-tf library: Solve simple simultaneous equations

Logstash

hslogstash library: A library to work with, or as, a logstash server

LUA

lua-bytecode library: Library for loading Lua bytecode.

Machine Learning

affine-invariant-ensemble-mcmc library: General-purpose sampling
dtw library: (Fast) Dynamic Time Warping
genetics program: A Genetic Algorithm library
HLearn-algebra library: Algebraic foundation for homomorphic learning
HLearn-approximation library
HLearn-classification library
HLearn-datastructures library
HLearn-distributions library: Distributions for use with the HLearn library
HMM library: A hidden markov model library
hmm library: A hidden markov model library
hopfield library and programs: Hopfield Networks, Boltzmann Machines and Clusters
LambdaNet library: A configurable and extensible neural network library
learning-hmm library: Yet another library for hidden Markov models
mcmc-samplers library: Combinators for MCMC sampling
perceptron library: The perceptron learning algorithm.

Machine Vision

CV library: OpenCV based machine vision library
opencv-raw library: Raw Haskell bindings to OpenCV >= 2.0
simple-firewire library: Simplified interface for firewire cameras

Machines

machines-zlib library: Decompression support for machines

Mail

list-remote-forwards program: List all remote forwards for mail accounts stored in a SQL database.
mailbox-count program: Count mailboxes in a SQL database.
mailchimp-subscribe program: MailChimp subscription request handler

Manatee

manatee library and program: The Haskell/Gtk+ Integrated Live Environment
manatee-all library and program: Virtual package to install all Manatee packages.
manatee-anything library and program: Multithread interactive input/search framework for Manatee
manatee-browser library and program: Browser extension for Manatee.
manatee-core library: The core of Manatee.
manatee-curl library and program: Download Manager extension for Manatee.
manatee-editor library and program: Editor extension for Manatee.
manatee-filemanager library and program: File manager extension for Manatee.
manatee-imageviewer library and program: Image viewer extension for Manatee.
manatee-ircclient library and programs: IRC client extension for Manatee.
manatee-mplayer library and programs: Mplayer client extension for Manatee.
manatee-pdfviewer library and program: PDF viewer extension for Manatee.
manatee-processmanager library and program: Process manager extension for Manatee.
manatee-reader library and program: Feed reader extension for Manatee.
manatee-template library and program: Template code to create Manatee application.
manatee-terminal library and program: Terminal Emulator extension for Manatee.
manatee-welcome library and program: Welcome module to help user play Manatee quickly.

Map

olwrapper library and program: An OpenLayers JavaScript Wrapper and Webframework with snaplet-fay

MapReduce

compressed library: Compressed containers and reducers

Math

AC-Angle library: Angles in degrees and radians.
AC-Boolean library: Handle Boolean values generatically.
AC-Colour library: Efficient RGB colour types.
AC-HalfInteger library: Efficient half-integer type.
AC-Terminal library: Trivial wrapper over ansi-terminal.
AC-Vector library: Efficient geometric vectors and transformations.
AC-Vector-Fancy library: Fancy type-system stuff for AC-Vector
accelerate-arithmetic library: Linear algebra and interpolation using the Accelerate framework
accelerate-cublas library and program: Basic Linear Algebra using native CUBLAS library
accelerate-cufft library and programs: Accelerate frontend to the CUFFT library (Fourier transform)
accelerate-fftw library: Accelerate frontend to the FFTW library (Fourier transform)
accelerate-fourier library: Fast Fourier transform and convolution using the Accelerate framework
accelerate-fourier-benchmark program: Compare different implementations of the Fast Fourier Transform
ad library: Automatic Differentiation
AERN-Basics library and program: foundational type classes for approximating exact real numbers
AERN-Net library: Compositional lazy dataflow networks for exact real number computation
AERN-Real library: arbitrary precision real interval arithmetic
AERN-Real-Double library and programs: arbitrary precision real interval arithmetic
AERN-Real-Interval library: arbitrary precision real interval arithmetic
AERN-RnToRm library: polynomial function enclosures (PFEs) approximating exact real functions
AERN-RnToRm-Plot library: GL plotting of polynomial function enclosures (PFEs)
algebra library: Constructive abstract algebra
algebraic library: General linear algebra structures.
algebraic-classes library: Conversions between algebraic classes and F-algebras.
antimirov library and program: Define the language containment (=subtyping) relation on regulare expressions.
apportionment library: Round a set of numbers while maintaining its sum
ApproxFun-hs library: Function approximation
arb-fft library and program: Pure Haskell arbitrary length FFT library
arithmoi library: Efficient basic number-theoretic functions. Primes, powers, integer logarithms.
Baggins library: Tools for self-assembly
bayes-stack library: Framework for inferring generative probabilistic models with Gibbs sampling
bed-and-breakfast library: Efficient Matrix operations in 100% Haskell.
BerlekampAlgorithm library: Factorization of polynomials over finite field
besout library: Extended GCD of polynomials over F_p[x]
bindings-mpdecimal library: bindings to mpdecimal library
bindings-saga-cmd library and programs: Wrapping saga_cmd
blas library: Bindings to the BLAS library
blas-hs library: Low-level Haskell bindings to Blas.
boolsimplifier library: Simplification tools for simple propositional formulas.
braid library and program: Types and functions to work with braids and Khovanov homology.
buffon library: An implementation of Buffon machines.
burst-detection library: Burst detection algorithms
caffegraph library
calculator program: A calculator repl, with variables, functions & Mathematica like dynamic plots.
caldims library and program: Calculation tool and library supporting units
Cartesian library: Coordinate systems
casadi-bindings library: mid-level bindings to CasADi
casadi-bindings-control library: low level bindings to casadi-control
casadi-bindings-core library: autogenerated low level bindings to casadi
casadi-bindings-internal library: low level bindings to CasADi
casadi-bindings-ipopt-interface library: low level bindings to casadi-ipopt_interface
casadi-bindings-snopt-interface library: low level bindings to casadi-snopt_interface
cash library: the Computer Algebra SHell
casui program: Equation Manipulator
category-traced library: Traced monoidal categories
cayley-dickson library: Complex numbers, quaternions, octonions, sedenions, etc.
cf library: Exact real arithmetic using continued fractions
clac program: Simple CLI RPN calculator
clifford library and program: A Clifford algebra library
closure library: Depth- and breadth-first set closures
clumpiness library: Calculate the clumpiness of leaf properties in a tree
clustering library: High performance clustering algorithms
cmath library: A binding to the standard C math library
combinat library: Generate and manipulate various combinatorial objects.
combinat-diagrams library: Graphical representations for various combinatorial objects
combinatorics library: Efficient computation of common combinatoric functions.
commutative library: Commutative binary operations.
complex-generic library: complex numbers with non-mandatory RealFloat
complex-integrate library: A simple integration function to integrate a complex-valued complex functions
computational-algebra library: Well-kinded computational algebra library, currently supporting Groebner basis.
conjugateGradient library: Sparse matrix linear-equation solver
constructible library: Exact computation with constructible real numbers
constructive-algebra library: A library of constructive algebra.
ContextAlgebra library: Context Algebra
continued-fractions library: Continued fractions.
converge library: Limit operations for converging sequences
cplex-hs library: high-level CPLEX interface
crf-chain1 library: First-order, linear-chain conditional random fields
crf-chain1-constrained library: First-order, constrained, linear-chain conditional random fields
crf-chain2-generic library: Second-order, generic, constrained, linear conditional random fields
cubicspline library: Natural cubic spline interpolation.
curve25519 library: Fast implementations of the curve25519 elliptic curve primitives.
cyclotomic library: A subfield of the complex numbers for exact calculation.
data-category library: Category theory
data-interval library: Interval arithmetic for both open and closed intervals
data-nat library: data Nat = Zero | Succ Nat
Decimal library: Decimal numbers with variable precision
declarative library: DIY Markov Chains.
deeplearning-hs library and program: Deep Learning in Haskell
deka library: Decimal floating point arithmetic
deka-tests library and program: Tests for deka, decimal floating point arithmetic
derivation-trees library: Typeset Derivation Trees via MetaPost
dfrac library: A package for precise decimal arithmatic using rationals.
diagrams-solve library: Pure Haskell solver routines used by diagrams
DifferenceLogic library: A theory solver for conjunctions of literals in difference logic
digamma library: A (deprecated) implementation of the digamma function
dimensional library: Statically checked physical dimensions, using Type Families and Data Kinds.
dimensional-tf library: Statically checked physical dimensions, implemented using type families.
diophantine library: A quadratic diophantine equation solving library.
directed-cubical library: Finite directed cubical complexes and associated algorithms
Dist library: A Haskell library for probability distributions
DistanceTransform library: Distance transform function.
distribution library: Finite discrete probability distributions.
distribution-plot library: Easily plot distributions from the distribution package..
dozenal library: A Haskell library for using Dozenal (Duodecimal - Base 12) numbers.
DP library: Pragmatic framework for dynamic programming
dsp library and programs: Haskell Digital Signal Processing
dvda library: Efficient automatic differentiation and code generation
easyplot library: A tiny plotting library, utilizes gnuplot for plotting.
eigen library: Eigen C++ library (linear algebra: matrices, sparse matrices, vectors, ...
Eq program: Render math formula in ASCII, and perform some simplifications
EqualitySolver library: ...
equational-reasoning library: Proof assistant for Haskell using DataKinds & PolyKinds
erf library: The error function, erf, and related functions.
erf-native library: Native Haskell implementation of the interface from the erf package
estimator library: State-space estimation algorithms such as Kalman Filters
euler library: Mathematics utilities for Haskell
exact-combinatorics library: Efficient exact computation of combinatoric functions.
exact-real library: Exact real arithmetic
exp-pairs library: Linear programming over exponent pairs
explicit-determinant library: explicit computation of determinant of small matrices
extended-categories library: Extended Categories
extended-reals library: Extension of real numbers with positive/negative infinities
factory library and program: Rational arithmetic in an irrational world.
fad library: Forward Automatic Differentiation.
fadno-braids library: Braid representations in Haskell
fast-math library: Non IEEE-754 compliant compile-time floating-point optimisations
fft library: Bindings to the FFTW library.
fftwRaw library: Low level bindings to FFTW.
find-clumpiness library and program: Find the clumpiness of labels in a tree
finite-field library: Finite Fields
FirstOrderTheory library: Grammar and typeclass for first order theories
fixed-point library: Binary fixed-point arithmetic
fixed-point-vector library: Unbox instances for the fixed-point package
fixed-point-vector-space library: vector-space instances for the fixed-point package
fixed-precision library: Fixed Precision Arithmetic
fixedprec library: A fixed-precision real number type
fizz-buzz library: Functional Fizz/Buzz
flat-mcmc library: Painless general-purpose sampling.
fpnla library: A library for NLA operations
fpnla-examples library: Example implementations for FPNLA library
fptest programs: IEEE754r floating point conformance tests
fractals library: A collection of useful fractal curve encoders
free-functors library: Free functors, adjoint to functors that forget class constraints.
function-instances-algebra library: Instances of the Algebra.* classes for functions
game-probability library: Simple probability library for dice rolls, card games and similar
gamma library: Gamma function and related functions.
garepinoh library and programs: reverse prefix notation calculator and calculation library
GaussQuadIntegration library: Non-adaptive Gaussian quadrature for numeric integraton
geocalc library: Libary for calculating distances between two coordinates in WSG84
geom2d library: package for geometry in euklidean 2d space
GeomPredicates library: Geometric predicates
GeomPredicates-SSE library: Geometric predicates (Intel SSE)
glasso library: Graphical Lasso algorithm
glicko library: Glicko-2 implementation in Haskell.
glpk-hs library: Comprehensive GLPK linear programming bindings
gnuplot library and program: 2D and 3D plots using gnuplot
goal-core library and program: Core imports for Geometric Optimization Libraries.
goal-geometry library and programs: Scientific computing on geometric objects
goal-probability library and programs: Manifolds of probability distributions
goal-simulation library and programs: Mealy based simulation tools
gray-extended library: Gray encoding schemes
grid library: Tools for working with regular grids (graphs, lattices).
groups library: Haskell 98 groups
gsl-random library: Bindings the the GSL random number generation facilities.
gsl-random-fu library: Instances for using gsl-random with random-fu
gutenberg-fibonaccis library: The first 1001 Fibonacci numbers, retrieved from the Gutenberg Project.
haar library: Haar wavelet transforms
hahp library and program: Analytic Hierarchy Process
hascal library and program: A minimalistic but extensible and precise calculator
haskell-mpfr library: Correctly-rounded arbitrary-precision floating-point arithmetic
HaskellForMaths library: Combinatorics, group theory, commutative algebra, non-commutative algebra
HaskellLM library: Pure Haskell implementation of the Levenberg-Marquardt algorithm
hbayes library: Bayesian Networks
hblas library: Human friendly BLAS and Lapack bindings for Haskell.
hcg-minus library: haskell cg (minus)
hcg-minus-cairo library: haskell cg (minus) (cairo rendering)
hdr-histogram library: Haskell implementation of High Dynamic Range (HDR) Histograms
HERA library
HerbiePlugin library: automatically improve your code's numeric stability
hgeometric library: A geometric library with bindings to GPC.
hieraclus library: Automated clustering of arbitrary elements in Haskell.
hirt program: Calculates IRT 2PL and 3PL models
hlbfgsb library: Haskell binding to L-BFGS-B version 3.0
hmatrix library: Numeric Linear Algebra
hmatrix-banded library: HMatrix interface to LAPACK functions for banded matrices
hmatrix-glpk library: Linear Programming based on GLPK
hmatrix-gsl library: Numerical computation
hmatrix-gsl-stats library: GSL Statistics interface
hmatrix-mmap library: Memory map Vector from disk into memory efficiently
hmatrix-nipals library and program: NIPALS method for Principal Components Analysis on large data-sets.
hmatrix-quadprogpp library: Bindings to the QuadProg++ quadratic programming library
hmatrix-repa library: Adaptors for interoperability between hmatrix and repa
hmatrix-special library: Interface to GSL special functions
hmatrix-static library: hmatrix with vector and matrix sizes encoded in types
hmatrix-svdlibc library and program: SVDLIBC bindings for HMatrix
hmatrix-syntax library: MATLAB-like syntax for hmatrix vectors and matrices
hmatrix-tests library: Tests for hmatrix
hmm-hmatrix library: Hidden Markov Models using HMatrix primitives
hmpfr library: Haskell binding to the MPFR library
homeomorphic library: Homeomorphic Embedding Test
Homology library: Compute the homology of a chain complex
hopfield-networks library and program: Hopfield Networks for unsupervised learning in Haskell
hops program: Handy Operations on Power Series
hps-kmeans library: A nice implementation of the k-Means algorithm.
hR library: R bindings and interface
HROOT library: Haskell binding to ROOT RooFit modules
HROOT-core library: Haskell binding to ROOT Core modules
HROOT-graf library: Haskell binding to ROOT Graf modules
HROOT-hist library: Haskell binding to ROOT Hist modules
HROOT-io library: Haskell binding to ROOT IO modules
HROOT-math library: Haskell binding to ROOT Math modules
HsASA library: A haskell interface to Lester Ingber's adaptive simulating annealing code
hsignal library: Signal processing and EEG data analysis
hsilop program: RPN calculator
hstatistics library: Statistics
hTensor library: Multidimensional arrays and simple tensor computations.
ieee library: Utilities for dealing with IEEE floating point numbers
ieee754 library: Utilities for dealing with IEEE floating point numbers
interpolation library and programs: piecewise linear and cubic Hermite interpolation
intervals library: Interval Arithmetic
ipopt-hs library and program: haskell binding to ipopt and nlopt including automatic differentiation
ireal library: Real numbers and intervals with relatively efficient exact arithmetic.
iter-stats library: iteratees for statistical processing
jacobi-roots library: Roots of two shifted Jacobi polynomials (Legendre and Radau) to double precision
jalaali library: Convert Jalaali and Gregorian calendar systems to each other
jalla library: Higher level functions for linear algebra. Wraps BLAS and LAPACKE.
Kalman library: A slightly extended Kalman filter
kmeans-vector library and program: An implementation of the kmeans clustering algorithm based on the vector package
knots library and program: Khovanov homology computations
ks-test library: Kolmogorov distribution and Kolmogorov-Smirnov test.
l-bfgs-b library: Bindings to L-BFGS-B, ...
lagrangian library: Solve Lagrange multiplier problems
LargeCardinalHierarchy library: A transfinite cardinal arithmetic library including all known large cardinals
Lattices library: A library for lattices
lattices library: Fine-grained library for constructing and manipulating lattices
lazysplines library: Differential solving with lazy splines
levmar library: An implementation of the Levenberg-Marquardt algorithm
lfst library: L-Fuzzy Set Theory implementation in Haskell
lin-alg library: Low-dimensional matrices and vectors for graphics and physics
linda library: LINear Discriminant Analysis
linear library: Linear Algebra
linear-accelerate library: Instances to use linear vector spaces on accelerate backends
linear-algebra-cblas library and program: A linear algebra library with bindings to BLAS and LAPACK
linear-circuit library: Compute resistance of linear electrical circuits
linear-grammar library: A simple grammar for building linear equations and inclusive inequalities.
linear-vect library: A low-dimensional linear algebra library, operating on the Num typeclass
linearEqSolver library: Use SMT solvers to solve linear systems over integers and rationals
logfloat library: Log-domain floating point numbers
Logic library: Logic
logic-TPTP library: Import, export etc. for TPTP, a syntax for first-order logic
magico program: Compute solutions for Magico puzzle
magma library: magma is an algebraic structure consisting a set together with an binary operation.
manifold-random library: Sampling random points on general manifolds.
manifolds library: Coordinate-free hypersurfaces
math-functions library: Special functions and Chebyshev polynomials
matlab library: Matlab bindings and interface
matrix library: A native implementation of matrix operations.
matrix-market library: Read and write NIST Matrix Market files
matrix-market-pure library: Pure and composable reader and writer of the Matrix Market format.
maxent library: Compute Maximum Entropy Distributions
mcmc-samplers library: Combinators for MCMC sampling
mcmc-types library: Common types for sampling.
mdp library and programs: Tools for solving Markov Decision Processes.
MeanShift library: Mean shift algorithm
mersenne-random library: Generate high quality pseudorandom numbers using a SIMD Fast Mersenne Twister
mersenne-random-pure64 library: Generate high quality pseudorandom numbers purely using a Mersenne Twister
mfsolve library: Equation solver and calculator à la metafont
miniball library: Bindings to Miniball, a smallest enclosing ball library
mixed-strategies library and program: Find optimal mixed strategies for two-player games
modular-arithmetic library: A type for integers modulo some constant.
Modulo library: Modular arithmetic via Numeric-Prelude
monad-lrs library: a monad to calculate linear recursive sequence
Monocle library: Symbolic computations in strict monoidal categories with LaTeX output.
monoidplus library: Extra classes/functions about monoids
monoids library: Deprecated: Use 'reducers'
monte-carlo library: A monad and transformer for Monte Carlo calculations.
ms library: metric spaces
multiset-comb library: Combinatorial algorithms over multisets
mwc-probability library: Sampling function-based probability distributions.
mwc-random library: Fast, high quality pseudo random number generation
mwc-random-monad library: Monadic interface for mwc-random
nat library: Lazy binary natural numbers
natural-numbers library: Natural numbers
NearContextAlgebra program: Context Algebra of near
network-topic-models programs: A few network topic model implementations for bayes-stack
nimber library: Finite nimber arithmetic
Noise library: A Haskell coherent noise generator based on libnoise
non-negative library: Non-negative numbers
nonlinear-optimization library: Various iterative algorithms for optimization of nonlinear functions.
nonlinear-optimization-ad library and program: Wrapper of nonlinear-optimization package for using with AD package
normaldistribution library: Minimum fuss normally distributed random values.
np-extras library: NumericPrelude extras
np-linear library: Linear algebra for the numeric-prelude framework
NTRU library: NTRU Cryptography
number library: A library for real numbers
numbers library: Various number types
NumberSieves library: Number Theoretic Sieves: primes, factorization, and Euler's Totient
NumberTheory library: A library for number theoretic computations, written in Haskell.
numeric-extras library: Useful tools from the C standard library
numeric-prelude library and programs: An experimental alternative hierarchy of numeric type classes
numeric-quest library: Math and quantum mechanics
numeric-tools library: Collection of numerical tools for integration, differentiation etc.
numericpeano library: Peano numbers with attendant bells and whistles.
numtype library: Type-level (low cardinality) integers.
numtype-dk library: Type-level integers, using TypeNats, Data Kinds, and Closed Type Families.
numtype-tf library: Type-level (low cardinality) integers, implemented using type families.
nurbs library: NURBS
oeis library: Interface to the Online Encyclopedia of Integer Sequences (OEIS)
Operads library: Groebner basis computation for Operads.
optimization library: Numerical optimization
Ordinals library: Ordinal arithmetic
Paillier library: a simple Paillier cryptosystem
ParserFunction library: Parse and evaluate mathematical expressions.
peano library: Peano numbers
pell library: Package to solve the Generalized Pell Equation.
permutation library: A library for permutations and combinations.
plot-gtk-ui library: A quick way to use Mathematica like Manipulation abilities
plot-lab program: A plotting tool with Mathematica like Manipulation abilities
poker-eval library: Binding to libpoker-eval
polar library: Complex numbers in polar form
polynom library: Polynomial types and operations
polynomial library: Polynomials
polynomials-bernstein library: A solver for systems of polynomial equations in bernstein form
probability library: Probabilistic Functional Programming
probable library: Easy and reasonably efficient probabilistic programming and random generation
ProxN library: Proximity sets in N dimensions
pure-fft library: Fast Fourier Transform
qd library: double-double and quad-double number type via libqd
qd-vec library: 'Vec' instances for 'qd' types
qhull-simple library: Simple bindings to Qhull, a library for computing convex hulls
quadratic-irrational library: An implementation of quadratic irrationals
quantities library and program: Unit conversion and manipulation library.
rad library: Reverse Automatic Differentiation.
random-extras library: Additional functions for random values.
random-fu library: Random number generation
random-hypergeometric library: Random variate generation from hypergeometric distributions
random-source library: Generic basis for random number generators
range-space library: A Range type with vector-space instances
RANSAC library: The RANSAC algorithm for parameter estimation.
ratio-int library: Fast specialisation of Data.Ratio for Int.
rclient library: Haskell client for Rserve
reducers library: Semigroups, specialized containers and a general map/reduce framework
regress library: Linear and logistic regression through automatic differentiation
resistor-cube program: Compute total resistance of a cube of resistors
rivers library: Rivers are like Streams, but different.
roots library: Root-finding algorithms (1-dimensional)
rounding library: Explicit floating point rounding mode wrappers
rsagl-math library: The RogueStar Animation and Graphics Library: Mathematics
ruff library: relatively useful fractal functions
rvar library: Random Variables
sampling library and program: Sample values from collections.
sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.
sbvPlugin library: Formally prove properties of Haskell programs using SBV/SMT
science-constants library: Mathematical/physical/chemical constants
science-constants-dimensional library: Mathematical/physical/chemical constants
sde-solver library: Distributed SDE solver
search library: Infinite search in finite time with Hilbert's epsilon
semigroups library: Anything that associates
semigroups-actions library: Semigroups actions
semiring program: Semirings, ring-like structures used for dynamic programming applications
semiring-simple library: A module for dealing with semirings.
set-cover library and programs: Solve exact set cover problems like Sudoku, 8 Queens, Soma Cube, Tetris Cube
sets library: Various set implementations in Haskell.
sfmt library: SIMD-oriented Fast Mersenne Twister(SFMT) binding.
SG library: Small geometry library for dealing with vectors and collision detection
sgd library: Stochastic gradient descent
sign library: Arithmetic over signs and sets of signs
simd library: simple interface to GHC's SIMD instructions
simple-smt library: A simple way to interact with an SMT solver process.
simple-vec3 library: Three-dimensional vectors of doubles with basic operations
simplex-basic library: Very basic simplex implementation.
sloane program: A command line interface to Sloane's OEIS.
Smooth library: A tiny, lazy SMT solver
som library: Self-Organising Maps.
sparse-lin-alg library: Effective linear algebra on sparse matrices
spatial-math library: 3d math including quaternions/euler angles/dcms and utility functions
spe library: Combinatorial species lite
species library: Computational combinatorial species
speedy-slice library: Speedy slice sampling.
spline3 program: A parallel implementation of the Sorokina/Zeilfelder spline scheme.
splines library: B-Splines, other splines, and NURBS.
spsa library: Simultaneous Perturbation Stochastic Approximation Optimization Algorithm
stable-maps library: Heterogeneous maps keyed by StableNames
statistics library: A library of statistical types, data, and functions
statistics-dirichlet library: Functions for working with Dirichlet densities and mixtures on vectors.
statistics-fusion library: An implementation of high performance, minimal statistics functions
statistics-hypergeometric-genvar library: Random variate generation from hypergeometric distributions
statistics-linreg library: Linear regression between two samples, based on the 'statistics' package.
stats program: command line statistics
svm-light-utils library: Parsers and formatters for the SVMlight input file format
sym library: Permutations, patterns, and statistics
sym-plot library: Plot permutations; an addition to the sym package
symengine-hs library and program: SymEngine symbolic mathematics engine for Haskell
tau library: Tau, the ratio between any circle's circumference and radius.
tensor library: A completely type-safe library for linear algebra
terntup library: a ternary library
th-cas library: Compile-time CAS(Computer Algebra System)
theta-functions library: Theta-functions implemented as trigonometric series
tilings library: substitution tilings
tropical library: A library for tropical mathematics.
type-natural library: Type-level natural and proofs of their properties.
type-settheory library: Sets and functions-as-relations in the type system
uncertain library: Manipulating numbers with inherent experimental/measurement uncertainty
units library: A domain-specific type system for dimensional analysis
unittyped library: An extendable library for type-safe computations including units.
variable-precision library: variable-precision floating point
Vec library: Fixed-length lists and low-dimensional linear algebra.
Vec-Boolean library: Provides Boolean instances for the Vec package
Vec-OpenGLRaw library: Instances and functions to interoperate Vec and OpenGL.
Vec-Transform library: This package is obsolete
vect library: A low-dimensional linear algebra library, tailored to computer graphics.
vect-floating library: A low-dimensional linear algebra library, operating on the Floating typeclass
vect-floating-accelerate library: Accelerate instances for vect-floating types
vect-opengl library: OpenGL support for the `vect' low-dimensional linear algebra library.
vector-fftw library: A binding to the fftw library for one-dimensional vectors.
vector-space library: Vector & affine spaces, linear maps, and derivatives
vector-space-map library: vector-space operations for finite maps using Data.Map
vector-space-opengl library: Instances of vector-space classes for OpenGL types
vector-space-points library: A type for points, as distinct from vectors.
vowpal-utils library: Vowpal Wabbit utilities
WeberLogic library and program: Logic interpreter
wigner-symbols library: CG coefficients and Wigner symbols.
xorshift library: Haskell implementation of the xorshift random generator.
Xorshift128Plus library: Pure haskell implementation of xorshift128plus random number generator.
yices library: Haskell programming interface to Yices SMT solver
yices-easy library: Simple interface to the Yices SMT (SAT modulo theories) solver.
yices-painless library: An embedded language for programming the Yices SMT solver
z3 library and program: Bindings for the Z3 Theorem Prover
ZEBEDDE library: Polymer growth simulation method

Mathematics

LargeCardinalHierarchy library: A transfinite cardinal arithmetic library including all known large cardinals
ordered library: A definition of Posets.

Maths

LargeCardinalHierarchy library: A transfinite cardinal arithmetic library including all known large cardinals
planar-graph library: A representation of planar graphs

Media

ffmpeg-tutorials programs: Tutorials on ffmpeg usage to play video/audio
gstreamer library: Binding to the GStreamer open source multimedia framework.
hoovie program: Haskell Media Server
hs-ffmpeg library: Bindings to FFMPEG library
mpris library: Interface for MPRIS
pontarius-mediaserver program: Extended Personal Media Network (XPMN) media server
pontarius-xpmn library: Extended Personal Media Network (XPMN) library
temporal-media library: data types for temporal media
xine library: Bindings to xine-lib

Medical

dicom library: ...
isdicom library and program: An executable and library to determine if a file is a DICOM file

Memoization

XSaiga library and program: An implementation of a polynomial-time top-down parser suitable for NLP

Memory

memory library: memory and related abstraction stuff

Message-Oriented

courier library and programs: A message-passing library for simplifying network applications

Message-Oriented Middleware

patterns library: Common patterns in message-oriented applications
stomp-conduit library: Stompl Conduit Client
stomp-patterns library: Stompl MOM Stomp Patterns
stomp-queue library: Stompl Client Library
stompl library: Stomp Parser and Utilities

Metalanguage

ebnf-bff library and program: Parser combinators & EBNF, BFFs!

Metrics

metricsd-client library: Client for the metrics aggregator Metricsd
nagios-check library: Package for writing monitoring plugins
network-metrics library: Send metrics to Ganglia, Graphite, and statsd.
prometheus library: Prometheus Haskell Client

Middleware

Hermes library: Message-based middleware layer
lambda-bridge library and program: A bridge from Haskell (on a CPU) to VHDL on a FPGA.
persistent-map library: A thread-safe (STM) persistency interface for finite map types.

Minecraft

mcpi library and programs: Connect to MineCraft running on a Raspberry PI.

Miscellaneous

reexport-crypto-random library

Mobile

push-notify library: A server-side library for sending push notifications.
push-notify-ccs library: ...
push-notify-general library: A general library for sending/receiving push notif. through dif. services.

Model

clafer library and program: Compiles Clafer models to other formats: Alloy, JavaScript, JSON, HTML, Dot.
claferIG library and program: claferIG is an interactive tool that generates instances of Clafer models.

Monad

cond library: Basic conditional and boolean operators with monadic variants.
exception-monads-fd library: Exception monad transformer instances for monads-fd classes.
exception-monads-tf library: Exception monad transformer instances for monads-tf classes.
exception-mtl library: Exception monad transformer instances for mtl classes.
exception-transformers library: Type classes and monads for unchecked extensible exceptions.
exceptions library: Extensible optionally-pure exceptions
indexed-free library: indexed monads for free
monad-connect library: Transformer for TCP connection with TLS and SOCKS support
monad-hash library: Monad transformer for incremental hashing
monad-memo library: Memoization monad transformer
MonadCompose library: Methods for composing monads.
pipes-errors library: Integration between pipes and errors
set-monad library: Set monad
tagged-exception-core library: Reflect exceptions using phantom types.
time-out library: Execute a computation with a timeout
views library: Views allow you to run a State monad on part of a state.

Monadic Regions

IOR library: Region based resource management for the IO monad.
monad-stlike-io library: ST-like monad capturing variables to regions and supporting IO.
monad-stlike-stm library: ST-like monad capturing variables to regions and supporting STM.
regional-pointers library: Regional memory pointers
regions library: Provides the region monad for safely opening and working with scarce resources.
regions-monadsfd library: Monads-fd instances for the RegionT monad transformer
regions-monadstf library: Monads-tf instances for the RegionT monad transformer
regions-mtl library: mtl instances for the RegionT monad transformer
safer-file-handles library: Type-safe file handling
safer-file-handles-bytestring library: Extends safer-file-handles with ByteString operations
safer-file-handles-text library: Extends safer-file-handles with Text operations
usb-safe library: Type-safe communication with USB devices.

MonadIO

stm-lifted library: Software Transactional Memory lifted to MonadIO

Monads

abstract-par library: Type classes generalizing the functionality of the 'monad-par' library.
atrans library: A small collection of monad (transformer) instances.
backward-state library: A state monad that runs the state in reverse through the computation
category-extras library: A meta-package documenting various packages inspired by category theory
compose-trans library: Composable monad transformers
Consumer library: A monad and monad transformer for consuming streams
control-monad-exception library: Explicitly typed, checked exceptions with stack traces
control-monad-exception-monadsfd library: Monads-fd instances for the EMT exceptions monad transformer
control-monad-exception-monadstf library: Monads-tf instances for the EMT exceptions monad transformer
control-monad-exception-mtl library: MTL instances for the EMT exceptions monad transformer
control-monad-failure library: A class for monads which can fail with an error. (deprecated)
control-monad-failure-mtl library: A class for monads which can fail with an error for mtl 1 (deprecated)
control-monad-free library: Free monads and monad transformers
contstuff library: Fast, easy to use CPS-based monad transformers
contstuff-monads-tf library: ContStuff instances for monads-tf transformers (deprecated)
contstuff-transformers library: Deprecated interface between contstuff 0.7.0 and the transformers package
csp library: Discrete constraint satisfaction problem (CSP) solver.
data-accessor-monadLib library: Accessor functions for monadLib's monads
database-study library: Demonstrate how a database can be implemented the functional way
effect-monad library: Embeds effect systems into Haskell using parameteric effect monads
effective-aspects library: A monadic embedding of aspect oriented programming
effective-aspects-mzv library: A monadic embedding of aspect oriented programming, using "Monads, ...
effects library: Computational Effects
effects-parser library: Parser Effect for the Control.Effects Library
either library: An either monad transformer
explicit-sharing library: Explicit Sharing of Monadic Effects
failure library: A simple type class for success/failure computations. (deprecated)
free library: Monads for free
free-game library: Create games for free
free-vl library and program: van Laarhoven encoded Free Monad with Extensible Effects
hdph library and programs: Haskell distributed parallel Haskell
hofix-mtl library: defining @mtl@-ready monads as * -> * fixed-points
hsmisc library: A collection of miscellaneous modules
iException library: Version of Control.Exception using InterleavableIO.
infinite-search library: Exhaustively searchable infinite sets.
interleavableGen program: Generates a version of a module using InterleavableIO
interleavableIO library: Use other Monads in functions that asks for an IO Monad.
ixmonad library: Embeds effect systems into Haskell using parameteric effect monads
kan-extensions library: Kan extensions, Kan lifts, various forms of the Yoneda lemma, and (co)density (co)monads
lazyio library and program: Run IO actions lazily while respecting their order
level-monad library: Non-Determinism Monad for Level-Wise Search
meta-par library: Provides the monad-par interface, but based on modular scheduler "mix-ins".
monad-coroutine library: Coroutine monad transformer for suspending and resuming monadic computations
monad-interleave library: Monads with an unsaveInterleaveIO-like operation.
monad-par library: A library for parallel programming based on a monad
monad-par-extras library: Combinators and extra features for Par monads
monad-parallel library: Parallel execution of monadic computations
monad-parallel-progressbar library: Parallel execution of monadic computations with a progress bar
monad-products library: Monad products
monad-ran library: Fast monads and monad transformers
monad-st library: Provides a MonadST class
monad-state library: Utility library for monads, particularly those involving state.
monad-stlike-io library: ST-like monad capturing variables to regions and supporting IO.
monad-stlike-stm library: ST-like monad capturing variables to regions and supporting STM.
monad-supply library: Stateful supply monad.
monad-tx library: A transactional state monad.
MonadLab library and program: Automatically generate layered monads
monadLib library: A collection of monad transformers.
monadLib-compose library: Arrow-like monad composition for monadLib.
monadloc library: A class for monads which can keep a monadic call trace
monadloc-pp program: A preprocessor for generating monadic call traces
mstate library: MState: A consistent State monad for concurrent applications.
mtl-c library: Very strict CPS'd transformers
nondeterminism library: A monad and monad transformer for nondeterministic computations.
operational library and program: Implementation of difficult monads made easy with operational semantics.
pqueue-mtl library: Fully encapsulated monad transformers with queuelike functionality.
probability library: Probabilistic Functional Programming
representable-functors library: Representable functors
representable-tries library: Tries from representations of polynomial functors
resumable-exceptions library: A monad transformer for resumable exceptions
rhythm-game-tutorial programs: Haskell rhythm game tutorial
stateful-mtl library: Typeclass instances for monad transformer stacks with an ST thread at the bottom.
statethread library: The ST monad and STRefs
STMonadTrans library: A monad transformer version of the ST monad
stream-monad library and program: Simple, Fair and Terminating Backtracking Monad
tagged-exception-core library: Reflect exceptions using phantom types.
Tainted library: Tainted type, and associated operations
transformers-compose library: Arrow-like / category-like composition for transformers.
tree-monad library: Non-Determinism Monad for Tree Search
TreeT library: Transformer for Data.Tree
wl-pprint-extras library: A free monad based on the Wadler/Leijen pretty printer
wl-pprint-terminfo library: A color pretty printer with terminfo support
ZFS library: Oleg's Zipper FS

Monitoring

metricsd-client library: Client for the metrics aggregator Metricsd
nagios-check library: Package for writing monitoring plugins
network-metrics library: Send metrics to Ganglia, Graphite, and statsd.
pagerduty library: Client library for PagerDuty Integration and REST APIs.
prometheus library: Prometheus Haskell Client
statgrab library: Collect system level metrics and statistics

Multimedia

manatee-mplayer library and programs: Mplayer client extension for Manatee.
mpvguihs program: A minimalist mpv GUI written in I/O heavy Haskell.

Multimedia Player

manatee-mplayer library and programs: Mplayer client extension for Manatee.

Mumeric.Statistics

hstats library: Statistical Computing in Haskell

Murmur

murmur3 library: Pure Haskell implementation of the MurmurHash3 x86_32 algorithm.

Music

abcnotation library: Haskell representation and parser for ABC notation.
alsa library: Binding to the ALSA Library API.
alsa-core library: Binding to the ALSA Library API (Exceptions).
alsa-gui programs: Some simple interactive programs for sending MIDI control messages via ALSA
alsa-midi library and programs: Bindings for the ALSA sequencer API (MIDI stuff)
alsa-pcm library and programs: Binding to the ALSA Library API (PCM audio).
alsa-pcm-tests programs: Tests for the ALSA audio signal library.
alsa-seq library and programs: Binding to the ALSA Library API (MIDI sequencer).
alsa-seq-tests programs: Tests for the ALSA sequencer library.
billboard-parser library and program: A parser for the Billboard chord dataset
conductive-base library: a library for live coding and real-time musical applications
conductive-clock library: a library for displaying musical time in a terminal-based clock
conductive-hsc3 library: a library with examples of using Conductive with hsc3
conductive-song library: a library of functions which are useful for composing music
csound-catalog library: a gallery of Csound instruments.
csound-expression library: library to make electronic music
csound-expression-dynamic library: dynamic core for csound-expression library
csound-expression-opcodes library: opcodes for the library csound-expression
csound-expression-typed library: typed core for the library csound-expression
csound-sampler library: A musical sampler based on Csound
FComp library and program: Compose music
gulcii program: graphical untyped lambda calculus interactive interpreter
hamusic library and programs: Library to handle abstract music
HarmTrace library and program: Harmony Analysis and Retrieval of Music
HarmTrace-Base library: Parsing and unambiguously representing musical chords.
haskore library and programs: The Haskore Computer Music System
haskore-realtime library: Routines for realtime playback of Haskore songs
haskore-supercollider library and programs: Haskore back-end for SuperCollider
haskore-synthesizer library and program: Music rendering coded in Haskell
haskore-vintage library: The February 2000 version of Haskore.
hCsound library: interface to CSound API
hemkay program: A module music mixer and player
hemkay-core library: A device independent module music mixer
hly library: Haskell LilyPond
hmt library: Haskell Music Theory
hmt-diagrams library: Haskell Music Theory Diagrams
hts library: Haskell Music Typesetting
instrument-chord library: Render Instrument Chords
launchpad-control library and program: High and low-level interface to the Novation Launchpad midi controller.
lilypond library: Bindings to Lilypond
live-sequencer library and programs: Live coding of MIDI music
lord library and program: A command line interface to online radios.
loris library: interface to Loris API
midair library: Hot-swappable FRP
midi library: Handling of MIDI messages and files
midi-alsa library: Convert between datatypes of the midi and the alsa packages
midi-util library: Utility functions for processing MIDI files
midimory program: A Memory-like (Concentration, Pairs, ...) game for tones
music-articulation library: Abstract representation of musical articulation.
music-diatonic library: Implementation of basic western musical theory objects.
music-dynamics library: Abstract representation of musical dynamics.
music-dynamics-literal library: Overloaded dynamics literals.
music-graphics library: Diagrams-based visualization of musical data structures.
music-parts library: Musical instruments, parts and playing techniques.
music-pitch library: Musical pitch representation.
music-pitch-literal library: Overloaded pitch literals.
music-preludes library and programs: Some useful preludes for the Music Suite.
music-score library: Musical score and part representation.
music-sibelius library: Interaction with Sibelius.
music-suite library: A set of libraries for composition, analysis and manipulation of music.
musicxml library: MusicXML format encoded as Haskell type and functions of reading and writting.
musicxml2 library: A representation of the MusicXML format.
reactive-balsa library: Programmatically edit MIDI events via ALSA and reactive-banana
sharc-timbre library: ...
streamed library: Programmatically edit MIDI event streams via ALSA
synthesizer-alsa library and programs: Control synthesizer effects via ALSA/MIDI
synthesizer-llvm library and programs: Efficient signal processing using runtime compilation
synthesizer-midi library and programs: Render audio signals from MIDI files or realtime messages
temporal-csound library: library to make electronic music, ...
temporal-media library: data types for temporal media
temporal-music-notation library: music notation
temporal-music-notation-demo library: generates midi from score notation.
temporal-music-notation-western library: western music notation
vivid library: Sound synthesis with SuperCollider
x-dsp library: A embedded DSL for manipulating DSP languages in Haskell
YampaSynth programs: Software synthesizer
zmidi-core library: Read and write MIDI files.
zmidi-score library: Representing MIDI a simple score.

MusicBrainz

musicbrainz-email library and programs: Send an email to all MusicBrainz editors

Mutable State

foreign-var library: Encapsulating mutatable state in external libraries

NA

tempo library and programs: Command-line tool to log time-tracking information into JIRA Tempo plugin

Natural Language Processing

adict library: Approximate dictionary searching
alpino-tools library and programs: Alpino data manipulation tools
antfarm library and program: Referring expressions for definitions
arpa library and program: Library for reading ARPA n-gram models
brillig library and program: Simple part of speech tagger
cabocha library
chatter library and programs: A library of simple NLP algorithms.
cndict library: Chinese/Mandarin <-> English dictionary, Chinese lexer.
colada library and program: Colada implements incremental word class class induction using online LDA
concraft library and program: Morphological disambiguation based on constrained CRFs
concraft-hr library and program: Part-of-speech tagger for Croatian
concraft-pl library and program: Morphological tagger for Polish
crf-chain2-tiers library: Second-order, tiered, constrained, linear conditional random fields
data-named library: Data types for named entities
delta-h library and program: Online entropy-based model of lexical category acquisition.
detrospector program: Markov chain text generator
DP library: Pragmatic framework for dynamic programming
electrum-mnemonic library: easy to remember mnemonic for a high-entropy value
estimators library: Tool for managing probability estimation
FM-SBLEX programs: A set of computational morphology tools for Swedish diachronic lexicons.
fullstop library and program: Simple sentence segmenter
GenI library and program: A natural language generator (specifically, an FB-LTAG surface realiser)
geni-gui library and program: GenI graphical user interface
geni-util library and program: Companion tools for use with the GenI surface realiser
geniconvert program: Conversion utility for the GenI generator
geniserver library and program: Simple HTTP server for GenI results
gf library and programs: Grammatical Framework
hist-pl library and program: Umbrella package for the historical dictionary of Polish
hist-pl-dawg library: A generic, DAWG-based dictionary
hist-pl-fusion library: Merging historical dictionary with PoliMorf
hist-pl-lexicon library: A binary representation of the historical dictionary of Polish
hist-pl-lmf library: LMF parsing for the historical dictionary of Polish
hist-pl-transliter library: A simple EDSL for transliteration rules
hist-pl-types library: Types in the historical dictionary of Polish
hs-gizapp library: Haskell wrapper around the GIZA++ toolkit.
koellner-phonetic library: "map German words to code representing pronunciation"
language-spelling library: Various tools to detect/correct mistakes in words
lda library: Online Latent Dirichlet Allocation
libGenI library: A natural language generator (specifically, an FB-LTAG surface realiser)
LinguisticsTypes library: Collection of types for natural language
logfloat library: Log-domain floating point numbers
luis-client library: An unofficial client for the LUIS NLP service.
mecab library: A Haskell binding to MeCab
minimorph library: English spelling functions with an emphasis on simplicity.
miniutter library: Simple English clause creation from arbitrary words
moan library: Language-agnostic analyzer for positional morphosyntactic tags
monad-ox library: Monad for observation extraction
morfette program: A tool for supervised learning of morphology
morfeusz library: Bindings to the morphological analyser Morfeusz
multext-east-msd library: MULTEXT-East morphosyntactic descriptors
nanq program: Performs 漢字検定 (Japan Kanji Aptitude Test) level analysis on given Kanji.
NaturalLanguageAlphabets library: Simple scoring schemes for word alignments
nerf library and program: Nerf, the named entity recognition tool based on linear-chain CRFs
NGrams program: Simple application for calculating n-grams using Google.
nkjp library and programs: Manipulating the National Corpus of Polish (NKJP)
nlp-scores library: Scoring functions commonly used for evaluation in NLP and IR
nlp-scores-scripts programs: NLP scoring command-line programs
numerals library: Convert numbers to number words
numerals-base library: Convert numbers to number words
partage library: Parsing factorized
penn-treebank library: Tools for manipulating the Penn TreeBank
phonetic-code library: Phonetic codes: Soundex and Phonix
polh-lexicon library and programs: A library for manipulating the historical dictionary of Polish (deprecated)
polimorf library: Working with the PoliMorf dictionary
PTQ programs: An implementation of Montague's PTQ.
punkt library: Multilingual unsupervised sentence tokenization with Punkt.
rake library: Rapid Automatic Keyword Extraction (RAKE)
romkan library: Japanese Romaji <-> Japanese Kana conversion library
semiring program: Semirings, ring-like structures used for dynamic programming applications
sequor library and programs: A sequence labeler based on Collins's sequence perceptron.
snowball library: Bindings to the Snowball library.
Sonnex library: Sonnex is an alternative to Soundex for french language
stemmer library: Haskell bindings to the Snowball stemming library.
swift-lda library: Online sampler for Latent Dirichlet Allocation
tagset-positional library: Positional tags and tagsets
textocat-api library: Unofficial Haskell SDK for Textocat API -- http://textocat.com
tokenize library: Simple tokenizer for English text.
toktok library and programs
WordNet library: Haskell interface to the WordNet database
WordNet-ghc74 library: Haskell interface to the WordNet database
XSaiga library and program: An implementation of a polynomial-time top-down parser suitable for NLP

Net

Weather library: Library for interacting with the Weather Underground JSON API.

Network

adb library: Android Debug Bridge (ADB) protocol
adhoc-network library: Ad-hoc P2P network protocol
agentx library and program: AgentX protocol for write SNMP subagents
AGI library: A library for writing AGI scripts for Asterisk
airbrake library: An Airbrake notifier for Haskell
amazon-emailer programs: A queue daemon for Amazon's SES with a PostgreSQL table as a queue.
amazon-emailer-client-snap library: Client library for amazon-emailer daemon
amazonka library: Comprehensive Amazon Web Services SDK.
amazonka-apigateway library: Amazon API Gateway SDK.
amazonka-autoscaling library: Amazon Auto Scaling SDK.
amazonka-certificatemanager library: Amazon Certificate Manager SDK.
amazonka-cloudformation library: Amazon CloudFormation SDK.
amazonka-cloudfront library: Amazon CloudFront SDK.
amazonka-cloudhsm library: Amazon CloudHSM SDK.
amazonka-cloudsearch library: Amazon CloudSearch SDK.
amazonka-cloudsearch-domains library: Amazon CloudSearch Domain SDK.
amazonka-cloudtrail library: Amazon CloudTrail SDK.
amazonka-cloudwatch library: Amazon CloudWatch SDK.
amazonka-cloudwatch-events library: Amazon CloudWatch Events SDK.
amazonka-cloudwatch-logs library: Amazon CloudWatch Logs SDK.
amazonka-codecommit library: Amazon CodeCommit SDK.
amazonka-codedeploy library: Amazon CodeDeploy SDK.
amazonka-codepipeline library: Amazon CodePipeline SDK.
amazonka-cognito-identity library: Amazon Cognito Identity SDK.
amazonka-cognito-sync library: Amazon Cognito Sync SDK.
amazonka-config library: Amazon Config SDK.
amazonka-core library: Core data types and functionality for Amazonka libraries.
amazonka-datapipeline library: Amazon Data Pipeline SDK.
amazonka-devicefarm library: Amazon Device Farm SDK.
amazonka-directconnect library: Amazon Direct Connect SDK.
amazonka-dms library: Amazon Database Migration Service SDK.
amazonka-ds library: Amazon Directory Service SDK.
amazonka-dynamodb library: Amazon DynamoDB SDK.
amazonka-dynamodb-streams library: Amazon DynamoDB Streams SDK.
amazonka-ec2 library: Amazon Elastic Compute Cloud SDK.
amazonka-ecr library: Amazon EC2 Container Registry SDK.
amazonka-ecs library: Amazon EC2 Container Service SDK.
amazonka-efs library: Amazon Elastic File System SDK.
amazonka-elasticache library: Amazon ElastiCache SDK.
amazonka-elasticbeanstalk library: Amazon Elastic Beanstalk SDK.
amazonka-elasticsearch library: Amazon Elasticsearch Service SDK.
amazonka-elastictranscoder library: Amazon Elastic Transcoder SDK.
amazonka-elb library: Amazon Elastic Load Balancing SDK.
amazonka-emr library: Amazon Elastic MapReduce SDK.
amazonka-gamelift library: Amazon GameLift SDK.
amazonka-glacier library: Amazon Glacier SDK.
amazonka-iam library: Amazon Identity and Access Management SDK.
amazonka-importexport library: Amazon Import/Export SDK.
amazonka-inspector library: Amazon Inspector SDK.
amazonka-iot library: Amazon IoT SDK.
amazonka-iot-dataplane library: Amazon IoT Data Plane SDK.
amazonka-kinesis library: Amazon Kinesis SDK.
amazonka-kinesis-firehose library: Amazon Kinesis Firehose SDK.
amazonka-kms library: Amazon Key Management Service SDK.
amazonka-lambda library: Amazon Lambda SDK.
amazonka-marketplace-analytics library: Amazon Marketplace Commerce Analytics SDK.
amazonka-marketplace-metering library: Amazon Marketplace Metering SDK.
amazonka-ml library: Amazon Machine Learning SDK.
amazonka-opsworks library: Amazon OpsWorks SDK.
amazonka-rds library: Amazon Relational Database Service SDK.
amazonka-redshift library: Amazon Redshift SDK.
amazonka-route53 library: Amazon Route 53 SDK.
amazonka-route53-domains library: Amazon Route 53 Domains SDK.
amazonka-s3 library: Amazon Simple Storage Service SDK.
amazonka-sdb library: Amazon SimpleDB SDK.
amazonka-ses library: Amazon Simple Email Service SDK.
amazonka-sns library: Amazon Simple Notification Service SDK.
amazonka-sqs library: Amazon Simple Queue Service SDK.
amazonka-ssm library: Amazon Simple Systems Management Service SDK.
amazonka-storagegateway library: Amazon Storage Gateway SDK.
amazonka-sts library: Amazon Security Token Service SDK.
amazonka-support library: Amazon Support SDK.
amazonka-swf library: Amazon Simple Workflow Service SDK.
amazonka-test library: Common functionality for Amazonka library test-suites.
amazonka-waf library: Amazon WAF SDK.
amazonka-workspaces library: Amazon WorkSpaces SDK.
AMI library: Low-level bindings for Asterisk Manager Interface (AMI).
amqp library and program: Client library for AMQP servers (currently only RabbitMQ)
amqp-conduit library: Conduit bindings for AMQP (see amqp package)
anticiv library and program: This is an IRC bot for Mafia and Resistance.
apelsin program: Server and community browser for the game Tremulous
api-builder library: Library for easily building REST API wrappers in Haskell
api-tools library and program: DSL for generating API boilerplate and docs
ApplePush library and program: Library for Apple Push Notification Service
archiver library and program: Archive supplied URLs in WebCite & Internet Archive
arxiv library: A client for the Arxiv API
avahi library: Minimal DBus bindings for Avahi daemon (http://avahi.org)
aws library and programs: Amazon Web Services (AWS) for Haskell
aws-cloudfront-signer library: For signing AWS CloudFront HTTP URL requests
aws-dynamodb-streams library: Haskell bindings for Amazon DynamoDB Streams
aws-ec2 library and programs: AWS EC2/VPC, ELB and CloudWatch client library for Haskell
aws-elastic-transcoder library and program: Haskell suite for the Elastic Transcoder service
aws-general library: Bindings for Amazon Web Services (AWS) General Reference
aws-kinesis library: Bindings for Amazon Kinesis
aws-lambda library: Haskell bindings for AWS Lambda
aws-performance-tests library and program: Performance Tests for the Haskell bindings for Amazon Web Services (AWS)
aws-sign4 library: Amazon Web Services (AWS) Signature v4 HTTP request signer
aws-sns library: Bindings for AWS SNS Version 2013-03-31
azure-service-api library: Haskell bindings for the Microsoft Azure Service Management API
Barracuda library and program: An ad-hoc P2P chat program
battlenet library: API client for Battle.Net
battlenet-yesod library: Yesod integration for the battlenet package
bet library and program: Betfair API bindings. Bet on sports on betting exchanges.
binary-protocol-zmq library and program: Monad to ease implementing a binary network protocol over ZeroMQ
bitcoin-api library: Provides access to the RPC API of Bitcoin Core
bitcoin-api-extra library: Higher level constructs on top of the bitcoin-api package
bitcoin-block library: Utility functions for manipulating bitcoin blocks
bitcoin-rpc library: Library to communicate with the Satoshi Bitcoin daemon
bitcoin-script library: Compilation, manipulation and decompilation of Bitcoin scripts
bitcoin-tx library: Utility functions for manipulating bitcoin transactions
bitcoin-types library: Provides consistent low-level types used commonly among Bitcoin implementations
bittorrent library: Bittorrent protocol implementation.
BufferedSocket library: A socker wrapper that makes the IO of sockets much cleaner
bustle programs: Draw sequence diagrams of D-Bus traffic
c10k library: C10k server library using prefork
call-haskell-from-anything library and program: Call Haskell functions from other languages via serialization and dynamic libraries
cci library and programs: Bindings for the CCI networking library
ccnx library: A Haskell implementation of the CCNx network protocol.
cgi library: A library for writing CGI programs
check-email library: Confirm whether an email is valid and probably existant.
clarifai library: API Client for the Clarifai API.
cloudfront-signer library: CloudFront URL signer
colchis library: Rudimentary JSON-RPC 2.0 client over raw TCP.
Combinatorrent program: A concurrent bittorrent client
commsec-keyexchange library: Key agreement for commsec.
compact-socket library: Socket functions for compact normal form.
concurrent-dns-cache library and program: Concurrent DNS cache
conduit-connection library: Conduit source and sink for Network.Connection.
conduit-network-stream library: A base layer for network protocols using Conduits
conjure library and program: A BitTorrent client
connection library: Simple and easy network connections API
connection-pool library: Connection pool built on top of resource-pool and streaming-commons.
consul-haskell library: A consul client for Haskell
courier library and programs: A message-passing library for simplifying network applications
cr program: Code review tool
curl library: Haskell binding to libcurl
curl-aeson library: Communicate with HTTP service using JSON
curlhs library: bindings to libcurl, the multiprotocol file transfer library
d-bus library and programs: Permissively licensed D-Bus client library
daemons library and programs: Daemons in Haskell made fun and easy
danibot library and program: Basic Slack bot framework.
datadog library: Datadog client for Haskell. Currently only StatsD supported, other support forthcoming.
DBus library: D-Bus bindings
dbus library: A client library for the D-Bus IPC system.
dbus-client library: Monadic and object-oriented interfaces to DBus
dbus-core library: Low-level D-Bus protocol implementation
dbus-qq library: Quasi-quoter for DBus functions
dbus-th library: TemplateHaskell generator of DBus bindings
dgs library: Haskell front-end for DGS' bot interface
DigitalOcean library: A client library for the DigitalOcean API
direct-fastcgi library: Native implementation of the FastCGI protocol.
direct-http library: Native webserver that acts as a library.
distributed-process-ekg library: Collect node stats for EKG
distributed-process-p2p library and program: Peer-to-peer node discovery for Cloud Haskell
dns library: DNS library in Haskell
dnscache library and program: Caching DNS resolver library and mass DNS resolver utility
dnsrbl library: Asynchronous DNS RBL lookup
dnssd library: DNS service discovery bindings
docker library: Haskell wrapper for Docker Remote API
domain-auth library: Domain authentication library
download library: High-level file download based on URLs
download-curl library: High-level file download based on URLs
dresdner-verkehrsbetriebe library and program: Library and program for querying DVB (Dresdner Verkehrsbetriebe AG)
Dust library: Polymorphic protocol engine
Dust-tools library and programs: Network filtering exploration tools
Dust-tools-pcap programs: Network filtering exploration tools that rely on pcap
eager-sockets library: Socket operations with timeouts
easy-bitcoin library: types and functions for bitcoin applications
ec2-signature library: The Amazon EC2 style signature calculator.
ekg library: Remote monitoring of processes
email library: Sending eMail in Haskell made easy
email-header library: Parsing and rendering of email and MIME headers
engine-io-wai library
engine-io-yesod library
epass library: Baisc, Erlang-like message passing supporting sockets.
EtaMOO program: A new implementation of the LambdaMOO server
etcd library: Client for etcd, a highly-available key value store
Etherbunny library and program: A network analysis toolkit for Haskell
EventSocket library: Interfaces with FreeSwitch Event Socket.
fastcgi library: A Haskell library for writing FastCGI programs
fastirc library: Fast Internet Relay Chat (IRC) library
flowdock-api library and program: API integration with Flowdock.
fluent-logger library: A structured logger for Fluentd (Haskell)
fluent-logger-conduit library: Conduit interface for fluent-logger
freddy library: RabbitMQ Messaging API supporting request-response
free-http library: An HTTP Client based on Free Monads.
ftp-conduit library: FTP client package with conduit interface based off http-conduit
ftphs library and program: FTP Client and Server Library
FTPLine program: A command-line FTP client.
full-sessions library: a monad for protocol-typed network programming
funbot program: IRC bot for fun, learning, creativity and collaboration.
funbot-client library: Report events to FunBot over a JSON/HTTP API.
funbot-ext-events library: Interact with FunBot's external events.
funbot-git-hook program: Git hook which sends events to FunBot.
futun program: Simple IP-over-UDP tunnel using TUNTAP
generic-server library: Simple generic TCP/IP server
GeoIp library: Pure bindings for the MaxMind IP database.
ginsu program: Ginsu Gale Client
github library: Access to the GitHub API, v3.
github-utils library: Useful functions that use the GitHub API
gitit library and programs: Wiki using happstack, git or darcs, and pandoc.
gitter library: Gitter.im API client
glue library and program: Make better services.
glue-common library: Make better services and clients.
glue-core library: Make better services and clients.
glue-ekg library: Make better services and clients.
glue-example program: Make better services and clients.
gnss-converters library and programs: GNSS Converters.
gnutls library: Bindings for GNU libgnutls
gogol library: Comprehensive Google Services SDK.
gogol-adexchange-buyer library: Google Ad Exchange Buyer SDK.
gogol-adexchange-seller library: Google Ad Exchange Seller SDK.
gogol-admin-datatransfer library: Google Admin Data Transfer SDK.
gogol-admin-directory library: Google Admin Directory SDK.
gogol-admin-emailmigration library: Google Email Migration API v2 SDK.
gogol-admin-reports library: Google Admin Reports SDK.
gogol-adsense library: Google AdSense Management SDK.
gogol-adsense-host library: Google AdSense Host SDK.
gogol-affiliates library: Google Affiliate Network SDK.
gogol-analytics library: Google Analytics SDK.
gogol-android-enterprise library: Google Play EMM SDK.
gogol-android-publisher library: Google Play Developer SDK.
gogol-appengine library: Google App Engine Admin SDK.
gogol-apps-activity library: Google Apps Activity SDK.
gogol-apps-calendar library: Google Calendar SDK.
gogol-apps-licensing library: Google Enterprise License Manager SDK.
gogol-apps-reseller library: Google Enterprise Apps Reseller SDK.
gogol-apps-tasks library: Google Tasks SDK.
gogol-appstate library: Google App State SDK.
gogol-autoscaler library: Google Compute Engine Autoscaler SDK.
gogol-bigquery library: Google BigQuery SDK.
gogol-billing library: Google Cloud Billing SDK.
gogol-blogger library: Google Blogger SDK.
gogol-books library: Google Books SDK.
gogol-civicinfo library: Google Civic Information SDK.
gogol-classroom library: Google Classroom SDK.
gogol-cloudtrace library: Google Cloud Trace SDK.
gogol-compute library: Google Compute Engine SDK.
gogol-container library: Google Container Engine SDK.
gogol-core library: Core data types and functionality for Gogol libraries.
gogol-customsearch library: Google CustomSearch SDK.
gogol-dataflow library: Google Dataflow SDK.
gogol-datastore library: Google Cloud Datastore SDK.
gogol-debugger library: Google Cloud Debugger SDK.
gogol-deploymentmanager library: Google Cloud Deployment Manager SDK.
gogol-dfareporting library: Google DCM/DFA Reporting And Trafficking SDK.
gogol-discovery library: Google APIs Discovery Service SDK.
gogol-dns library: Google Cloud DNS SDK.
gogol-doubleclick-bids library: Google DoubleClick Bid Manager SDK.
gogol-doubleclick-search library: Google DoubleClick Search SDK.
gogol-drive library: Google Drive SDK.
gogol-fitness library: Google Fitness SDK.
gogol-fonts library: Google Fonts Developer SDK.
gogol-freebasesearch library: Google Freebase Search SDK.
gogol-fusiontables library: Google Fusion Tables SDK.
gogol-games library: Google Play Game Services SDK.
gogol-games-configuration library: Google Play Game Services Publishing SDK.
gogol-games-management library: Google Play Game Services Management SDK.
gogol-genomics library: Google Genomics SDK.
gogol-gmail library: Google Gmail SDK.
gogol-groups-migration library: Google Groups Migration SDK.
gogol-groups-settings library: Google Groups Settings SDK.
gogol-identity-toolkit library: Google Identity Toolkit SDK.
gogol-latencytest library: Google Cloud Network Performance Monitoring SDK.
gogol-logging library: Google Cloud Logging SDK.
gogol-maps-coordinate library: Google Maps Coordinate SDK.
gogol-maps-engine library: Google Maps Engine SDK.
gogol-mirror library: Google Mirror SDK.
gogol-monitoring library: Google Cloud Monitoring SDK.
gogol-oauth2 library: Google OAuth2 SDK.
gogol-pagespeed library: Google PageSpeed Insights SDK.
gogol-partners library: Google Partners SDK.
gogol-play-moviespartner library: Google Play Movies Partner SDK.
gogol-plus library: Google + SDK.
gogol-plus-domains library: Google + Domains SDK.
gogol-prediction library: Google Prediction SDK.
gogol-proximitybeacon library: Google Proximity Beacon SDK.
gogol-pubsub library: Google Cloud Pub/Sub SDK.
gogol-qpxexpress library: Google QPX Express SDK.
gogol-replicapool library: Google Compute Engine Instance Group Manager SDK.
gogol-replicapool-updater library: Google Compute Engine Instance Group Updater SDK.
gogol-resourcemanager library: Google Cloud Resource Manager SDK.
gogol-resourceviews library: Google Compute Engine Instance Groups SDK.
gogol-shopping-content library: Google Content API for Shopping SDK.
gogol-siteverification library: Google Site Verification SDK.
gogol-spectrum library: Google Spectrum Database SDK.
gogol-sqladmin library: Google Cloud SQL Administration SDK.
gogol-storage library: Google Cloud Storage JSON SDK.
gogol-storage-transfer library: Google Storage Transfer SDK.
gogol-tagmanager library: Google Tag Manager SDK.
gogol-taskqueue library: Google TaskQueue SDK.
gogol-translate library: Google Translate SDK.
gogol-urlshortener library: Google URL Shortener SDK.
gogol-useraccounts library: Google Cloud User Accounts SDK.
gogol-webmaster-tools library: Google Webmaster Tools SDK.
gogol-youtube library: Google YouTube Data SDK.
gogol-youtube-analytics library: Google YouTube Analytics SDK.
gogol-youtube-reporting library: Google YouTube Reporting SDK.
GoogleDirections library: Haskell Interface to Google Directions API
gopherbot program: Spidering robot to download files from Gopherspace
GrowlNotify library and program: Notification utility for Growl.
gsasl library: Bindings for GNU libgsasl
gtkrsync programs: Gnome rsync progress display
Hach library and programs: Simple chat
HackMail library and program: A Procmail Replacement as Haskell EDSL
hailgun library: Mailgun REST api interface for Haskell.
hailgun-send program: A program to send emails throught the Mailgun api.
handa-gdata library and program: Library and command-line utility for accessing Google services and APIs.
handwriting library and program: API Client for the handwriting.io API.
hascat program: Hascat Web Server
hascat-lib library: Hascat Package
hascat-setup library and program: Hascat Installation helper
hascat-system library: Hascat System Package
haskakafka library: Kafka bindings for Haskell
haskbot-core library: Easily-extensible chatbot for Slack messaging service
haskell-aliyun library: haskell client of aliyun service.
haskell-ftp library and program: A Haskell ftp server with configurable backend.
haskell-modbus library: A cereal-based parser for the Modbus protocol
haskell-openflow library: OpenFlow protocol in Haskell
haskell-tor library and program: A Haskell Tor Node
haskell-xmpp library and program: Haskell XMPP (eXtensible Message Passing Protocol, a.k.a. Jabber) library
HaskellNet library: Client support for POP3, SMTP, and IMAP
HaskellNet-SSL library: Helpers to connect to SSL/TLS mail servers with HaskellNet
HaskellTorrent program: A concurrent bittorrent client
haskheap library: Haskell bindings to refheap.
haskoin library: Implementation of the Bitcoin protocol.
haskoin-core library: Implementation of the core Bitcoin protocol features.
haskoin-crypto library: Implementation of Bitcoin cryptographic primitives.
haskoin-node library: Implementation of a Bitoin node.
haskoin-protocol library: Implementation of the Bitcoin network protocol messages
haskoin-script library: Implementation of Bitcoin script parsing and evaluation
haskoin-util library: Utility functions for the Network.Haskoin project
haskoin-wallet library and program: Implementation of a Bitcoin SPV Wallet with BIP32 and multisig support.
haxl-facebook library: An example Haxl data source for accessing the Facebook Graph API
haxr library: XML-RPC client and server library.
hbeanstalk library: Client for the beanstalkd workqueue service.
hcoap library and programs: CoAP implementation for Haskell.
helics library and program: New Relic® agent SDK wrapper for Haskell.
helics-wai library and program: New Relic® agent SDK wrapper for wai.
helix library: Web development micro framework for haskell with typesafe URLs
hellage programs: Distributed hackage mirror
hellnet library and programs: Simple, distributed, anonymous data sharing network.
henet library: Bindings and high level interface for to ENet v1.3.9
Hermes library: Message-based middleware layer
heyefi program: A server for Eye-Fi SD cards.
HGamer3D-Enet-Binding library: Enet Binding for HGamer3D
hgearman library: A Gearman client for Haskell.
hGelf library: Haskell GELF library
hgithub library and program: Haskell bindings to the GitHub API
hgopher library: Gopher server
hichi programs: haskell robot for IChat protocol
hinquire library: Generate armet style query strings.
hircules program: IRC client
hMollom library: Library to interact with the @Mollom anti-spam service
HNM library and program: Happy Network Manager
hoauth library: A Haskell implementation of OAuth 1.0a protocol.
hoauth2 library and programs: Haskell OAuth2 authentication client
hog program: Simple IRC logger bot.
Holumbus-Distribution library and programs: intra- and inter-program communication
HostAndPort library: Parser for host and port pairs like localhost:22
hostname library: A very simple package providing a cross-platform means of determining the hostname
hostname-validate library: Validate hostnames e.g. localhost or foo.co.uk.
hosts-server program: An dns server which is extremely easy to config.
hpodder program: Podcast Aggregator (downloader)
hs-json-rpc library: JSON-RPC client library
hs-twitterarchiver program: Commandline Twitter feed archiver
hS3 library and program: Interface to Amazon's Simple Storage Service (S3)
hscd library and program: Command line client and library for SoundCloud.com
hsdns library: Asynchronous DNS Resolver
hsdns-cache library: Caching asynchronous DNS resolver.
hserv program: Simple http server in haskell.
hsgnutls library: Library wrapping the GnuTLS API.
hsgnutls-yj library: Library wrapping the GnuTLS API.
hSimpleDB library: Interface to Amazon's SimpleDB service.
hsini library: Package for user configuration files (INI)
hsmtpclient library: Simple SMTP Client
hsns program: a miniature network sniffer
hsnsq library: Haskell NSQ client.
hsp-cgi library: Facilitates running Haskell Server Pages web pages as CGI programs.
hspr-sh library: Session handler for HSP
hspread library: A client library for the spread toolkit
hstorchat library and program: Distributed instant messaging over Tor
hszephyr library: Simple libzephyr bindings
HTTP library: A library for client-side HTTP
http-attoparsec library: Attoparsec parsers for http-types.
http-client library: An HTTP client engine, intended as a base layer for more user-friendly packages.
http-client-auth library: HTTP authorization (both basic and digest) done right
http-client-conduit library: Frontend support for using http-client with conduit (deprecated)
http-client-multipart library: Generate multipart uploads for http-client. (deprecated)
http-client-openssl library: http-client backend using the OpenSSL library.
http-client-request-modifiers library: Convenient monadic HTTP request modifiers
http-client-session library: A simple abstraction over the "http-client" connection manager
http-client-tls library: http-client backend using the connection package and tls library
http-date library: HTTP Date parser/formatter
http-dispatch library: High level HTTP client for Haskell
http-kit library: A low-level HTTP library
http-listen library: Listen to HTTP requests and handle them in arbitrary ways.
http-monad library and program: Monad abstraction for HTTP allowing lazy transfer and non-I/O simulation
http-querystring library: The HTTP query builder.
http-server library: A library for writing Haskell web servers.
http-shed library and program: A simple websever with an interact style API
HTTP-Simple library: DEPRECATED Enable simple wrappers to Network.HTTP
http-types library: Generic HTTP types for Haskell (for both client and server code).
http-wget library: ...
http2 library and programs: HTTP/2.0 library including frames and HPACK
httpd-shed library and program: A simple web-server with an interact style API
hulk library and programs: IRC server written in Haskell.
hums program: Haskell UPnP Media Server
hwall-auth-iitk program: Initial version of firewall Authentication for IITK network.
HXMPP library and program: A (prototyped) easy to use XMPP library
hxmppc program: Haskell XMPP (Jabber Client) Command Line Interface (CLI)
hyena library: Simple web application server
iap-verifier library: A simple wrapper of In-App-Purchase receipt validate APIs.
ib-api library and program: An API for the Interactive Brokers Trading Workstation written in pure Haskell
idna2008 library: Converts Unicode hostnames into ASCII
ihttp library and program: Incremental HTTP iteratee
imagepaste program: Command-line image paste utility
imap library: An efficient IMAP client library, with SSL and streaming
imapget program: Downloads email from imap SSL servers.
io-streams library: Simple, composable, and easy-to-use stream I/O
ip-quoter library: Quasiquoter for IP addresses
ip6addr program: Commandline tool to generate IPv6 address text representations
iproute library: IP Routing Table
IPv6Addr library: Library to deal with IPv6 address text representations.
Irc library: DSL for IRC bots
irc library: A small library for parsing IRC messages.
irc-bytestring library: serialization and parsing of IRC messages
irc-client library: An IRC client library.
irc-conduit library: Streaming IRC message library using conduits.
irc-core library and program: An IRC client library and text client
irc-ctcp library: A CTCP encoding and decoding library for IRC clients.
irc-dcc library: A DCC message parsing and helper library for IRC clients
irc-fun-bot library: Library for writing fun IRC bots.
irc-fun-client library: Another library for writing IRC clients.
irc-fun-color library: Add color and style decorations to IRC messages.
irc-fun-messages library: Types and functions for working with the IRC protocol.
irc-fun-types library: Common types for IRC related packages
ircbot library: A library for writing irc bots
iron-mq library: Iron.IO message queueing client library
ismtp library: Advanced ESMTP library
iterio-server library: Library for building servers with IterIO
iyql program: CLI (command line interface) to YQL
jmacro-rpc library: JSON-RPC clients and servers using JMacro, ...
jmacro-rpc-happstack library: Happstack backend for jmacro-rpc
jmacro-rpc-snap library: Snap backend for jmacro-rpc
jobqueue library: A job queue library
json-rpc library: Fully-featured JSON-RPC 2.0 library
json-rpc-client library and programs: JSON-RPC 2.0 on the client side.
json-rpc-server library and program: JSON-RPC 2.0 on the server side.
kademlia library: An implementation of the Kademlia DHT Protocol
kafka-client library: Low-level Haskell client library for Apache Kafka 0.7.
koofr-client library: Client to Koofr API
kraken library: Kraken.io API client
krpc library: KRPC protocol implementation
lambda-bridge library and program: A bridge from Haskell (on a CPU) to VHDL on a FPGA.
latest-npm-version library and program: Find the latest version of a package on npm
LDAP library and program: Haskell binding for C LDAP API
ldap-client library: Pure Haskell LDAP Client Library
libjenkins library: Jenkins API interface
libmpd library: An MPD client library.
librato library: Bindings to the Librato API
libravatar library: Use Libravatar, the decentralized avatar delivery service
libssh2 library and program: FFI bindings to libssh2 SSH2 client library (http://libssh2.org/)
libssh2-conduit library: Conduit wrappers for libssh2 FFI bindings (see libssh2 package).
linklater library: The fast and fun way to write Slack.com bots
linode library: Bindings to the Linode API
linx-gateway library and program: Implementation of the Enea LINX gateway protocol.
local-address library: Functions to get local interface address
loshadka program: Minecraft 1.7 server proxy that answers to queries when the server is offline
Lucu library and program: HTTP Daemonic Library
majordomo library and programs: Majordomo protocol for ZeroMQ
manatee-browser library and program: Browser extension for Manatee.
manatee-curl library and program: Download Manager extension for Manatee.
manatee-terminal library and program: Terminal Emulator extension for Manatee.
mandrill library: Library for interfacing with the Mandrill JSON API
matsuri program: ncurses XMPP client
mcpi library and programs: Connect to MineCraft running on a Raspberry PI.
memcache-conduit library and programs: Conduit library for memcache procotol
memcache-haskell library and programs: Memcache procotol library
memcached library: haskell bindings for memcached
messagepack-rpc library: Message Pack RPC over TCP
metricsd-client library: Client for the metrics aggregator Metricsd
Mhailist programs: Haskell mailing list manager
mighttpd programs: Simple Web Server in Haskell
mighttpd2 library and programs: High performance web server on WAI/warp
milena library: A Kafka client for Haskell.
minions program: A fast parallel ssh tool
moesocks program: A functional firewall killer
monad-connect library: Transformer for TCP connection with TLS and SOCKS support
montage library: Riak Resolution Proxy
montage-client library: Riak Resolution Proxy Client
mqtt-hs library: A MQTT client library.
msgpack-rpc library: A MessagePack-RPC Implementation
mtgoxapi library: Library to communicate with Mt.Gox
multiaddr library: A network address format
multipart library: HTTP multipart split out of the cgi package
MusicBrainz library: interface to MusicBrainz XML2 web service
mvclient library: Client library for metaverse systems like Second Life
mybitcoin-sci library: Binding to mybitcoin.com's Shopping Cart Interface.
n-m library and program: Utility to call iwconfig.
nanomsg-haskell library: Bindings to the nanomsg library
nationstates library: NationStates API client
nats-queue library: Haskell API for NATS messaging system
net-concurrent library: Concurrent over the network execution library
netclock library: Netclock protocol
netcore library: The NetCore compiler and runtime system for OpenFlow networks.
netlines library and program: Enumerator tools for text-based network protocols
netrc library: Parser for .netrc files
NetSNMP library: Bindings for net-snmp's C API for clients
netspec library: Simplify static Networking tasks
netstring-enumerator library: Enumerator-based netstring parsing
nettle-frp library: FRP for controlling networks of OpenFlow switches.
nettle-netkit library: DSL for describing OpenFlow networks, and a compiler generating NetKit labs.
nettle-openflow library: OpenFlow protocol messages, binary formats, and servers.
network library: Low-level networking interface
network-address library and program: IP data structures and textual representation
network-anonymous-i2p library: Haskell API for I2P anonymous networking
network-anonymous-tor library and program: Haskell API for Tor anonymous networking
network-attoparsec library: Utility functions for running a parser against a socket
network-bitcoin library and program: An interface to bitcoind.
network-builder library and program: Linux NetworkNameSpace Builder
network-bytestring library: Fast, memory-efficient, low-level networking
network-conduit library: Stream socket data using conduits. (deprecated)
network-conduit-tls library: Create TLS-aware network code with conduits
network-connection library: A wrapper around a generic stream-like connection
network-data library: Library for network data structures and their serialization.
network-dbus library: D-Bus
network-dns library: Domain Name System data structures
network-fancy library: Networking support with a cleaner API
network-house library: data and parsers for Ethernet, TCP, UDP, IPv4, IPv6, ICMP, DHCP, TFTP
network-info library: Access the local computer's basic network configuration
network-interfacerequest library: Haskell bindings for the ifreq structure
network-ip library: Internet Protocol data structures
network-minihttp library: A ByteString based library for writing HTTP(S) servers and clients.
network-msg library: Recvmsg and sendmsg bindings.
network-multicast library: Simple multicast library
network-netpacket library: Haskell bindings for low-level packet sockets (AF_PACKET)
Network-NineP library and program: High-level abstraction over 9P protocol
network-protocol-xmpp library: Client library for the XMPP protocol.
network-server library and program: A light abstraction over sockets & co. for servers
network-service library and program: Provide a service at the data type level.
network-simple library: Simple network sockets usage patterns.
network-simple-sockaddr library: network-simple for resolved addresses
network-simple-tls library: Simple interface to TLS secured network sockets.
network-socket-options library: Type-safe, portable alternative to getSocketOption/setSocketOption
network-transport library: Network abstraction layer
network-transport-amqp library: AMQP-based transport layer for distributed-process (aka Cloud Haskell)
network-transport-composed library: Compose network transports
network-transport-inmemory library: In-memory instantiation of Network.Transport
network-transport-tcp library: TCP instantiation of Network.Transport
network-transport-tests library: Unit tests for Network.Transport implementations
network-transport-zeromq library and programs: ZeroMQ backend for network-transport
network-uri library: URI manipulation
network-uri-static library: A small utility to declare type-safe static URIs
network-websocket library and program: WebSocket library
networked-game library: Networked-game support library
nist-beacon library: Haskell interface to the nist random beacon.
nntp library: Library to connect to an NNTP Server
ntp-control library: Client library for NTP control messaging
nylas library: Client for the Nylas API
oauthenticated library: Simple OAuth for http-client
octohat library and program: A tested, minimal wrapper around GitHub's API.
on-demand-ssh-tunnel library and program: Program that sends traffic through SSH tunnels on-demand
openflow library: OpenFlow
openid library and program: An implementation of the OpenID-2.0 spec.
opensource library: Haskell API Wrapper for the Open Source License API
openssl-streams library: OpenSSL network support for io-streams.
orchid library: Haskell Wiki Library
orchid-demo program: Haskell Wiki Demo
osm-download library: Download Open Street Map tiles
pagerduty library: Client library for PagerDuty Integration and REST APIs.
patterns library: Common patterns in message-oriented applications
paypal-api library: PayPal API, currently supporting "ButtonManager"
pb program: pastebin command line application
pcap library: A system-independent interface for user-level packet capture
pcap-conduit library: Conduit <-> libpcap
pcap-enumerator library: Convert a pcap into an enumerator.
peyotls library: Pretty Easy YOshikuni-made TLS library
peyotls-codec library: Codec parts of Pretty Easy YOshikuni-made TLS library
pgdl program: browse directory listing webpages and download files from them.
pia-forward program: Set up port forwarding with the Private Internet Access VPN service.
pipes-network library: Use network sockets together with the pipes library.
pipes-network-tls library: TLS-secured network connections support for pipes.
pipes-p2p library: P2P network nodes with pipes
pipes-p2p-examples program: Examples using pipes-p2p
pipes-zeromq4 library and programs: Pipes integration for ZeroMQ messaging
pocket-dns library and program: Multi-backend (zookeeper and sqlite) DNS Server using persistent-library
pontarius-xmpp library: An XMPP client library
pop3-client library: POP3 Client Library
PortFusion program: high-performance distributed reverse / forward proxy & tunneling for TCP
postie library and programs: SMTP server library to receive emails from within Haskell programs.
postmaster program: Postmaster ESMTP Server
prometheus-client library: Haskell client library for http://prometheus.io.
prometheus-metrics-ghc library: Metrics exposing GHC runtime information for use with prometheus-client.
publicsuffixlist library: Is a given string a domain suffix?
publicsuffixlistcreate library: Create the publicsuffixlist package
push-notify library: A server-side library for sending push notifications.
push-notify-ccs library: ...
push-notify-general library: A general library for sending/receiving push notif. through dif. services.
pusher-http-haskell library and programs: Haskell client library for the Pusher HTTP API
querystring-pickle library: Picklers for de/serialising Generic data types to and from query strings
Ranka program: HTTP to XMPP omegle chats gate.
rclient library: Haskell client for Rserve
rdioh library and programs: A Haskell wrapper for Rdio's API.
recaptcha library: Functions for using the reCAPTCHA service in web applications.
reddit library: Library for interfacing with Reddit's API
Redmine library: Library to access Redmine's REST services
remote-json library: Remote Monad implementation of the JSON RPC protocol
remote-json-client library: Web client wrapper for remote-json
remote-json-server library: Web server wrapper for remote-json
remotion library: A library for client-server applications based on custom protocols
resource-pool library: A high-performance striped resource pooling implementation
resource-pool-catchio library: Fork of resource-pool, with a MonadCatchIO constraint
riak library: A Haskell client for the Riak decentralized data store
riak-protobuf library: Haskell types for the Riak protocol buffer API
riemann library and program: A Riemann client for Haskell
rncryptor library and programs: Haskell implementation of the RNCryptor file format
rpc library: type safe rpcs provided as basic IO actions
rpc-framework library and program: a remote procedure call framework
rpf program: Receiver Policy Framework
rtcm library: RTCM Library.
rtorrent-rpc library: A library for communicating with RTorrent over its XML-RPC interface.
rws program: Packet Generation
s3-signer library: Pre-signed Amazon S3 URLs
salvia library: Modular web application framework.
salvia-demo library and programs: Demo Salvia servers.
salvia-extras library: Collection of non-fundamental handlers for the Salvia web server.
salvia-protocol library: Salvia webserver protocol suite supporting URI, HTTP, Cookie and MIME.
salvia-sessions library: Session support for the Salvia webserver.
salvia-websocket library: Websocket implementation for the Salvia Webserver.
sasl library: SASL implementation using simple-pipe
sbp library and programs: SwiftNav's SBP Library
scalable-server library: Library for writing fast/scalable TCP-based services
scgi library: A Haskell library for writing SCGI programs.
scrape-changes library: Scrape websites for changes
scrobble library and program: Scrobbling server.
Scurry program: A cross platform P2P VPN application built using Haskell.
second-transfer library: Second Transfer HTTP/2 web server
secure-sockets library: Secure point-to-point connectivity library
sendfile library: A portable sendfile library
sentry library and programs: Process monitoring tool written and configured in Haskell
ses-html library: Send HTML formatted emails using Amazon's SES REST API with blaze
ses-html-snaplet library: Snaplet for the ses-html package
shoap library: A very basic SOAP package
simple-bluetooth library: Simple Bluetooth API for Windows and Linux (bluez)
simple-sendfile library: Cross platform library for the sendfile system call
simple-server library: Simple Server interface
simpleirc library: Simple IRC Library
simpleirc-lens library: Lenses for simpleirc types
simplesmtpclient library: Very simple SMTP Client
simplessh library: Simple wrapper around libssh2
skype4hs library: Skype Desktop API binding for Haskell
slack library: Haskell API for interacting with Slack
smtp-mail library: Simple email sending via SMTP
smtp-mail-ng library: An SMTP client EDSL
smtp2mta program: Listen for SMTP traffic and send it to an MTA script
SMTPClient library: A simple SMTP client library
smtps-gmail library: Gmail SMTP Client
snap-blaze library: blaze-html integration for Snap
snap-blaze-clay library: blaze-html-clay integration for Snap
snaplet-ses-html library: Snaplet for the ses-html package
snmp library: API for write snmp client.
sock2stream program: Tunnel a socket over a single datastream (stdin/stdout)
sockaddr library: Printing SockAddr
socket library: An extensible socket library.
socket-activation library: systemd socket activation library
socket-sctp library: STCP socket extensions library.
socketson library and programs: A small websocket backend provider.
socks library: Socks proxy (version 5) implementation.
sphero library: Orbotix Sphero client library
splice library: Cross-platform Socket to Socket Data Splicing
sscgi library: Simple SCGI Library
ssh library: A pure-Haskell SSH server library.
sshtun program: Wrapper daemon to manage an ssh tunnel
starling library: A memcached client
statsd library: StatsD API.
statsd-client library: Statsd UDP client
statsd-datadog library: DataDog-flavored StatsD client.
stm-firehose library: Conduits and STM operations for fire hoses.
Stomp library: Client library for Stomp brokers.
stomp-conduit library: Stompl Conduit Client
stomp-patterns library: Stompl MOM Stomp Patterns
stomp-queue library: Stompl Client Library
stompl library: Stomp Parser and Utilities
stunclient library: RFC 5389: Session Traversal Utilities for NAT (STUN) client
subnet library: subnetting calculator
syncthing-hs library: Haskell bindings for the Syncthing REST API
task program: A command line tool for keeping track of tasks you worked on
tcp library: A purely functional TCP implementation
telegram library: Telegram API client
tellbot program: IRC tellbot
textocat-api library: Unofficial Haskell SDK for Textocat API -- http://textocat.com
tftp library and program: A library for building tftp servers
themoviedb library and program: Haskell API bindings for http://themoviedb.org
tighttp library: Tiny and Incrementally-Growing HTTP library
time-out library: Execute a computation with a timeout
tinyMesh library: TinyMesh - communicating with auto-meshing sensor network
tld library: This project separates subdomains, domains, and top-level-domains from URLs.
tls library: TLS/SSL protocol native implementation (Server and Client)
tls-debug programs: Set of programs for TLS testing and debugging
tls-extra library and program: TLS extra default values and helpers
torrent library: BitTorrent file parser and generater
tremulous-query library: Library for polling Tremulous servers
tuntap library: Interface to TUN/TAP drivers.
twentefp-websockets library: ...
twidge program: Unix Command-Line Twitter and Identica Client
twitter program: A Haskell-based CLI Twitter client
uber library: Uber client for Haskell
udbus library and programs: Small DBus implementation
udbus-model library and program: Model API for udbus introspection and definitions
uhttpc library and program: Minimal HTTP client library optimized for benchmarking
unbreak library and program: Secure and resilient remote file storage utility
uri-encode library and programs: Unicode aware uri-encoding.
uri-templater library: Parsing & Quasiquoting for RFC 6570 URI Templates
urlcheck program: Parallel link checker
UrlDisp library: Url dispatcher. Helps to retain friendly URLs in web applications.
vrpn library and program: Bindings to VRPN.
wai-cors library: CORS for WAI
wai-graceful library: Graceful shutdown for WAI applications.
wai-lens library: Lenses for WAI
wai-middleware-consul library and program: Wai Middleware for Consul
wai-middleware-prometheus library: WAI middlware for exposing http://prometheus.io metrics.
wai-request-spec library: Declarative request parsing
wai-responsible library: Response interface for WAI.
wai-routes library: Typesafe URLs for Wai applications.
warp-dynamic library and program: Dynamic configurable warp HTTP server
webfinger-client library: WebFinger client library
webserver library: HTTP server library
websockets library and program: A sensible and clean way to write WebSocket-capable servers in Haskell.
websockets-snap library: Snap integration for the websockets library
whois library: WHOIS client library.
winio library: I/O library for Windows
witty program: A network server to show bottlenecks of GHC
WL500gPControl programs: A simple command line tools to control the Asus WL500gP router
WL500gPLib library and program: A simple library to access to the WL 500gP router from the Haskell code
wobsurv library and program: A simple and highly performant HTTP file server
wol library and program: Send a Wake on LAN Magic Packet
wolf library and programs: Amazon Simple Workflow Service Wrapper.
wp-archivebot program: Subscribe to a wiki's RSS feed and archive external links
wsedit program: A small tool to list, add and remove webseeds from a torrent file
wuss library: Secure WebSocket (WSS) clients
xcp library: Partial implementation of the XCP protocol with ethernet as transport layer.
xdcc program: A wget-like utility for retrieving files from XDCC bots on IRC
xml-push library: Push XML from/to client to/from server over XMPP or HTTP
XMMS library: XMMS2 client library.
xmpipe library: XMPP implementation using simple-PIPE
XMPP library: XMPP library
yaml-rpc library: Simple library for network (HTTP REST-like) YAML RPC
yaml-rpc-scotty library: Scotty server backend for yaml-rpc
yaml-rpc-snap library: Snap server backend for yaml-rpc
yeller library: A Yeller Client For Haskell
yjftp library and program: CUI FTP client like 'ftp', 'ncftp'
yjftp-libs library and program: CUI FTP client like 'ftp', 'ncftp'
Yogurt library: A MUD client library
Yogurt-Standalone program: A functional MUD client
zeromq3-conduit library: Conduit bindings for zeromq3-haskell
zigbee-znet25 library: XBee ZNet 2.5 (ZigBee) wireless modem communications
zipkin library: Zipkin-style request tracing monad
zmcat library and program: Command-line tool for ZeroMQ.
zmqat program: A socat-like tool for zeromq library

Network APIs

antigate library: Interface for antigate.com captcha recognition API
dropbox-sdk library: A library to access the Dropbox HTTP API.
hsreadability library: Access to the Readability API.
liblastfm library: Lastfm API interface
librandomorg library: Wrapper to Random.org API
network-api-support library: Toolkit for building http client libraries over Network.Http.Conduit
phone-push library: Push notifications for Android and iOS
pinboard library: Access to the Pinboard API
postcodes library: A library that gets postcode information from the uk-postcodes.com
postmark library and program: Library for postmarkapp.com HTTP Api
simplenote library: Haskell interface for the simplenote API.
trajectory library and programs: Tools and a library for working with Trajectory.
twilio library: Twilio REST API library for Haskell

NetworkAPI

arxiv library: A client for the Arxiv API

NetworkAPIs

libstackexchange library: StackExchange API interface

Networking

hans library and programs: IPv4 Network Stack
hans-pcap library: Driver for real ethernet devices for HaNS
hans-pfq library: Driver for real ethernet devices for HaNS
llsd library and programs: An implementation of the LLSD data system
network-rpca library: A cross-platform RPC library
Pup-Events library and program: A networked event handling framework for hooking into other programs.
Pup-Events-Client library: A networked event handling framework for hooking into other programs.
Pup-Events-Demo programs: A networked event handling framework for hooking into other programs.
Pup-Events-PQueue library: A networked event handling framework for hooking into other programs.
Pup-Events-Server library: A networked event handling framework for hooking into other programs.
wobsurv library and program: A simple and highly performant HTTP file server

Nix

hnix library and program: Haskell implementation of the Nix language
simple-nix library: Simple parsing/pretty printing for Nix expressions

NLP

arpa library and program: Library for reading ARPA n-gram models
glider-nlp library: Natural Language Processing library
rake library: Rapid Automatic Keyword Extraction (RAKE)

Noise

hsnoise library: A coherent 3d noise library.
Noise library: A Haskell coherent noise generator based on libnoise

None

diff-gestalt library: A diff algorithm based on recursive longest common substrings

Ntrol

acme-comonad library: A more efficient dualization

Number Theory

arithmetic library and program: Natural number arithmetic
arithmoi library: Efficient basic number-theoretic functions. Primes, powers, integer logarithms.
factory library and program: Rational arithmetic in an irrational world.
nth-prime program: Computing the nth prime
Numbers library: An assortment of number theoretic functions
opentheory-divides library: The divides relation on natural numbers
opentheory-fibonacci library: Fibonacci numbers
opentheory-prime library: Prime natural numbers
pell library: Package to solve the Generalized Pell Equation.

Numeric

approximate library: Approximate discrete values and numbers
bed-and-breakfast library: Efficient Matrix operations in 100% Haskell.
compensated library: Compensated floating-point arithmetic
decimal-arithmetic library: An implementation of Mike Cowlishaw's General Decimal Arithmetic Specification
eigen library: Eigen C++ library (linear algebra: matrices, sparse matrices, vectors, ...
exp-extended library: floating point with extended exponent range
fast-math library: Non IEEE-754 compliant compile-time floating-point optimisations
fixed library: Signed 15.16 precision fixed point arithmetic
gutenberg-fibonaccis library: The first 1001 Fibonacci numbers, retrieved from the Gutenberg Project.
half library: Half-precision floating-point
haskell-mpfr library: Correctly-rounded arbitrary-precision floating-point arithmetic
hasty-hamiltonian library: Speedy traversal through parameter space.
hyperloglog library: An approximate streaming (constant space) unique object counter
inf-interval library: Non-contiguous interval data types with potentially infinite ranges.
integer-gmp library: Integer library based on GMP
integer-pure library: A pure-Haskell implementation of arbitrary-precision Integers.
ipopt-hs library and program: haskell binding to ipopt and nlopt including automatic differentiation
LATS library: Linear Algebra on Typed Spaces
lbfgs library: L-BFGS optimization
lens-aeson library: Law-abiding lenses for aeson
limp library: representation of Integer Linear Programs
limp-cbc library: bindings for integer linear programming solver Coin/CBC
log-domain library: Log-domain arithmetic
math-functions library: Special functions and Chebyshev polynomials
mcmc-samplers library: Combinators for MCMC sampling
mcmc-types library: Common types for sampling.
microlens-aeson library: Law-abiding lenses for Aeson, using microlens.
mighty-metropolis library: The Metropolis algorithm.
nats library: Natural numbers
notzero library: A data type for representing numeric values, except zero.
numeric-qq library: Quasi-quoters for numbers of different bases
numeric-ranges library: A framework for numeric ranges.
repr library: Render overloaded expressions to their textual representation.
rungekutta library: A collection of explicit Runge-Kutta methods of various orders
sdnv library: Self-delimiting numeric values encoding library
th-cas library: Compile-time CAS(Computer Algebra System)

Numerical

AC-Angle library: Angles in degrees and radians.
AC-Colour library: Efficient RGB colour types.
AC-HalfInteger library: Efficient half-integer type.
AC-Terminal library: Trivial wrapper over ansi-terminal.
AC-Vector library: Efficient geometric vectors and transformations.
AC-Vector-Fancy library: Fancy type-system stuff for AC-Vector
affine-invariant-ensemble-mcmc library: General-purpose sampling
altfloat library: Alternative floating point support for GHC.
applicative-numbers library: Applicative-based numeric instances
bindings-eskit library: Bindings to ESKit.
bindings-levmar library: Low level bindings to the C levmar (Levenberg-Marquardt) library
casadi-bindings library: mid-level bindings to CasADi
casadi-bindings-control library: low level bindings to casadi-control
casadi-bindings-core library: autogenerated low level bindings to casadi
casadi-bindings-internal library: low level bindings to CasADi
casadi-bindings-ipopt-interface library: low level bindings to casadi-ipopt_interface
casadi-bindings-snopt-interface library: low level bindings to casadi-snopt_interface
clifford library and program: A Clifford algebra library
cmaes library: CMA-ES wrapper in Haskell
continued-fractions library: Continued fractions.
converge library: Limit operations for converging sequences
DifferentialEvolution library: Global optimization using Differential Evolution
dvda library: Efficient automatic differentiation and code generation
estimator library: State-space estimation algorithms such as Kalman Filters
fibonacci library: Fast computation of Fibonacci numbers.
fixed-point library: Binary fixed-point arithmetic
fixed-point-vector library: Unbox instances for the fixed-point package
fixed-point-vector-space library: vector-space instances for the fixed-point package
float-binstring library: C99 printf "%a" style formatting and parsing
gamma library: Gamma function and related functions.
gutenberg-fibonaccis library: The first 1001 Fibonacci numbers, retrieved from the Gutenberg Project.
hfoil library and program: Hess-Smith panel code for inviscid 2-d airfoil analysis
HROOT library: Haskell binding to ROOT RooFit modules
HROOT-core library: Haskell binding to ROOT Core modules
HROOT-graf library: Haskell binding to ROOT Graf modules
HROOT-hist library: Haskell binding to ROOT Hist modules
HROOT-io library: Haskell binding to ROOT IO modules
HROOT-math library: Haskell binding to ROOT Math modules
ieee-utils library: ieee-utils
ieee-utils-tempfix library: ieee-utils
ks-test library: Kolmogorov distribution and Kolmogorov-Smirnov test.
levmar library: An implementation of the Levenberg-Marquardt algorithm
levmar-chart library and program: Plots the results of the Levenberg-Marquardt algorithm in a chart
monoids library: Deprecated: Use 'reducers'
numerals library: Convert numbers to number words
numerals-base library: Convert numbers to number words
numeric-limits library: Various floating point limit related constants.
numeric-tools library: Collection of numerical tools for integration, differentiation etc.
polynomial library: Polynomials
primes library: Efficient, purely functional generation of prime numbers
pure-fft library: Fast Fourier Transform
RANSAC library: The RANSAC algorithm for parameter estimation.
reducers library: Semigroups, specialized containers and a general map/reduce framework
roman-numerals library: Parsing and pretty printing of Roman numerals
roots library: Root-finding algorithms (1-dimensional)
sde-solver library: Distributed SDE solver
simple-vec3 library: Three-dimensional vectors of doubles with basic operations
splines library: B-Splines, other splines, and NURBS.

OAuth

hoauth library: A Haskell implementation of OAuth 1.0a protocol.

OpenLayers

olwrapper library and program: An OpenLayers JavaScript Wrapper and Webframework with snaplet-fay

Operating System

manatee library and program: The Haskell/Gtk+ Integrated Live Environment
manatee-all library and program: Virtual package to install all Manatee packages.
manatee-anything library and program: Multithread interactive input/search framework for Manatee
manatee-core library: The core of Manatee.

Optimisation

circle-packing library: Simple heuristic for packing discs of varying radii in a circle
combinatorial-problems library: ...
GA library: Genetic algorithm library
genprog library: Genetic programming library
ipopt-hs library and program: haskell binding to ipopt and nlopt including automatic differentiation
local-search library: Generalised local search within Haskell, for applications in combinatorial optimisation.
moo library: Genetic algorithm library
nonlinear-optimization-ad library and program: Wrapper of nonlinear-optimization package for using with AD package
OptDir library: The OptDir type for representing optimization directions.
pseudo-boolean library: Reading/Writing OPB/WBO files used in pseudo boolean competition
toysolver library and programs: Assorted decision procedures for SAT, Max-SAT, PB, MIP, etc

Optimization

cmaes library: CMA-ES wrapper in Haskell
DifferentialEvolution library: Global optimization using Differential Evolution
hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel
hermit-syb library: HERMIT plugin for optimizing Scrap-Your-Boilerplate traversals.
moo library: Genetic algorithm library
nonlinear-optimization-ad library and program: Wrapper of nonlinear-optimization package for using with AD package
OptDir library: The OptDir type for representing optimization directions.
pseudo-boolean library: Reading/Writing OPB/WBO files used in pseudo boolean competition
spaceprobe library: Optimization over arbitrary search spaces
spsa library: Simultaneous Perturbation Stochastic Approximation Optimization Algorithm
toysolver library and programs: Assorted decision procedures for SAT, Max-SAT, PB, MIP, etc
typeparams library: ...

Options

hasql-optparse-applicative library: "optparse-applicative" parsers for "hasql"
hasql-postgres-options library: An "optparse-applicative" parser for "hasql-postgres"
optparse-simple library: Simple interface to optparse-applicative
uu-options library: Parse command line options using uu-interleave and uu-parsinglib

Other

chevalier-common library: Query interface for Chevalier
external-sort library: Sort large arrays on your hard drive. Kind of like the unix util sort.
flippers library: Variations on flip for multiple arguments
hsgtd program: Console-based gettings-things-done application
htodo program: A todo application.
locators library: Human exchangable identifiers and locators
lub library: information operators: least upper bound (lub) and greatest lower bound (glb)
marquise library and programs: Client library for Vaultaire
pdynload library: pdynload is polymorphic dynamic linking library.
RandomDotOrg library: Interface to random.org
unamb library and program: Unambiguous choice
vaultaire-common library: Common types and instances for Vaultaire

PagerDuty

pagerduty library: Client library for PagerDuty Integration and REST APIs.

Parallelism

abstract-par library: Type classes generalizing the functionality of the 'monad-par' library.
abstract-par-accelerate library: Provides the class ParAccelerate, nothing more.
accelerate library: An embedded language for accelerated array processing
accelerate-cuda library: Accelerate backend for NVIDIA GPUs
accelerate-examples library and programs: Examples using the Accelerate library
accelerate-fft library: FFT using the Accelerate library
accelerate-io library: Read and write Accelerate arrays in various formats
accelerate-utility library: Utility functions for the Accelerate framework
cnc-spec-compiler program: Compiler/Translator for CnC Specification Files.
concurrent-supply library: A fast concurrent unique identifier supply with a pure API
edenmodules library: Semi-explicit parallel programming library
fpnla-examples library: Example implementations for FPNLA library
gang-of-threads library: Non-deterministic parallelism with bags
haskell-cnc library and program: Library for parallel programming in the Intel Concurrent Collections paradigm.
hdph library and programs: Haskell distributed parallel Haskell
linear-accelerate library: Instances to use linear vector spaces on accelerate backends
LogicGrowsOnTrees library and programs: a parallel implementation of logic programming using distributed tree exploration
LogicGrowsOnTrees-MPI library and programs: an adapter for LogicGrowsOnTrees that uses MPI
LogicGrowsOnTrees-network library and programs: an adapter for LogicGrowsOnTrees that uses multiple processes running in a network
LogicGrowsOnTrees-processes library and programs: an adapter for LogicGrowsOnTrees that uses multiple processes for parallelism
meta-par library: Provides the monad-par interface, but based on modular scheduler "mix-ins".
meta-par-accelerate library: Support for integrated Accelerate computations within Meta-par.
monad-par library: A library for parallel programming based on a monad
monad-par-extras library: Combinators and extra features for Par monads
parallel library: Parallel programming library
pooled-io library and program: Run jobs on a limited number of threads and support data dependencies
scan-vector-machine library: An implementation of the Scan Vector Machine instruction set in Haskell
schedyield library: Exposes standard POSIX function sched_yield.

Parry

Parry library: A proven synchronization server for high performance computing.

Parser

binary-parser library: A highly-efficient but limited parser API specialised for bytestrings
descrilo library: Loads a list of items with fields
fix-parser-simple library: Simple fix-expression parser
hs-logo program: Logo interpreter written in Haskell
htoml library and program: Parser for TOML files
hw-parser library: Conduits for tokenizing streams.
list-t-html-parser library: Streaming HTML parser
parser241 library: An interface to create production rules using augmented grammars
pipes-aeson library: Encode and decode JSON streams using Aeson and Pipes.
pipes-attoparsec library: Attoparsec and Pipes integration.
record-syntax library: A library for parsing and processing the Haskell syntax sprinkled with anonymous records
scotty-params-parser library: HTTP-request's query parameters parser abstraction for "scotty"
stompl library: Stomp Parser and Utilities
timerep library: Parse and display time according to some RFCs (RFC3339, RFC2822, RFC822)
tokenify library: A regex lexer

ParserCombinators

uu-parsinglib library: Fast, online, error-correcting, monadic, applicative, merging, permuting, ...
XSaiga library and program: An implementation of a polynomial-time top-down parser suitable for NLP

Parsers

definitive-parser library: A parser combinator library for the Definitive framework

Parsing

aeson-value-parser library: An API for parsing "aeson" JSON tree into Haskell types
antlrc library and program: Haskell binding to the ANTLR parser generator C runtime library.
appar library: A simple applicative parser
aterm library: serialisation for Haskell values with sharing support
attoparsec library: Fast combinator parsing for bytestrings and text
attoparsec-conduit library: Consume attoparsec parsers via conduit. (deprecated)
attoparsec-enumerator library: Pass input from an enumerator to an Attoparsec parser.
attoparsec-expr library: Port of parsec's expression parser to attoparsec.
attoparsec-parsec library: An Attoparsec compatibility layer for Parsec
attoparsec-text library: (deprecated)
attoparsec-text-enumerator library: (deprecated)
binary library: Binary serialisation for Haskell values using lazy ByteStrings
binary-bits library: Bit parsing/writing on top of binary.
binary-generic library: Generic binary serialisation using binary and syb.
binary-strict library: Binary deserialisation using strict ByteStrings
bond-haskell library: Runtime support for BOND serialization
boolexpr library: Boolean expressions with various representations and search queries.
boomerang library: Library for invertible parsing and printing
bytestringparser library: Combinator parsing with Data.ByteString.Lazy
bytestringparser-temporary library: Combinator parsing with Data.ByteString.Lazy
cassette library: A combinator library for simultaneously defining parsers and pretty printers.
cereal library: A binary serialization library
cereal-ieee754 library: Floating point support for the 'cereal' serialization library
ChristmasTree library: Alternative approach of 'read' that composes grammars instead of parsers.
codec-libevent library and program: Cross-platform structure serialisation
concrete-relaxng-parser program: A parser driven by a standard RELAX NG schema with concrete syntax extensions.
conf library: Parser for Haskell-based configuration files.
ConfigFile library and program: Configuration file reading & writing
ConfigFileTH library: Template haskell for reading ConfigFiles.
cron library: Cron datatypes and Attoparsec parser
cron-compat library: Cron datatypes and Attoparsec parser
crypto-pubkey-openssh library: OpenSSH keys decoder/encoder
data-reify library and programs: Reify a recursive data structure into an explicit graph.
data-treify library: Reify a recursive data structure into an explicit graph.
derp library: Derivative Parsing
descriptive library: Self-describing consumers/parsers; forms, cmd-line args, JSON, etc.
diff-parse library: A parser for diff file formats
dtd-text library: Parse and render XML DTDs
Earley library and programs: Parsing all context-free grammars using Earley's algorithm.
ebnf-bff library and program: Parser combinators & EBNF, BFFs!
EEConfig library: ExtremlyEasyConfig - Extremly Simple parser for config files
emacs-keys library: library to parse emacs style keybinding into the modifiers and the chars
expat-enumerator library: Enumerator-based API for Expat
expression-parser library: Generalization of parsec's expression parser.
fez-conf library: Simple functions for loading config files
fit library: FIT file decoder
fixhs library and program: FIX (co)parser
foscam-filename library: Foscam File format
foscam-sort library and program: Foscam File format
getflag library: Command-line parser.
grammar-combinators library: A parsing library of context-free grammar combinators.
Grempa library: Embedded grammar DSL and LALR parser generator
hascal library and program: A minimalistic but extensible and precise calculator
haskell-modbus library: A cereal-based parser for the Modbus protocol
hourglass-fuzzy-parsing library: A small library for parsing more human friendly date/time formats.
hsemail library: Internet Message Parsers
hsemail-ns library: Internet Message Parsers
hslogger-reader library and programs: Parsing hslogger-produced logs.
hsmisc library: A collection of miscellaneous modules
hspec-attoparsec library: Utility functions for testing your attoparsec parsers with hspec
hspec-megaparsec library: Utility functions for testing Megaparsec parsers with Hspec
html-entities library: A codec library for HTML-escaped text and HTML-entities
html-tokenizer library: An "attoparsec"-based HTML tokenizer
incremental-parser library: Generic parser library capable of providing partial results from partial input.
indentation library: Indentation sensitive parsing combinators for Parsec and Trifecta
IndentParser library: Combinators for parsing indentation based syntatic structures
indents library: indentation sensitive parser-combinators for parsec
infix library: Infix expression re-parsing (for HsParser library)
iteratee-parsec library: Package allowing parsec parser initeratee
json-incremental-decoder library: Incremental JSON parser with early termination and a declarative DSL
json-pointer library: JSON Pointer parsing and interpretation utilities
kangaroo library: Binary parsing with random access.
libxml-enumerator library: Enumerator-based API for libXML's SAX interface
libxml-sax library: Bindings for the libXML2 SAX interface
lispparser library: Simple parser for LISP S-expressions
list-t-attoparsec library: An "attoparsec" adapter for "list-t"
megaparsec library: Monadic parser combinators
mtlparse library: parse library using mtl package
multiarg library and programs: Command lines for options that take multiple arguments
netstring-enumerator library: Enumerator-based netstring parsing
network-attoparsec library: Utility functions for running a parser against a socket
nextstep-plist library: NextStep style plist parser and printer
opentheory-parser library: Stream parsers
papillon library and program: packrat parser
parco library: Generalised parser combinators
parco-attoparsec library: Generalised parser combinators - Attoparsec interface
parco-parsec library: Generalised parser combinators - Parsec interface
PArrows library: Arrow parser combinators similar to Parsec
parse-dimacs library: DIMACS CNF parser library
parsec library: Monadic parser combinators
parsec-extra library: Some miscellaneous basic string parsers.
parsec-numbers library: Utilities for parsing numbers from strings
parsec-parsers library: Parsing instances for Parsec
parsec-permutation library: Applicative permutation parser for Parsec intended as a replacement for Text.Parsec.Perm.
parsec-trace library: Add a hierarchical trace to Parsec parsers.
parsec-utils library: Utility functions and combinators for Text.Parsec
parsec1 library: Portable monadic parser combinators
parsec2 library: Monadic parser combinators
parsec3 library: Monadic parser combinators
parsec3-numbers library: Utilities for parsing numbers from Char sequences
ParsecTools library: Parsec combinators for more complex objects.
parsek library: Parallel Parsing Processes
parsely library
ParserFunction library: Parse and evaluate mathematical expressions.
parsers library: Parsing combinators
parsimony library: Monadic parser combinators derived from Parsec
penn-treebank library: Tools for manipulating the Penn TreeBank
permute library: Generalised permutation parser combinator
picoparsec library: Fast combinator parsing for bytestrings and text
pipes-parse library: Parsing infrastructure for the pipes ecosystem
polar-configfile library: Fork of ConfigFile for Polar Game Engine
polyparse library: A variety of alternative parser combinator libraries.
ponder library: PEG parser combinator
postgresql-binary library: Encoders and decoders for the PostgreSQL's binary format
property-list library: Apple property list parser
RefSerialize library: Write to and read from ByteStrings maintaining internal memory references
roman-numerals library: Parsing and pretty printing of Roman numerals
SableCC2Hs library and program: Generate a parser (in Haskell) with the SableCC parser generator.
safecopy library: Binary serialization with version control.
scanner library: Fast non-backtracking incremental combinator parsing for bytestrings
scanner-attoparsec library: Inject attoparsec parser with backtracking into non-backtracking scanner
sexp library and program: S-Expression parsing/printing made fun and easy
simple-atom library: Atom (or symbol) datatype for fast comparision and sorting.
strptime library: Efficient parsing of LocalTime using a binding to C's strptime, ...
subtitleParser library: A parser for .srt and .sub files
supplemented library: Early termination for monads
SVG2Q program: Code generation tool for Quartz code from a SVG.
svg2q program: Code generation tool for Quartz code from a SVG.
syntactical library: Distfix expression parsing library
tconfig library: Simple text configuration file parser library.
trifecta library: A modern parser combinator library with convenient diagnostics
utc library: A pragmatic time and date library.
uu-interleaved library: ...
uu-parsinglib library: Fast, online, error-correcting, monadic, applicative, merging, permuting, ...
uu-tc library: Haskell 98 parser combintors for INFOB3TC at Utrecht University
uulib library: Haskell Utrecht Tools Library
vcs-revision library: Facilities for accessing the version control revision of the current directory.
weighted-regexp library and programs: Weighted Regular Expression Matcher
WikimediaParser library: A parser for wikimedia style article markup.
xml-parsec library: Parsing XML with Parsec
xml-query library: A parser-agnostic declarative API for querying XML-documents
xml-query-xml-conduit library: A binding for the "xml-query" and "xml-conduit" libraries
xml-query-xml-types library: An interpreter of "xml-query" queries for the "xml-types" documents
XSaiga library and program: An implementation of a polynomial-time top-down parser suitable for NLP
yajl-enumerator library: Enumerator-based interface to YAJL, an event-based JSON implementation
yoctoparsec library: A truly tiny monadic parsing library

Password

scat program: Generates unique passwords for various websites from a single password.
Tahin library and program: Tahin Password Generator
wordpass library and program: Dictionary-based password generator

Pattern Classification

DecisionTree library: A very simple implementation of decision trees for discrete attributes.
svm-simple library: Medium level, simplified, bindings to libsvm

Pattern Recognition

hps-kmeans library: A nice implementation of the k-Means algorithm.

PDF

haskell-pdf-presenter program: Tool for presenting PDF-based presentations.
hpdft library: A tool for looking through PDF file using Haskell
manatee-pdfviewer library and program: PDF viewer extension for Manatee.
pdf-toolbox-content library: A collection of tools for processing PDF files
pdf-toolbox-core library: A collection of tools for processing PDF files.
pdf-toolbox-document library: A collection of tools for processing PDF files.
pdf-toolbox-viewer program: Simple pdf viewer
pdfsplit program: split two-column PDFs, so there is one column per page

PDF Viewer

manatee-pdfviewer library and program: PDF viewer extension for Manatee.

Performance

criterion library and program: Robust, reliable performance measurement and analysis

Persistent

persistent-audit library and program: Parses a Persist Model file and produces Audit Models

PersonalGrowth

Randometer program: Randomness intuition trainer

Phantom Types

tagged library: Haskell 98 phantom types to avoid unsafely passing dummy arguments
tagged-exception-core library: Reflect exceptions using phantom types.
tagged-th library: QuasiQuoter and Template Haskell splices for creating proxies at higher-kinds
tagged-transformer library: Provides newtype wrappers for phantom types to avoid unsafely passing dummy arguments
type-hint library: Guide type inference with proxy values

Phishing

phizzle library: Library for checking if a given link is in a phishtank json file

Physics

bullet library: A wrapper for the Bullet physics engine.
dimensional library: Statically checked physical dimensions, using Type Families and Data Kinds.
dimensional-codata library: CODATA Recommended Physical Constants with Dimensional Types
dimensional-tf library: Statically checked physical dimensions, implemented using type families.
dsmc library: DSMC library for rarefied gas dynamics
dsmc-tools programs: DSMC toolkit for rarefied gas dynamics
fitsio library: A library for reading and writing data files in the FITS data format.
force-layout library: Simple force-directed layout
hepevt library: HEPEVT parser
HGamer3D-Bullet-Binding library: Windows Game Engine for the Haskell Programmer - Bullet Bindings
Hipmunk library: A Haskell binding for Chipmunk.
HipmunkPlayground program: A playground for testing Hipmunk.
HODE library: Binding to libODE
lambdacube-bullet library: Example for combining LambdaCube and Bullet
learn-physics library and programs: Haskell code for learning physics
learn-physics-examples programs: examples for learn-physics
lha library: Data structures for the Les Houches Accord
lhe library: Parser and writer for Les-Houches event files
quantities library and program: Unit conversion and manipulation library.
science-constants library: Mathematical/physical/chemical constants
science-constants-dimensional library: Mathematical/physical/chemical constants
units-attoparsec library: Attoparsec parsers for the units package
units-defs library: Definitions for use with the units package
unittyped library: An extendable library for type-safe computations including units.

Pipes

ChannelT library: Generalized stream processors
dirstream library: Easily stream directory contents in constant memory
pipe-enumerator library: A bidirectional bridge between pipes and iteratees
pipes library: Compositional pipelines
pipes-aeson library: Encode and decode JSON streams using Aeson and Pipes.
pipes-attoparsec library: Attoparsec and Pipes integration.
pipes-bgzf library: Blocked GZip
pipes-binary library: Encode and decode binary streams using the pipes and binary libraries.
pipes-bytestring library: ByteString support for pipes
pipes-cacophony library: Pipes for Noise-secured network connections.
pipes-cellular library: Pipes-based combinators for cellular data processing
pipes-cellular-csv library: Efficient pipes-based cellular CSV codec
pipes-cereal library: Encode and decode binary streams using the pipes and cereal libraries.
pipes-cereal-plus library: A streaming serialization library on top of "pipes" and "cereal-plus"
pipes-cliff library and programs: Streaming to and from subprocesses using Pipes
pipes-concurrency library: Concurrency for the pipes ecosystem
pipes-courier library: Pipes utilities for interfacing with the courier message-passing framework.
pipes-csv library: Fast, streaming csv parser
pipes-errors library: Integration between pipes and errors
pipes-extras library: Extra utilities for pipes
pipes-fastx library: Streaming parsers for Fasta and Fastq
pipes-group library: Group streams into substreams
pipes-http library: HTTP client with pipes interface
pipes-key-value-csv library: Streaming processing of CSV files preceded by key-value pairs.
pipes-network library: Use network sockets together with the pipes library.
pipes-network-tls library: TLS-secured network connections support for pipes.
pipes-p2p library: P2P network nodes with pipes
pipes-p2p-examples program: Examples using pipes-p2p
pipes-parse library: Parsing infrastructure for the pipes ecosystem
pipes-postgresql-simple library: Convert various postgresql-simple calls to work with pipes
pipes-rt library and program: A few pipes to control the timing of yields
pipes-safe library: Safety for the pipes ecosystem
pipes-shell library: Create proper Pipes from System.Process
pipes-text library: properly streaming text
pipes-wai library: A port of wai-conduit for the pipes ecosystem
pipes-zeromq4 library and programs: Pipes integration for ZeroMQ messaging
pipes-zlib library: Zlib and GZip compression and decompression for Pipes streams
streaming library: an elementary streaming prelude and general stream type.
streaming-bytestring library: effectful byte steams, or: bytestring io done right.
streaming-utils library: http, attoparsec, pipes and conduit utilities for the streaming libraries

PL/SQL Tools

PlslTools program: So far just a lint like program for PL/SQL. Diff and refactoring tools are planned

Planning

schedule-planner program: Find the ideal lesson layout

Plotting

easyplot library: A tiny plotting library, utilizes gnuplot for plotting.

Polymorphism

prelude-extras library: Higher order versions of Prelude classes
syb-extras library: Higher order versions of the Scrap Your Boilerplate classes

PostgreSQL

hasql library: A very efficient PostgreSQL driver and a flexible mapping API
hasql-optparse-applicative library: "optparse-applicative" parsers for "hasql"
hasql-pool library: A pool of connections for Hasql
hasql-th library: Template Haskell utilities for Hasql
hasql-transaction library: A composable abstraction over the retryable transactions for Hasql
postgresql-binary library: Encoders and decoders for the PostgreSQL's binary format
postgresql-error-codes library: PostgreSQL error codes

Prelude

awesome-prelude library: A prelude which I can be happy with. Based on base-prelude.
base library: Basic libraries
base-prelude library: The most complete prelude formed from only the "base" package
basic-prelude library: An enhanced core prelude; a common foundation for alternate preludes.
cafeteria-prelude library: Prelude subsets—take only what you want!
chorale library: A module containing basic functions that the prelude does not offer
classy-prelude library: A typeclass-based Prelude.
classy-prelude-conduit library: conduit instances for classy-prelude
definitive-base library: The base modules of the Definitive framework.
haskell2010 library: Compatibility with Haskell 2010
haskell98 library: Compatibility with Haskell 98
hydrogen library: An alternate Prelude
interlude-l library: Prelude replacement based on protolude
mtl-prelude library: Reexports of most definitions from "mtl" and "transformers"
overture library: An alternative to some of the Prelude.
pregame library: Prelude counterpart
prelude-compat library: Provide Prelude and Data.List with fixed content across GHC versions
prelude-generalize library: Another kind of alternate Prelude file
prelude-prime library: A slightly better (but conservative) Prelude
prelude-safeenum library: A redefinition of the Prelude's Enum class in order to render it safe.
prelude2010 library: Provide Prelude with fixed content across GHC versions
protolude library: A sensible set of defaults for writing custom Preludes.
SimpleH library: A light, clean and powerful Haskell utility library
yap library: yet another prelude - a simplistic refactoring with algebraic classes

Preprocessor

hampp program: Haskell macro preprocessor
record-preprocessor library and program: Compiler preprocessor introducing a syntactic extension for anonymous records
record-syntax library: A library for parsing and processing the Haskell syntax sprinkled with anonymous records

Pretty Printer

aeson-pretty library and program: JSON pretty-printing library and command-line tool.
bit-array library: A bit array (aka bitset, bitmap, bit vector) API for numeric types
GenericPretty library: A generic, derivable, haskell pretty printer.
layout library: Turn values into pretty text or markup
pattern-arrows library: Arrows for Pretty Printing
repr-tree-syb library: Tree representation and pretty-printing of data structures based on SYB
trifecta library: A modern parser combinator library with convenient diagnostics
xhtml library: An XHTML combinator library

Process Manager

manatee-processmanager library and program: Process manager extension for Manatee.

Profiling

edentv program: A Tool to Visualize Parallel Functional Program Executions
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-events-analyze program: Analyze and visualize event logs
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC
hp2any-core library: Heap profiling helper library
hp2any-graph programs: ...
hp2any-manager program: A utility to visualise and compare heap profiles.
hp2html program: A tool for converting GHC heap-profiles to HTML.
linux-perf library and programs: Read files generated by perf on Linux
NoSlow programs: Microbenchmarks for various array libraries
prof2pretty programs: generate pretty source from time/allocation profiles
threadscope program: A graphical tool for profiling parallel Haskell programs.

Program Transformation

hfusion library: A library for fusing a subset of Haskell programs.
optimusprime program: A supercompiler for f-lite

Protocol

fixhs library and program: FIX (co)parser
hoauth library: A Haskell implementation of OAuth 1.0a protocol.
remotion library: A library for client-server applications based on custom protocols
salvia-protocol library: Salvia webserver protocol suite supporting URI, HTTP, Cookie and MIME.

Proxies

ChannelT library: Generalized stream processors

Pugs

HsParrot library: Haskell integration with Parrot virtual machine
HsPerl5 library: Haskell interface to embedded Perl 5 interpreter
HsSyck library: Fast, lightweight YAML loader and dumper
MetaObject library: A meta-object system for Haskell based on Perl 6
Pugs program: A Perl 6 Implementation
pugs-compat library: Portable Haskell/POSIX layer for Pugs
pugs-DrIFT library and program: DrIFT with pugs-specific rules.
stringtable-atom library: Memoize Strings as Atoms for fast comparison and sorting, with maps and sets

Pup-Events

Pup-Events library and program: A networked event handling framework for hooking into other programs.
Pup-Events-Client library: A networked event handling framework for hooking into other programs.
Pup-Events-Demo programs: A networked event handling framework for hooking into other programs.
Pup-Events-PQueue library: A networked event handling framework for hooking into other programs.
Pup-Events-Server library: A networked event handling framework for hooking into other programs.

PureScript

psc-ide library and programs: Language support for the PureScript programming language

Quantum

newsynth library and program: Exact and approximate synthesis of quantum circuits
QIO library: The Quantum IO Monad is a library for defining quantum computations in Haskell

QuasiQoutes

neat-interpolation library: A quasiquoter for neat and simple multiline text interpolation

QuasiQuotes

dump library: Dumps the names and values of expressions to ease debugging.
numeric-qq library: Quasi-quoters for numbers of different bases
time-qq library: Quasi-quoter for UTCTime times

QuickCheck

quickcheck-regex library: Generate regex-constrained strings for QuickCheck
quickcheck-relaxng library: Generate RelaxNG-constrained XML documents for QuickCheck

Qux

language-qux library: Utilities for working with the Qux language
qux program: Command line binary for working with the Qux language

RAKE

rake library: Rapid Automatic Keyword Extraction (RAKE)

Random

AC-Random library: A pure Haskell PRNG.
rand-vars library: Random variable library, with Functor, Applicative and Monad instances.
Random123 library: Haskell port of Random123 library
rng-utils library: RNG within an MVar for convenient concurrent use
sfmt library: SIMD-oriented Fast Mersenne Twister(SFMT) binding.
tf-random library: High-quality splittable pseudorandom number generator
threefish library: The Threefish block cipher and the Skein hash function for Haskell.

Raspberrypi

mcpi library and programs: Connect to MineCraft running on a Raspberry PI.

RDF

rdf4h library and program: A library for RDF processing in Haskell

Reactive

definitive-reactive library: A simple Reactive library.
midair library: Hot-swappable FRP
reflex-dom library: Functional Reactive Web Apps with Reflex

Reactivity

Animas library: Updated version of Yampa: a library for programming hybrid systems.
bot library: bots for functional reactive programming
Dflow library: Processing Real-time event streams
dow program: Dungeons of Wor
elerea library: A minimalistic FRP library
elerea-examples programs: Example applications for Elerea
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-frp library: Functional Reactive Programming core
grapefruit-records library: A record system for Functional Reactive Programming
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
io-reactive library and program: An API for generating TIMBER style reactive objects.
machinecell library: Arrow based stream transducers
midair library: Hot-swappable FRP
reaction-logic library and program: pluggable pure logic serializable reactor
reactive library: Push-pull functional reactive programming
reactive-haskell library: minimal fork of io-reactive
reactivity library: An alternate implementation of push-pull FRP.
reenact library: A reimplementation of the Reactive library.
reflex-dom library: Functional Reactive Web Apps with Reflex
resumable-exceptions library: A monad transformer for resumable exceptions
wxFruit library and program: An implementation of Fruit using wxHaskell.
Yampa library: Library for programming hybrid systems.
Yampa-core library and programs: Library for programming hybrid systems.
YFrob library: Yampa-based library for programming robots

Records

audiovisual library: A battery-included audiovisual framework
extensible library: Extensible, efficient, lens-friendly data types
named-records library: Flexible records with named fields.
record library: Anonymous records
record-aeson library: Instances of "aeson" classes for the "record" types
record-preprocessor library and program: Compiler preprocessor introducing a syntactic extension for anonymous records
record-syntax library: A library for parsing and processing the Haskell syntax sprinkled with anonymous records
records library: A flexible record system
vinyl library: Extensible Records

Recursion

metamorphic library: metamorphisms: ana . cata or understanding folds and unfolds
recursion-schemes library: Generalized bananas, lenses and barbed wire
tie-knot library: "Ties the knot" on a given set of structures that reference each other by keys.

Refactoring

HaRe program: the Haskell Refactorer.
hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel
module-management library and program: Clean up module imports, split and merge modules

Reflection

data-reify library and programs: Reify a recursive data structure into an explicit graph.
data-treify library: Reify a recursive data structure into an explicit graph.
global-variables library: Namespaced, global, and top-level mutable variables without unsafePerformIO.
hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel
reflection library: Reifies arbitrary terms into types that can be reflected back into terms
typehash library: Create a unique hash value for a type.
yoko library: Generic Programming with Disbanded Data Types

Regex

quickcheck-regex library: Generate regex-constrained strings for QuickCheck
re2 library: Bindings to the re2 regular expression library
regex-genex library and program: From a regex, generate all possible strings it can match
regexchar library and program: A POSIX, extended regex-engine.
regexdot library: A polymorphic, POSIX, extended regex-engine.

Relaxng

quickcheck-relaxng library: Generate RelaxNG-constrained XML documents for QuickCheck

REPL

repl-toolkit library: Toolkit for quickly whipping up config files and command-line interfaces.

Reverse Engineering

dewdrop library: Find gadgets for return-oriented programming on x86
hdis86 library: Interface to the udis86 disassembler for x86 and x86-64 / AMD64
tttool program: Working with files for the Tiptoi® pen

RFC

idna library: Implements IDNA (RFC 3490).

Robotics

NXT library and programs: A Haskell interface to Lego Mindstorms NXT
pcd-loader library and program: PCD file loader.
RMP library and programs: Binding to code that controls a Segway RMP
roshask library and program: Haskell support for the ROS robotics framework.

Romans

libroman library: arabic to roman numeral conversions

RSS

manatee-reader library and program: Feed reader extension for Manatee.
ureader program: Minimalistic CLI RSS reader.

RSS/Atom Reader

manatee-reader library and program: Feed reader extension for Manatee.

Saas

hPushover library: Pushover.net API functions

Safe

listsafe library: Safe wrappers for partial list functions, supporting MonadThrow.

Sample Code

parconc-examples programs: Examples to accompany the book "Parallel and Concurrent Programming in Haskell"

Scheduling

fuzzy-timings library: ...
hcron library: A simple job scheduler, which just runs some IO action at a given time.
turni program: shifts scheduling tool

Science

atmos library: 1976 US Standard Atmosphere Model
atmos-dimensional library: dimensional wrapper on atmos package
atmos-dimensional-tf library: dimensional-tf wrapper on atmos package
dynobud library and programs: your dynamic optimization buddy
hfoil library and program: Hess-Smith panel code for inviscid 2-d airfoil analysis
igrf library: International Geomagnetic Reference Field
science-constants library: Mathematical/physical/chemical constants
science-constants-dimensional library: Mathematical/physical/chemical constants
TBit library: Utilities for condensed matter physics tight binding calculations.

Scientific Simulation

simgi program: stochastic simulation engine

Screencast

osdkeys library and program: Show keys pressed with an on-screen display (Linux only)

Screensaver

TimePiece library and program: A simple tile-based digital clock screen saver

Scripting

hscrtmpl program: Haskell shell script template
hslua library: A Lua language interpreter embedding in Haskell
luachunk library: Library functions for reading and writing Lua chunks
luautils library: Helpers for Haskell integration with Lua
shell-conduit library: Write shell scripts with Conduit
timestamp-subprocess-lines program: Run a command and timestamp its stdout/stderr lines

Search

bloodhound library: ElasticSearch client library for Haskell
boolexpr library: Boolean expressions with various representations and search queries.
Condor library and program: Information retrieval library
condor library and program: Information retrieval library
full-text-search library and program: In-memory full text search engine
infinite-search library: Exhaustively searchable infinite sets.
regexdot library: A polymorphic, POSIX, extended regex-engine.
search library: Infinite search in finite time with Hilbert's epsilon
sphinx library: Haskell bindings to the Sphinx full-text searching daemon.
sphinx-cli program: Sphinx CLI and demo of Haskell Sphinx library
stringsearch library: Fast searching, splitting and replacing of ByteStrings

Security

bindings-sipc library and programs: Low level bindings to SIPC.
Capabilities library: Separate and contain effects of IO monad.
dclabel library: This packge is deprecated. See the the "LIO.DCLabel" in the "lio" package.
dclabel-eci11 library: The Disjunction Category Label Format.
dewdrop library: Find gadgets for return-oriented programming on x86
faceted library: Faceted computation for dynamic information flow security
flowlocks-framework library: Generalized Flow Locks Framework
GoogleSB library: Interface to Google Safe Browsing API
jail library: Jailed IO monad.
lio library: Labeled IO Information Flow Control Library
lio-eci11 library: Labeled IO library
lio-fs library: Labeled File System interface for LIO
lmonad library: LMonad is an Information Flow Control (IFC) framework for Haskell applications.
lmonad-yesod library: LMonad for Yesod integrates LMonad's IFC with Yesod web applications.
mac library: Static Mandatory Access Control in Haskell
safe-access library: A simple environment to control access to data
scyther-proof program: Automatic generation of Isabelle/HOL correctness proofs for security protocols.
seclib library: A simple library for static information-flow security in Haskell
secrm program: Example of writing "secure" file removal in Haskell rather than C.
sme library: A library for Secure Multi-Execution in Haskell

Selenium

webdriver library: a Haskell client for the Selenium WebDriver protocol

Semantic Web

hasparql-client library: This package enables to write SPARQL queries to remote endpoints.
swish library and programs: A semantic web toolkit.
yaml2owl program: Generate OWL schema from YAML syntax, and an RDFa template.

Semigroups

reducers library: Semigroups, specialized containers and a general map/reduce framework

Serialization

arith-encode library: A practical arithmetic encoding (aka Godel numbering) library.
beamable library: Generic serializer/deserializer with compact representation
binary-typed library: Type-safe binary serialization
bits library: Various bit twiddling and bitwise serialization primitives
BitSyntax library: A module to aid in the (de)serialisation of binary data
bytes library: Sharing code for serialization between binary and cereal
cereal-plus library: An extended serialization library on top of "cereal"
enumeration library: A practical API for building recursive enumeration procedures and enumerating datatypes.
packman library: Serialization library for GHC
pgp-wordlist library: Translate between binary data and a human-readable collection of words.
pipes-cereal-plus library: A streaming serialization library on top of "pipes" and "cereal-plus"
tagged-binary library: Provides tools for serializing data tagged with type information.

Service

remotion library: A library for client-server applications based on custom protocols
twill library: Twilio API interaction
wobsurv library and program: A simple and highly performant HTTP file server

Services

plivo library: Plivo API wrapper for Haskell

Set Theory

LargeCardinalHierarchy library: A transfinite cardinal arithmetic library including all known large cardinals

Shake

shake library and program: Build system library, like Make, but more accurate dependencies.
shake-minify library: Shake Minify Rules
shake-pack library: Shake File Pack Rule

Shell

hell library and program: A Haskell shell based on shell-conduit
Hish library and program

Silk

rest-stringmap library: Maps with stringy keys that can be transcoded to JSON and XML.

Simulation

aivika library: A multi-paradigm simulation library
aivika-branches library: Branching discrete event simulation library
aivika-distributed library: Parallel distributed simulation library
aivika-experiment library: Simulation experiments for the Aivika library
aivika-experiment-cairo library: Cairo backend for the Aivika simulation library
aivika-experiment-chart library: Simulation experiments with charting for the Aivika library
aivika-experiment-diagrams library: Diagrams backend for the Aivika simulation library
aivika-transformers library: Transformers for the Aivika simulation library
dominion library and program: A simulator for the board game Dominion.
hs-carbon library: A Haskell framework for parallel monte carlo simulations
hs-carbon-examples programs: Example Monte Carlo simulations implemented with Carbon
lambda-devs library and program: a Paralell-DEVS implementaion based on distributed-process
SoOSiM library: Abstract full system simulator

SMT

Hsmtlib library: Haskell library for easy interaction with SMT-LIB 2 compliant solvers.
linearEqSolver library: Use SMT solvers to solve linear systems over integers and rationals
sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.
sbvPlugin library: Formally prove properties of Haskell programs using SBV/SMT
smtLib library: A library for working with the SMTLIB format.
smtlib2 library: A type-safe interface to communicate with an SMT solver.
z3 library and program: Bindings for the Z3 Theorem Prover

Snap

atlassian-connect-core library: Atlassian Connect snaplet for the Snap Framework and helper code.
heist library: An Haskell template system supporting both HTML5 and XML.
hspec-snap library: A library for testing with Hspec and the Snap Web Framework
restful-snap library
ses-html-snaplet library: Snaplet for the ses-html package
snap library and program: Top-level package for the Snap Web Framework
snap-auth-cli program: Command-line tool to manage Snap AuthManager database
snap-core library: Snap: A Haskell Web Framework (core interfaces and types)
snap-extras library and program: A collection of useful helpers and utilities for Snap web applications.
snap-loader-dynamic library: Snap: A Haskell Web Framework: dynamic loader
snap-loader-static library: Snap: A Haskell Web Framework: static loader
snap-predicates library: Declarative routing for Snap.
snap-server library: A fast, iteratee-based, epoll-enabled web server for the Snap Framework
snap-testing library: A library for BDD-style testing with the Snap Web Framework
snap-utils library: Snap Framework utilities.
snap-web-routes library: Type safe URLs for Snap
snaplet-acid-state library: acid-state snaplet for Snap Framework
snaplet-actionlog library: Generic action log snaplet for the Snap Framework
snaplet-auth-acid library: Provides an Acid-State backend for the Auth Snaplet
snaplet-coffee library: CoffeeScript for Snap, auto-compilation and pre-compilation.
snaplet-fay library: Fay integration for Snap with request- and pre-compilation.
snaplet-haxl library: Snaplet for Facebook's Haxl
snaplet-mysql-simple library: mysql-simple snaplet for the Snap Framework
snaplet-persistent library: persistent snaplet for the Snap Framework
snaplet-postgresql-simple library: postgresql-simple snaplet for the Snap Framework
snaplet-postmark library: Postmark snaplet for the Snap Framework
snaplet-redis library: Redis support for Snap Framework
snaplet-redson library: CRUD for JSON data with Redis storage
snaplet-sass library: Sass integration for Snap with request- and pre-compilation.
snaplet-ses-html library: Snaplet for the ses-html package
snaplet-sqlite-simple library: sqlite-simple snaplet for the Snap Framework
snaplet-stripe library: Stripe snaplet for the Snap Framework

Snaplet-fay

olwrapper library and program: An OpenLayers JavaScript Wrapper and Webframework with snaplet-fay

Socket

socket-sctp library: STCP socket extensions library.

Software Defined Radio

rtlsdr library: Bindings to librtlsdr
sdr library: A software defined radio library

Sorting

discrimination library: Fast generic linear-time sorting, joins and container construction.

Sound

al library: OpenAL 1.1 raw API.
alsa library: Binding to the ALSA Library API.
alsa-core library: Binding to the ALSA Library API (Exceptions).
alsa-gui programs: Some simple interactive programs for sending MIDI control messages via ALSA
alsa-midi library and programs: Bindings for the ALSA sequencer API (MIDI stuff)
alsa-mixer library: Bindings to the ALSA simple mixer API.
alsa-pcm library and programs: Binding to the ALSA Library API (PCM audio).
alsa-pcm-tests programs: Tests for the ALSA audio signal library.
alsa-seq library and programs: Binding to the ALSA Library API (MIDI sequencer).
alsa-seq-tests programs: Tests for the ALSA sequencer library.
alure library: A Haskell binding for ALURE
ALUT library and programs: A binding for the OpenAL Utility Toolkit
audacity library and program: Interchange with the Audacity sound signal editor
Bang library: A Drum Machine DSL for Haskell
bindings-fluidsynth library: Haskell FFI bindings for fluidsynth software synthesizer
bindings-portaudio library: Low-level bindings to portaudio library
bindings-sc3 library: Low-level bindings to the SuperCollider synthesis engine library.
conductive-base library: a library for live coding and real-time musical applications
conductive-clock library: a library for displaying musical time in a terminal-based clock
conductive-hsc3 library: a library with examples of using Conductive with hsc3
conductive-song library: a library of functions which are useful for composing music
conduit-audio library: Combinators to efficiently slice and dice audio streams
conduit-audio-lame library: conduit-audio interface to the LAME MP3 library
conduit-audio-samplerate library: conduit-audio interface to the libsamplerate resampling library
conduit-audio-sndfile library: conduit-audio interface to the libsndfile audio file library
csound-expression library: library to make electronic music
csound-expression-dynamic library: dynamic core for csound-expression library
csound-expression-opcodes library: opcodes for the library csound-expression
csound-expression-typed library: typed core for the library csound-expression
DirectSound library: Partial binding to the Microsoft DirectSound API.
djembe library: Hit drums with haskell
dsp library and programs: Haskell Digital Signal Processing
dywapitchtrack library: Bindings to the dywapitchtrack pitch tracking library
EsounD library and program: Type-safe bindings to EsounD (ESD; Enlightened Sound Daemon)
Euterpea library: Library for computer music research and education
flaccuraterip program: Verify FLAC files ripped form CD using AccurateRip™
fluidsynth library: Haskell bindings to FluidSynth
FModExRaw library: The Haskell FModEx raw API.
freesound library: Access the Freesound Project database
gulcii program: graphical untyped lambda calculus interactive interpreter
hamid library: Binding to the OS level Midi services (fork of system-midi).
haskore library and programs: The Haskore Computer Music System
haskore-realtime library: Routines for realtime playback of Haskore songs
haskore-supercollider library and programs: Haskore back-end for SuperCollider
haskore-synthesizer library and program: Music rendering coded in Haskell
hbeat program: A simple step sequencer GUI.
hCsound library: interface to CSound API
hdf library: HDF: Uniform Rate Audio Signal Processing in Haskell
hemkay program: A module music mixer and player
hemkay-core library: A device independent module music mixer
hmeap library: Haskell Meapsoft Parser
hmeap-utils programs: Haskell Meapsoft Parser Utilities
hmidi library: Binding to the OS level MIDI services
hmp3 program: An ncurses mp3 player written in Haskell
hommage library: Haskell Offline Music Manipulation And Generation EDSL
hommage-ds library: DirectSound extension (Windows) for the Hommage sound library
honk library: Cross-platform interface to the PC speaker.
hosc library: Haskell Open Sound Control
hosc-json library: Haskell Open Sound Control JSON Serialisation
hosc-utils programs: Haskell Open Sound Control Utilities
hplaylist program: Application for managing playlist files on a music player
hsc3 library: Haskell SuperCollider
hsc3-auditor library: Haskell SuperCollider Auditor
hsc3-cairo library: haskell supercollider cairo drawing
hsc3-data library: haskell supercollider data
hsc3-db library: Haskell SuperCollider Unit Generator Database
hsc3-dot library: haskell supercollider graph drawing
hsc3-forth program: FORTH SUPERCOLLIDER
hsc3-graphs library and programs: Haskell SuperCollider Graphs
hsc3-lang library: Haskell SuperCollider Language
hsc3-lisp program: LISP SUPERCOLLIDER
hsc3-plot library: Haskell SuperCollider Plotting
hsc3-process library and programs: Create and control scsynth processes
hsc3-rec library: Haskell SuperCollider Record Variants
hsc3-rw library: hsc3 re-writing
hsc3-server library and programs: SuperCollider server resource management and synchronization.
hsc3-sf library: Haskell SuperCollider SoundFile
hsc3-sf-hsndfile library: Haskell SuperCollider SoundFile
hsc3-unsafe library: Unsafe Haskell SuperCollider
hsc3-utils library and programs: Haskell SuperCollider Utilities
hsdif library: Haskell SDIF
hsharc library: Haskell SHARC bindings
hsndfile library: Haskell bindings for libsndfile
hsndfile-storablevector library: Haskell bindings for libsndfile (Data.StorableVector interface)
hsndfile-vector library: Haskell bindings for libsndfile (Data.Vector interface)
HSoundFile library: Audio file reading/writing
hspear library: Haskell Spear Parser
htaglib library: Bindings to TagLib, audio meta-data library
htune program: harmonic analyser and tuner for musical instruments
hXmixer program: A Gtk mixer GUI application for FreeBSD
idiii library and program: ID3v2 (tagging standard for MP3 files) library
jack library and programs: Bindings for the JACK Audio Connection Kit
jack-bindings library: DEPRECATED Bindings to the JACK Audio Connection Kit
JackMiniMix library: control JackMiniMix
jackminimix library: control JackMiniMix
jammittools library and program: Export sheet music and audio from Windows/Mac app Jammit
libmpd library: An MPD client library.
live-sequencer library and programs: Live coding of MIDI music
loris library: interface to Loris API
lye program: A Lilypond-compiling music box
midi library: Handling of MIDI messages and files
midi-alsa library: Convert between datatypes of the midi and the alsa packages
midi-music-box program: Convert MIDI file to music box punch tape
midimory program: A Memory-like (Concentration, Pairs, ...) game for tones
midisurface program: A control midi surface
mikmod library: MikMod bindings
mp program: Music player for linux.
mtp library: Bindings to libmtp
MusicBrainz-libdiscid library: Binding to libdiscid by MusicBrainz
OpenAL library and program: A binding to the OpenAL cross-platform 3D audio API
opensoundcontrol-ht library: Haskell OpenSoundControl utilities
osc library: A library to handle messages in the OSC protocol
pitchtrack library: Pitch tracking library
portaudio library: Haskell bindings for the PortAudio library.
PortMidi library: A binding for PortMedia/PortMidi
proteaaudio library: Simple audio library for Windows, Linux, OSX.
pulse-simple library: binding to Simple API of pulseaudio
reactive-balsa library: Programmatically edit MIDI events via ALSA and reactive-banana
rubberband library: Binding to the C++ audio stretching library Rubber Band
sample-frame library and program: Handling of samples in an (audio) signal
sample-frame-np library: Orphan instances for types from sample-frame and numericprelude
sarasvati library: audio library.
sc3-rdu library: Haskell bindings to sc3-rdu (sc3 rd ugens)
sfml-audio library: minimal bindings to the audio module of sfml
sharc-timbre library: ...
sndfile-enumerators library: Audio file reading/writing
sonic-visualiser library and program: Sonic Visualiser
sound-collage program: Approximate a song from other pieces of sound
sounddelay program: Audio delay line
sox library: Play, write, read, convert audio signals using Sox
soxlib library and program: Write, read, convert audio signals using libsox
split-record program: Split a big audio file into pieces at positions of silence
streamed library: Programmatically edit MIDI event streams via ALSA
supercollider-ht library and program: Haskell SuperCollider utilities
supercollider-midi programs: Demonstrate how to control SuperCollider via ALSA-MIDI
synthesizer library and programs: Audio signal processing coded in Haskell
synthesizer-alsa library and programs: Control synthesizer effects via ALSA/MIDI
synthesizer-core library: Audio signal processing coded in Haskell: Low level part
synthesizer-dimensional library and programs: Audio signal processing with static physical dimensions
synthesizer-filter library: Audio signal processing coded in Haskell: Filter networks
synthesizer-inference library and program: Audio signal processing with dynamic physical dimensions
synthesizer-llvm library and programs: Efficient signal processing using runtime compilation
synthesizer-midi library and programs: Render audio signals from MIDI files or realtime messages
taglib library: Binding to TagLib (ID3 tag library)
temporal-csound library: library to make electronic music, ...
tidal library: Pattern language for improvised music
tidal-midi library: MIDI support for tidal
tidal-vis library: Visual rendering for Tidal patterns
truelevel program: Audio file compressor-limiter
vimus library and program: An MPD client with vim-like key bindings
vision program: An XMMS2 client.
vivid library: Sound synthesis with SuperCollider
vorbiscomment library: Reading of Vorbis comments from Ogg Vorbis files
wavconvert program: Command-line tool for converting audio files and filling in ID3 tags
WAVE library and program: WAVE audio file IO library
wavesurfer library: Parse WaveSurfer files
wavy library and programs: Process WAVE files in Haskell.
webrtc-vad library: Easy voice activity detection
x-dsp library: A embedded DSL for manipulating DSP languages in Haskell
xine library: Bindings to xine-lib
XMMS library: XMMS2 client library.
xmms2-client library: An XMMS2 client library.
xmms2-client-glib library: An XMMS2 client library — GLib integration.
YampaSynth programs: Software synthesizer
zoom-cache-pcm library: Library for zoom-cache PCM audio codecs
zoom-cache-sndfile program: Tools for generating zoom-cache-pcm files

Source Code Analysis

cantor program: Application for analysis of java source code

Source Tools

HPath library and program: Extract Haskell declarations by name.

Source-tools

djinn program: Generate Haskell code from a type
ftshell program: Shell interface to the FreeTheorems library.
hscope program: cscope like browser for Haskell code
htags program: A Haskell98 parsing tags program similar to ctags.
interpol library and program: GHC preprocessor and library to enable variable interpolation in strings
ixdopp program: A preprocessor for expanding "ixdo" notation for indexed monads
preprocessor-tools library: A framework for extending Haskell's syntax via quick-and-dirty preprocessors
sugarhaskell programs: Library-based syntactic extensibility for Haskell

Static Analysis

argon program: Measure your code's complexity
maam library and program: Monadic Abstracting Abstract Machines (MAAM) built on Galois Transformers
ShellCheck library and program: Shell script analysis tool

Statistical Modeling

passage library: Parallel code generation for hierarchical Bayesian modeling.

Statistics

affine-invariant-ensemble-mcmc library: General-purpose sampling
approx-rand-test library and programs: Approximate randomization test
combinatorics library: Efficient computation of common combinatoric functions.
eigen library: Eigen C++ library (linear algebra: matrices, sparse matrices, vectors, ...
estimator library: State-space estimation algorithms such as Kalman Filters
exact-combinatorics library: Efficient exact computation of combinatoric functions.
fastbayes library: Bayesian modeling algorithms accelerated for particular model structures
foldl-incremental library: incremental folds
HasGP library: A Haskell library for inference using Gaussian processes
hdr-histogram library: Haskell implementation of High Dynamic Range (HDR) Histograms
hieraclus library: Automated clustering of arbitrary elements in Haskell.
HLearn-distributions library: Distributions for use with the HLearn library
hmatrix-gsl-stats library: GSL Statistics interface
hps-kmeans library: A nice implementation of the k-Means algorithm.
HROOT library: Haskell binding to ROOT RooFit modules
HROOT-core library: Haskell binding to ROOT Core modules
HROOT-graf library: Haskell binding to ROOT Graf modules
HROOT-hist library: Haskell binding to ROOT Hist modules
HROOT-io library: Haskell binding to ROOT IO modules
HROOT-math library: Haskell binding to ROOT Math modules
hstatistics library: Statistics
learn library: Learning Algorithms
learning-hmm library: Yet another library for hidden Markov models
liblinear-enumerator library: liblinear iteratee.
linda library: LINear Discriminant Analysis
logfloat library: Log-domain floating point numbers
mcmc-samplers library: Combinators for MCMC sampling
Metrics library: Evaluation metrics commonly used in supervised machine learning
monoid-statistics library: Monoids for calculation of statistics of sample
mwc-random library: Fast, high quality pseudo random number generation
mwc-random-monad library: Monadic interface for mwc-random
NestedSampling library: A port of John Skilling's nested sampling C code to Haskell.
normaldistribution library: Minimum fuss normally distributed random values.
order-statistics library: L-Estimators for robust statistics
probable library: Easy and reasonably efficient probabilistic programming and random generation
random-variates library and program: "Uniform RNG => Non-Uniform RNGs"
rclient library: Haskell client for Rserve
StatisticalMethods library: Collection of useful statistical methods.
statistics library: A library of statistical types, data, and functions
statistics-hypergeometric-genvar library: Random variate generation from hypergeometric distributions
statistics-linreg library: Linear regression between two samples, based on the 'statistics' package.

STM

stm-containers library: Containers for STM

Stochastic Control

teams library: Graphical modeling tools for sequential teams

Stomp

stomp-conduit library: Stompl Conduit Client
stomp-patterns library: Stompl MOM Stomp Patterns
stomp-queue library: Stompl Client Library
stompl library: Stomp Parser and Utilities

Streaming

list-t library: ListT done right
list-t-attoparsec library: An "attoparsec" adapter for "list-t"
list-t-html-parser library: Streaming HTML parser
list-t-http-client library: A streaming HTTP client
list-t-libcurl library: A "libcurl"-based streaming HTTP client
list-t-text library: A streaming text codec
streaming library: an elementary streaming prelude and general stream type.
streaming-bytestring library: effectful byte steams, or: bytestring io done right.
streaming-png library and program: Perfectly streaming PNG image decoding
streaming-utils library: http, attoparsec, pipes and conduit utilities for the streaming libraries
tubes library: Write stream processing computations with side effects in a series of tubes.

String

neat-interpolation library: A quasiquoter for neat and simple multiline text interpolation
string-conv library: Standardized conversion between string types
strings library: Functions for working with strings, including Text, ByteString, etc.

Structures

structures library: "Advanced" Data Structures

Subversion

svndump library: Library for reading Subversion dump files

Support Vector Machine

svm-simple library: Medium level, simplified, bindings to libsvm

Svg

rasterific-svg library and program: SVG renderer based on Rasterific.
svg-tree library: SVG file loader and serializer

Symbolic Computation

sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.
sbvPlugin library: Formally prove properties of Haskell programs using SBV/SMT
smtlib2 library: A type-safe interface to communicate with an SMT solver.
symengine-hs library and program: SymEngine symbolic mathematics engine for Haskell

Syntax

array-memoize library: Memoization combinators using arrays for finite sub-domains of functions
ListWriter library: define a list constant using Monadic syntax other than overhead [,]
prettyFunctionComposing library: prettier function composition by (°)
record-syntax library: A library for parsing and processing the Haskell syntax sprinkled with anonymous records

System

AC-BuildPlatform library: Detect which OS you're running on.
access-time library: Cross-platform support for retrieving file access times
aligned-foreignptr library: An aligned ForeignPtr type
android library: Android methods exposed to Haskell
angel program: Process management and supervision daemon
apotiki library and program: a faster debian repository
archive library and program: A library and programs for creating hardlinked incremental archives or backups
ascii-progress library and programs: A simple progress bar for the console.
async-pool library: ...
atomic-write library: Atomically write to a file
augeas library and program: A Haskell FFI wrapper for the Augeas API
authinfo-hs library: Password querying for .authinfo
autonix-deps library: Library for Nix expression dependency generation
autonix-deps-kf5 library and program: Generate dependencies for KDE 5 Nix expressions
autoproc library and program: EDSL for Procmail scripts
AWin32Console library: A binding to a part of the ANSI escape code for the console
bamse library and programs: A Windows Installer (MSI) generator framework
base-io-access library: The IO functions included in base delimited into small, composable classes
bench program: Command-line benchmark tool
bindings-dc1394 library: Library for using firewire (iidc-1394) cameras
bindings-libv4l2 library: bindings to libv4l2 for Linux
bindings-mmap library: (deprecated) see bindings-posix instead
bindings-uname library: Low-level binding to POSIX uname(3)
bkr library and program: Backup utility for backing up to cloud storage services (S3 only right now)
bla program: a stupid cron
bluetile programs: full-featured tiling for the GNOME desktop environment
broadcast-chan library: Broadcast channel type that avoids 0 reader space leaks.
bsd-sysctl library: Access to the BSD sysctl(3) interface
btrfs library and programs: Bindings to the btrfs API
bus-pirate library: Haskell interface to the Bus Pirate binary interface
byline library and programs: Library for creating command-line interfaces (colors, menus, etc.)
byteorder library: Exposes the native endianness or byte ordering of the system.
bytestring-handle library: ByteString-backed Handles
bytestring-mmap library: mmap support for strict ByteStrings
c-io library: C IO.
cabal-debian library and program: Create a Debianization for a Cabal package
cabal-query library: Helpers for quering .cabal files or hackageDB's 00-index.tar
cabal2spec program: Generates RPM Spec files from cabal files
canonical-filepath library: Abstract data type for canonical file paths.
cautious-file library: Ways to write a file cautiously, ...
cef library: CEF log format
chalk library: Terminal string styling.
church-list library: Removed; please see fmlist.
Clipboard library: System clipboard interface.
clippard library: A simple Haskell library for copying text to the clipboard in a cross-platform way.
clock library: High-resolution clock functions: monotonic, realtime, cputime.
cloudyfs program: A cloud in the file system.
cmd-item library: Library to compose and reuse command line fragments
cmdlib library and programs: a library for command line parsing & online help
CMQ library: cwmwl udp message queue
colock library: thread-friendly file locks that don't block the entire program
Command library: A replacement for System.Exit and System.Process
command library: Conveniently run shell commands
command-qq library: Quasiquoters for external commands
config-select program: A small program for swapping out dot files.
Conscript program: Restart a command on STDIN activity
consistent library: Eventually consistent STM transactions.
console-program library: Interpret the command line and settings in a config file as commands and options
CoreFoundation library: Bindings to Mac OSX's CoreFoundation framework
cpuperf program: Modify the cpu frequency on OpenBSD systems
cr program: Code review tool
crack library: A haskell binding to cracklib
cron library: Cron datatypes and Attoparsec parser
cron-compat library: Cron datatypes and Attoparsec parser
crystalfontz library: Control Crystalfontz LCD displays.
current-locale library: Get the current system locale in System.Locale format
daemons library and programs: Daemons in Haskell made fun and easy
darcs-buildpackage programs: Tools to help manage Debian packages with Darcs
datapacker program: Tool to help pack files into the minimum number of CDs/DVDs/etc
date-cache library: Date cacher
debian-binary library and programs: Utilities to work with debian binary packages
delay library: More useful and humain delaying functions
denominate library and program: Functions supporting bulk file and directory name normalization.
DescriptiveKeys library: A library for specifying xmonad key bindings with functionality.
devil program: A small tool to make it easier to update program managed by Angel.
dfsbuild program: Build Debian From Scratch CD/DVD images
diffdump programs: Tools for diffing stdout
direct-daemonize library: Library to switch to daemon mode using built-in OS facilities.
direct-plugins library: Lightweight replacement for Plugins, specific to GHC
directory library: Platform-agnostic library for filesystem operations
directory-layout library: Directory layout DSL
directory-tree library: A simple directory-like tree datatype, with useful IO functions
dirstream library: Easily stream directory contents in constant memory
DiscussionSupportSystem library: Discussion support system
disk-free-space library: Retrieve information about disk space usage
DisTract library and programs: Distributed Bug Tracking System
distributed-process-ekg library: Collect node stats for EKG
dotfs library and program: Filesystem to manage and parse dotfiles
drawille library and programs: A port of asciimoo's drawille to haskell
dtrace library and program: Haskell interface to the DTrace system tracing utility
dvdread library: A monadic interface to libdvdread
dynamic-linker-template library: Automatically derive dynamic linking methods from a data type.
dynamic-loader library: lightweight loader of GHC-based modules or packages
dzen-utils library: Utilities for creating inputs for dzen.
easy-file library: Cross-platform File handling
ekg library: Remote monitoring of processes
ekg-bosun library: Send ekg metrics to a Bosun instance
ekg-core library: Tracking of system metrics
ekg-log library: Push metrics to a log file.
ekg-push library and program: Small framework to push metric deltas to a broadcast channel using the ekg-core library.
ekg-rrd library: Passes ekg statistics to rrdtool
ekg-statsd library: Push metrics to statsd
env-parser library: Pull configuration information from the ENV
envparse library: Parse environment variables
envy library: An environmentally friendly way to deal with environment variables
epoll library: epoll bindings
exception-mailer library: Catch all runtime exceptions and send an email
executable-hash library and program: Provides the SHA1 hash of the program executable
executable-path library: Finding out the full path of the executable.
exit-codes library: Exit codes as defined by BSD
explicit-iomodes library: File handles with explicit IOModes
explicit-iomodes-bytestring library: Extends explicit-iomodes with ByteString operations
explicit-iomodes-text library: Extends explicit-iomodes with Text operations
fake-type library: A crossplatform library to simulate keyboard input
farmhash library: Fast hash functions.
fast-logger library: A fast logging system
file-command-qq library: Quasiquoter for system commands involving filepaths
filelock library: Portable interface to file locking (flock / LockFileEx)
FileManip library: Expressive file and directory manipulation for Haskell.
filemanip library: Expressive file and directory manipulation for Haskell.
FileManipCompat library: Expressive file and directory manipulation for Haskell.
filepath library: Library for manipulating FilePaths in a cross platform way.
FilePather library: Functions on System.FilePath
filepather library: Functions on System.FilePath
FileSystem library: File system data structure and monad transformer.
filesystem-enumerator library: Enumerator-based API for manipulating the filesystem.
filesystem-trees library: Recursively manipulate and traverse filesystems as lazy rose trees.
find-conduit library and program: A file-finding conduit that allows user control over traversals.
FindBin library: Locate directory of original program
flock library: Wrapper for flock(2)
fs-events library: A haskell binding to the FSEvents API
fsutils library: File system utilities for Haskell that are missing from built in libraries.
ftdi program: A thin layer over USB to communicate with FTDI chips
funion program: A unioning file-system using HFuse
futun program: Simple IP-over-UDP tunnel using TUNTAP
gconf library: Binding to the GNOME configuration database system.
getopt-generics library: Create command line interfaces with ease
getopt-simple library: A "System.Console.GetOpt" wrapper to make simple use case easy.
ggtsTC program: A type checker and runtime system of rCOS/g (impl. of ggts-FCS).
ghc-man-completion program: Generate a bash completion from the GHC manpage
gio library: Binding to GIO
glib library: Binding to the GLIB library for Gtk2Hs.
Glob library: Globbing library
global library: Library enabling unique top-level declarations
global-lock library: A global lock implemented without unsafePerformIO
gnomevfs library: Binding to the GNOME Virtual File System library.
goa library: GHCi bindings to lambdabot
graceful library: Library to write graceful shutdown / upgrade service.
graph-serialize library: Serialization of data structures with references.
halfs library and programs: The HAskelL File System ("halfs" -- intended for use on the HaLVM)
hamid library: Binding to the OS level Midi services (fork of system-midi).
handsy library: ...
hapistrano library and program: A deployment library for Haskell applications
harchive programs: Networked content addressed backup and restore software.
hark program: A Gentoo package query tool.
hashed-storage library and program: Hashed file storage support code.
haskdeep program: Computes and audits file hashes.
haskell-bcrypt library: A bcrypt implementation for haskell
haskell-read-editor library: Opens a temporary file on the system's EDITOR and returns the resulting edits
Hclip library: A small cross-platform library for reading and modifying the system clipboard.
hcwiid library: Library to interface with the wiimote
hdaemonize library: Library to handle the details of writing daemons for UNIX
hdaemonize-buildfix library: Library to handle the details of writing daemons for UNIX
hdm program: a small display manager.
hen library: Haskell bindings to Xen hypervisor interface
hfsevents library: File/folder watching for OS X
HFuse library and program: HFuse is a binding for the Linux FUSE library.
hg-buildpackage programs: Tools to help manage Debian packages with Mercurial
hi3status library and programs: Status line for i3bar.
hid library: Interface to hidapi library
hiernotify library: Notification library for a filesystem hierarchy.
himpy program: multithreaded snmp poller for riemann
hinotify library: Haskell binding to inotify
hinotify-bytestring library: Haskell binding to inotify, using ByteString filepaths
hinstaller library: Installer wrapper for Haskell applications
hlwm library and program: Bindings to the herbstluftwm window manager
hmatrix-mmap library: Memory map Vector from disk into memory efficiently
hmenu program: CLI fuzzy finder and launcher
hmidi library: Binding to the OS level MIDI services
HNM library and program: Happy Network Manager
hobbes program: A small file watcher for OSX
hooks-dir library: run executables in a directory as hooks
hotswap library: Simple code hotswapping.
hpapi library: Binding for the PAPI library
HPi library: GPIO, I2C and SPI functions for the Raspberry Pi.
hs-mesos library and programs
hsbackup program: simple utility for rolling filesystem backups
hscamwire library: Haskell bindings to IIDC1394 cameras, via Camwire
hsclock program: An elegant analog clock using Haskell, GTK and Cairo
hsdip library and program: hsdip - a Diplomacy parser/renderer
hsfacter library: A small and ugly library that emulates the output of the puppet facter program.
HSH library and program: Library to mix shell scripting with Haskell programs
HSHHelpers library: Convenience functions that use HSH, instances for HSH.
hslogstash library: A library to work with, or as, a logstash server
hsntp library and programs: Libraries to use SNTP protocol and small client/server implementations.
HsOpenSSL-x509-system library: Use the system's native CA certificate store with HsOpenSSL
hsoptions library and programs: Haskell library that supports command-line flag processing
hsseccomp library: Haskell bindings to libseccomp
hsshellscript library: Haskell for Unix shell scripting tasks
HsSVN library: Partial Subversion (SVN) binding for Haskell
hstatsd library: Quick and dirty statsd interface
hsXenCtrl library: FFI bindings to the Xen Control library.
htime program: Timing utility for the command line
hurdle program: Extract function names from Windows DLLs.
ibus-hs library: A simple uncomplete ibus api
ignore library and program: Handle ignore files of different VCSes
io-capture library: Capture IO actions' stdout and stderr
io-memoize library: Memoize IO actions
io-storage library: A key-value store in the IO monad.
ioctl library: Type-safe I/O control package
IOR library: Region based resource management for the IO monad.
ipc library: High level inter-process communication library
ipcvar library: Simple inter-process communication through IPCVars.
iptadmin program: web-interface for iptables
isdicom library and program: An executable and library to determine if a file is a DICOM file
iteratee library: Iteratee-based I/O
iteratee-mtl library and program: Iteratee-based I/O
iterIO library: Iteratee-based IO with pipe operators
jail library: Jailed IO monad.
keyring library and program: Keyring access
knob library: Memory-backed handles
kqueue library: A binding to the kqueue event library.
Lambdaya library: Library for RedPitaya
lambdaya-bus library: Fpga bus core and serialization for RedPitaya
language-puppet library and programs: Tools to parse and evaluate the Puppet DSL.
launchpad-control library and program: High and low-level interface to the Novation Launchpad midi controller.
lazy-io library: Lazy IO
leapseconds-announced library: Leap seconds announced at library release time.
libexpect library: Library for interacting with console applications via pseudoterminals.
libnotify library: Bindings to libnotify library
libsystemd-daemon library: Haskell bindings for libsystemd-daemon.
libsystemd-journal library: Haskell bindings to libsystemd-journal
libvirt-hs library: FFI bindings to libvirt virtualization API (http://libvirt.org)
linkchk program: linkchk is a network interface link ping monitor.
linux-blkid library: Linux libblkid
linux-cgroup library: Very basic interface to the Linux CGroup Virtual Filesystem
linux-evdev library: Bindings to Linux evdev input device interface.
linux-file-extents library and program: Retrieve file fragmentation information under Linux
linux-inotify library: Thinner binding to the Linux Kernel's inotify interface
linux-kmod library: Linux kernel modules support
linux-mount library: Mount and unmount filesystems
linux-namespaces library: Create new or enter an existing linux namespaces
linux-ptrace library: Wrapping of Linux' ptrace(2).
linux-xattr library: Read, set and list extended attributes
list-prompt library and program: A simple list prompt UI for the terminal.
loadavg library: Load average parsing from /proc/loadavg and bindings to getloadavg (3)
lock-file library: Provide exclusive access to a resource using lock file.
log library: Structured logging solution with multiple backends
logger library: Fast & extensible logging framework
logging library: Simplified logging in IO for application writers.
logging-facade library: Simple logging abstraction that allows multiple back-ends
logging-facade-journald library: Journald back-end for logging-facade
logsink library: A logging framework for Haskell
ls-usb program: List USB devices
lxc library: High level Haskell bindings to LXC (Linux containers).
machines-binary library: Binary utilities for the machines library
machines-directory library: Directory (system) utilities for the machines library
machines-io library: IO utilities for the machines library
machines-process library: Process (system) utilities for the machines library
make-hard-links program: Change duplicated files into hard-links.
manatee-processmanager library and program: Process manager extension for Manatee.
matrix-market library: Read and write NIST Matrix Market files
mbox library: Read and write standard mailbox files.
mersenne-random library: Generate high quality pseudorandom numbers using a SIMD Fast Mersenne Twister
mersenne-random-pure64 library: Generate high quality pseudorandom numbers purely using a Mersenne Twister
metronome library: Time Synchronized execution.
microtimer library: A tiny library for benchmarking IO actions.
minimal-configuration library: Minimal ini like configuration library with a few extras
miniplex library and programs: simple 1-to-N interprocess communication
mmap library and program: Memory mapped files for POSIX and Windows
modbus-tcp library: Communicate with Modbus devices over TCP
mole program: A glorified string replacement tool
monad-logger library: A class of monads which can log messages.
monad-parallel-progressbar library: Parallel execution of monadic computations with a progress bar
monitor program: Do things when files change.
mount library: Mounts and umounts filesystems
mountpoints library: list mount points
mpdmate program: MPD/PowerMate executable
msi-kb-backlit program: A command line tool to change backlit colors of your MSI keyboards
mute-unmute program: Watches your screensaver and (un)mutes music when you (un)lock the screen.
myo library and program: Haskell binding to the Myo armband
nagios-check library: Package for writing monitoring plugins
nagios-plugin-ekg library and program: Monitor ekg metrics via Nagios
nano-cryptr library: A threadsafe binding to glibc's crypt_r function
nanomsg library: nanomsg - scalability protocols library
nc-indicators program: CPU load and memory usage indicators for i3bar
netlink library: Netlink communication for Haskell
network-server library and program: A light abstraction over sockets & co. for servers
newports program: List ports newer than N days on a FreeBSD system
nitro library: Haskell bindings for Nitro
nptools programs: A collection of random tools
old-locale library: locale library
old-time library: Time library
openssh-github-keys library and program: Fetch OpenSSH keys from a GitHub team
optparse-applicative library: Utilities and combinators for parsing command line options
optparse-declarative library: Declarative command line option parser
optparse-generic library: Auto-generate a command-line parser for your datatype
os-release library: /etc/os-release helpers
pacman-memcache program: Read whole Pacman database which pushes it into the memory cache
pager library and program: Open up a pager, like 'less' or 'more'
pam library: Haskell binding for C PAM API
partly library and program: Inspect, create, and alter MBRs.
path-io library: Interface to ‘directory’ package for users of ‘path’
pathtype library and program: Type-safe replacement for System.FilePath etc
pathwalk library: Path walking utilities for Haskell programs
pbc4hs library: pbc for HsLua
pcg-random library: Haskell bindings to the PCG random number generator.
Pipe library: Process piping library
pipeclip program: Open your editor, pipe the output to the system clipboard
plan-b library: Failure-tolerant file and directory editing
plugins library: Dynamic linking for Haskell and C objects
plugins-auto library: Automatic recompilation and reloading of haskell modules.
plugins-multistage library: Dynamic linking for embedded DSLs with staged compilation
poll library: Bindings to poll.h
pony program: Can I have a pony?
popenhs library: popenhs is a popen-like library for Haskell.
porte library and program: FreeBSD ports index search and analysis tool
PortFusion program: high-performance distributed reverse / forward proxy & tunneling for TCP
posix-acl library: Support for Posix ACL
posix-escape library: Quote arguments to be passed through the Unix shell
posix-filelock library: Nice wrapper around POSIX fcntl advisory locks
posix-paths library: POSIX filepath/directory functionality
posix-pty library: Pseudo terminal interaction with subprocesses.
posix-realtime library: POSIX Realtime functionality
posix-timer library: Bindings to POSIX clock and timer functions.
posix-waitpid library: Low-level wrapping of POSIX waitpid(2).
potato-tool program: Command line Dreamcast VMU filesystem toolset.
powermate library: PowerMate bindings
prefork library and programs: A library for building a prefork-style server quickly
prelude-plus program: Prelude for rest of us
proc library: Parse process information for Linux
process library: Process libraries
process-conduit library: Conduits for processes (deprecated)
process-extras library: Process extras
process-iterio library: IterIO Process Library
process-leksah library: Process libraries
process-listlike library: Process extras
process-progress library: Run a process and do reportsing on its progress.
process-qq library: Quasi-Quoters for exec process
process-streaming library: Streaming interface to system processes.
processor-creative-kit library: a creation kit for instruction sets and cpu simulators and development tools
procstat library: get information on processes in Linux
progressbar library and program: Progressbar API
projectroot library: Bindings to the projectroot C logic
prometheus library: Prometheus Haskell Client
puppetresources program: A program that displays the puppet resources associated to a node given .pp files.
questioner library and programs: A package for prompting values from the command-line.
rados-haskell library: librados haskell bindings
rainbow library: Print text to terminal with colors and effects
rainbow-tests library: Tests and QuickCheck generators to accompany rainbow.
randfile program: Program for picking a random file
random library: random number library
random-shuffle library: Random shuffle implementation.
random-stream library: An infinite stream of random data
randomgen program: A fast, SMP parallel random data generator
randsolid program: Set the background of your root window to a random colour.
read-editor library and programs: Opens a temporary file on the system's EDITOR and returns the resulting edits
read-env-var library: Functions for safely reading environment variables.
regional-pointers library: Regional memory pointers
repl-toolkit library: Toolkit for quickly whipping up config files and command-line interfaces.
restricted-workers library: Running worker processes under system resource restrictions
retryer program: Retry failed commands
rewrite program: open file and rewrite it with new contents
riot program: Riot is an Information Organisation Tool
RMP library and programs: Binding to code that controls a Segway RMP
rpm library and program: Cozy little project to question unruly rpm packages.
rtld library: dynamic linker tools for Haskell
ruby-qq library: rubyish quasiquoters
safe-lazy-io library: A library providing safe lazy IO features.
safe-plugins library: A small wrapper over hs-plugins to allow loading safe plugins
safer-file-handles library: Type-safe file handling
safer-file-handles-bytestring library: Extends safer-file-handles with ByteString operations
safer-file-handles-text library: Extends safer-file-handles with Text operations
schedyield library: Exposes standard POSIX function sched_yield.
scp-streams library and programs: An SCP protocol implementation.
ScratchFs program: Size limited temp filesystem based on fuse
scrz program: Process management and supervision daemon
select library: Wrap the select(2) POSIX function
selinux library: SELinux bindings
Semantique program: Command-line tool for maintaining the Semantique database.
serf library: Interact with Serf via Haskell.
serial library: POSIX serial port wrapper
setenv library: A cross-platform library for setting environment variables
setlocale library: Haskell bindings to setlocale
sha-streams library and program: SHA hashes for io-streams.
shana library: treat haskell functions as unix pipes
shared-buffer library: A circular buffer built on shared memory
shell-pipe library and programs: Pipe streams through external shell commands
shellmate library: Simple interface for shell scripting in Haskell.
shqq library: Embed shell commands with interpolated Haskell variables, and capture output
signal library and program: Multiplatform signal support for Haskell
silently library: Prevent or capture writing to stdout and other handles.
simple-firewire library: Simplified interface for firewire cameras
simpleargs library: Provides a more flexible getArgs function with better error reporting.
SimpleLog library: Simple, configurable logging
sink library: An alternative to lazy I/O that doesn't conflate execution with evaluation
sleep library and program: zZzzZz
socket library: An extensible socket library.
socket-sctp library: STCP socket extensions library.
splice library: Cross-platform Socket to Socket Data Splicing
srcinst program: Build and install Debian packages completely from source
sshd-lint program: Check sshd configuration for adherence to best practices
statgrab library: Collect system level metrics and statistics
statvfs library: Get unix filesystem statistics with statfs, statvfs
stickyKeysHotKey library: get and set STICKYKEYS.SKF_HOTKEYACTIVE
stm-delay library: Updatable one-shot timer polled with STM
strict library: Strict data types and String IO.
strict-io library: A library wrapping standard IO modules to provide strict IO.
strptime library: Efficient parsing of LocalTime using a binding to C's strptime, ...
super-user-spark library and program: Configure your dotfile deployment with a DSL.
sys-auth-smbclient library: Auth with smbclient command
sys-process library: A replacement for System.Exit and System.Process.
system-argv0 library: Get argv[0] as a FilePath.
system-canonicalpath library: Abstract data type for canonical paths with some utilities
system-command library: A replacement for System.Exit and System.Process
system-fileio library: Consistent filesystem interaction across GHC versions (deprecated)
system-filepath library: High-level, byte-based file and directory path manipulations (deprecated)
system-gpio library: GPIO wrapper libary for Raspberry Pi
system-inotify library: Binding to Linux's inotify interface
system-lifted library and program: Lifted versions of System functions.
system-posix-redirect library: A toy module to temporarily redirect a program's stdout.
system-random-effect library: Random number generation for extensible effects.
system-time-monotonic library: Simple library for using the system's monotonic clock
system-util library: Various system utils lifted to EitherT
system-uuid library and program: Bindings to system UUID functions.
systemd library: Systemd facilities (Socket activation, Notify)
tabloid program: View the output of shell commands in a table
taffybar library and program: A desktop bar similar to xmobar, but with more GUI
tagged-timers library: Simple wrappers for timing IO actions (single-threaded)
taskpool library: Manage pools of possibly interdependent tasks using STM and async
temporary library: Portable temporary file and directory support for Windows and Unix, ...
temporary-rc library: Portable temporary file and directory support for Windows and Unix, ...
temporary-resourcet library: Portable temporary files and directories with automatic deletion
terminal-progress-bar library: A simple progress bar in the terminal
terminal-size library: Get terminal window height and width
terminfo-hs library: A pure-Haskell (no FFI) module for accessing terminfo databases
texrunner library: Functions for running Tex from Haskell.
text1 library: Non-empty values of `Data.Text`.
thread-local-storage library: Several options for thread-local-storage (TLS) in Haskell.
threadPool program: Runs other programs in the manner of a thread pool
thyme library: A faster time library
tianbar library and program: A desktop bar based on WebKit
time library: A time library
time-cache library: Cache current time and formatted time text
time-compat library: Compatibility with old-time for the time package
time-extras library: Data instances for the time package
time-locale-compat library: Compatibility of TimeLocale between old-locale and time-1.5
time-recurrence library: Generate recurring dates.
timeit library: Time a computation
timelike library: Type classes for types representing time
timelike-clock library: Timelike interface for the clock library
timelike-time library: Timelike interface for the time library
timestamper program: Read standard input and prepend each line with a timestamp
timing-convenience library: Convenient functions for getting times.
tinylog library: Simplistic logging using fast-logger.
touched library and program: Library (and cli) to execute a procedure on file change.
transformers-supply library: Supply applicative, monad, applicative transformer and monad transformer.
turtle library: Shell programming, Haskell-style
twitch library: A high level file watcher DSL
uacpid program: Userspace Advanced Configuration and Power Interface event daemon
udev library and programs: libudev bindings
unicode-prelude library: Unicode notation for some definitions in Prelude
uniform-io library: Uniform IO over files, network, anything.
unix library: POSIX functionality
unix-bytestring library: Unix/Posix-specific functions for ByteStrings.
unix-compat library: Portable POSIX-compatibility layer.
unix-fcntl library and program: Comprehensive bindings to fcntl(2)
unix-handle library: POSIX operations on Handles
unix-io-extra library: Support for writev, pwrite and pread.
unix-memory library: Unix memory syscalls
unix-process-conduit library: Run processes on Unix systems, with a conduit interface (deprecated)
unix-pty-light library: POSIX pseudo-terminal support
Unixutils library: A crude interface between Haskell and Unix-like operating systems
Unixutils-shadow library: A simple interface to shadow passwords (aka, shadow.h)
usb library: Communicate with USB devices
usb-enumerator library: Iteratee enumerators for the usb package
usb-hid library: Parser and request Library for USB HIDs
usb-id-database library and program: A database of USB identifiers
usb-iteratee library: Iteratee enumerators for the usb package
usb-safe library: Type-safe communication with USB devices.
utf8-env library: UTF-8 aware substitutes for functions in System.Environment
utf8-prelude library and program: Variants of Prelude and System.IO with UTF8 text I/O operations
vcs-revision library: Facilities for accessing the version control revision of the current directory.
vhd library and program: Provides functions to inspect and manipulate virtual hard disk (VHD) files.
vk-posix-pty library and program: Pseudo terminal interaction with subprocesses.
voyeur library: Haskell bindings for libvoyeur
waitfree library: A wrapping library for waitfree computation.
watcher library: Opinionated filesystem watcher
whim library and program: A Haskell window manager
win-hp-path library and program: Work with multiple Haskell Platform versions on Windows
Win32 library: A binding to part of the Win32 library
Win32-dhcp-server library: Win32 DHCP Server Management API
Win32-errors library: Alternative error handling for Win32 foreign calls
Win32-extras library: Provides missing Win32 API
Win32-junction-point library: Support for manipulating NTFS junction points.
Win32-notify library and program: A binding to part of the Win32 library for file notification
Win32-security library and programs: Haskell bindings to a security-related functions of the Windows API
Win32-services library: Windows service applications
Win32-services-wrapper library: Wrapper code for making a Win32 service
winio library: I/O library for Windows
wl-pprint-ansiterm library: ANSI Terminal support with wl-pprint-extras
wlc-hs library: Haskell bindings for the wlc library
wordexp library: wordexp(3) wrappers
wordpass library and program: Dictionary-based password generator
wordsetdiff program: Compare two files as sets of N-tuples of words.
XAttr library: Read, set, and list extended attributes
xattr library: Haskell extended file attributes interface
xdg-basedir library: A basic implementation of the XDG Base Directory specification.
xdg-userdirs library: Basic implementation of XDG user directories specification
xenstore library and program: Xenstore client access
xfconf library and programs: FFI bindings to xfconf
XInput library: Bindings for the DirectX XInput library.
xmltv library and program: Show tv channels in the terminal
xmobar program: A Minimalistic Text Based Status Bar
xmonad programs: A tiling window manager
xmonad-bluetilebranch program: A tiling window manager
xmonad-contrib library: Third party extensions for xmonad
xmonad-contrib-bluetilebranch library: Third party extensions for xmonad
xmonad-contrib-gpl library: Third party extensions for xmonad
xmonad-eval library: Module for evaluation Haskell expressions in the running xmonad instance
xmonad-extras library: Third party extensions for xmonad with wacky dependencies
xmonad-utils programs: A small collection of X utilities
xmonad-wallpaper library: xmonad wallpaper extension
yaop library: Yet another option parser
yet-another-logger library and program: Yet Another Logger
zeromq-haskell library: Bindings to ZeroMQ 2.1.x
zeromq3-haskell library: Bindings to ZeroMQ 3.x
zeromq4-haskell library: Bindings to ZeroMQ 4.x
zoneinfo library: ZoneInfo library.
ztail program: Multi-file, colored, filtered log tailer.

System Tools

ports-tools library: Library to interact with port tools on FreeBSD

Tasty-kat

tasty-kat library: Known Answer Tests (KAT) framework for tasty

Teaching

cakyrespa program: run turtle like LOGO with lojban
gluturtle library: turtle like LOGO with glut
lambda-toolbox program: An application to work with the lambda calculus (for learning)
simpleprelude library and programs: A simplified Haskell prelude for teaching
wxturtle library and program: turtle like LOGO with wxHaskell
xturtle library: turtle like LOGO

Template

ede library: Templating language with similar syntax and features to Liquid or Jinja2.
ehs library and program: Embedded haskell template using quasiquotes.
manatee-template library and program: Template code to create Manatee application.
plat library: Simple templating library
template-hsml library: Haskell's Simple Markup Language
themplate program: Project templating tool

Template Haskell

antiquoter library: Combinator library for quasi- and anti-quoting.
ConfigFileTH library: Template haskell for reading ConfigFiles.
flexible-defaults library: Generate default function implementations for complex type classes.
haskell-src-meta library: Parse source to template-haskell abstract syntax.
hasql-th library: Template Haskell utilities for Hasql
language-haskell-extract library: Module to automatically extract functions from the local code.
lenz-template library: Van Laarhoven lens templates
multirec-alt-deriver library: Alternative multirec instances deriver
newtype-deriving library: Instance derivers for newtype wrappers
newtype-th library: A template haskell deriver to create Control.Newtype instances.
notcpp library: Avoiding the C preprocessor via cunning use of Template Haskell
pseudomacros library: cpp-style built-in macros using Template Haskell
tagged-th library: QuasiQuoter and Template Haskell splices for creating proxies at higher-kinds
template-haskell library: Support library for Template Haskell
template-haskell-util library: Some utilities for template Haskell.
th-build library: More convenient construction of TH ASTs
th-context library: Test instance context
th-desugar library: Functions to desugar Template Haskell
th-expand-syns library: Expands type synonyms in Template Haskell ASTs
th-extras library: A grab bag of functions for use with Template Haskell
th-instance-reification library: Fixed versions of instances reification functions
th-kinds library: Automated kind inference in Template Haskell.
th-kinds-fork library: Automated kind inference in Template Haskell.
th-lift-instances library: Lift instances for template-haskell for common data types.
th-orphans library: Orphan instances for TH datatypes
th-reify-many library: Recurseively reify template haskell datatype info
th-sccs library: Binding group analysis in Template Haskell
th-traced library: Tracing Q monad computation
th-typegraph library: Graph of the subtype relation
tuple-th library: Generate (non-recursive) utility functions for tuples of statically known size
uuid-orphans library: Orphan instances for the UUID datatype

Templating

template-hsml library: Haskell's Simple Markup Language

Terminal

HaMinitel library: An Haskell library to drive the french Minitel through a serial port
terminfo-hs library: A pure-Haskell (no FFI) module for accessing terminfo databases

Test

arith-encode library: A practical arithmetic encoding (aka Godel numbering) library.
chuchu library: Behaviour Driven Development like Cucumber for Haskell
enumeration library: A practical API for building recursive enumeration procedures and enumerating datatypes.
hpc-tracer program: Tracer with AJAX interface
hspec-structured-formatter library
http-test library and program: Test framework for HTTP APIs
HUnit-Plus library: A test framework building on HUnit.
props library: Reusable quickcheck properties
quickcheck-regex library: Generate regex-constrained strings for QuickCheck
quickcheck-relaxng library: Generate RelaxNG-constrained XML documents for QuickCheck
serial-test-generators library: Test your 'Aeson' 'Serialize' and 'Binary' instances for stability over time
tasty-groundhog-converters library: Tasty Tests for groundhog converters

Testing

AC-MiniTest library: A simple test framework.
Agata library: Generator-generator for QuickCheck
arion program: Watcher and runner for Hspec
arith-encode library: A practical arithmetic encoding (aka Godel numbering) library.
ArrowVHDL library: A library to generate Netlist code from Arrow descriptions.
assertions library: A simple testing framework.
barecheck library: QuickCheck implementations for common types
bdd library: Behavior-Driven Development DSL
benchmark-function library: Test the time it takes to run a haskell function
benchpress library: Micro-benchmarking with detailed statistics.
buildbox library: Rehackable components for writing buildbots and test harnesses.
buildbox-tools program: Tools for working with buildbox benchmark result files.
cabal-test program: Automated test tool for cabal projects.
cabal-test-bin library and program: A program for finding temporary build file during cabal-test.
cabal-test-compat library: Compatibility interface of cabal test-suite.
cabal-test-quickcheck library: QuickCheck for Cabal
ChasingBottoms library: For testing partial and infinite values.
checkers library: Check properties on standard classes and data structures.
chell library: A simple and intuitive library for automated testing.
chell-hunit library: HUnit support for the Chell testing library
chell-quickcheck library: QuickCheck support for the Chell testing library
chronograph library: measure timings of data evaluation
clash-prelude-quickcheck library: QuickCheck instances for various types in the CλaSH Prelude
ClassLaws library: Stating and checking laws for type class methods
complexity library: Empirical algorithmic complexity
criterion library and program: Robust, reliable performance measurement and analysis
darcs-benchmark program: Comparative benchmark suite for darcs.
data-pprint library: Prettyprint and compare Data values
data-size library: Profiling of data structures
directory-layout library: Directory layout DSL
DMuCheck programs: Distributed Mutation Analysis framework for MuCheck
DocTest program: Test interactive Haskell examples
doctest library and program: Test interactive Haskell examples
doctest-discover library and program: Easy way to run doctests via cabal
doctest-discover-configurator library and program: Easy way to run doctests via cabal (no aeson dependency, uses configurator instead)
doctest-prop library: Allow QuickCheck-style property testing within doctest.
dpor library: ...
enumeration library: A practical API for building recursive enumeration procedures and enumerating datatypes.
faker library: Pure Haskell library for generating fake data
fgl-arbitrary library: QuickCheck support for fgl
fuzzcheck library: A simple checker for stress testing monadic code
gdiff-th library: Generate gdiff GADTs and Instances.
gencheck library: A testing framework inspired by QuickCheck and SmallCheck
GenSmsPdu program: Automatic SMS message generator
ghc-prof-flamegraph library and program: Generates data to be used with flamegraph.pl from .prof files.
hackager program: Hackage testing tool
hcltest library: A testing library for command line applications.
hdbi-tests library: test suite for testing HDBI
hspec library: A Testing Framework for Haskell
hspec-attoparsec library: Utility functions for testing your attoparsec parsers with hspec
hspec-checkers library: Allows to use checkers properties from hspec
hspec-contrib library: Contributed functionality for Hspec
hspec-core library: A Testing Framework for Haskell
hspec-discover library and program: Automatically discover and run Hspec tests
hspec-expectations library: Catchy combinators for HUnit
hspec-expectations-lens library: Hspec expectations for the lens stuff
hspec-expectations-lifted library: A version of hspec-expectations generalized to MonadIO
hspec-expectations-pretty library: hspec-expectations with pretty printing on failure
hspec-expectations-pretty-diff library: Catchy combinators for HUnit
hspec-experimental library: An experimental DSL for testing on top of Hspec
hspec-jenkins library: Jenkins-friendly XML formatter for Hspec
hspec-laws library: Document and test laws for standard type classes
hspec-megaparsec library: Utility functions for testing Megaparsec parsers with Hspec
hspec-meta library and program: A version of Hspec which is used to test Hspec itself
hspec-server library: Test Framework for checking server's status
hspec-shouldbe library: Convenience wrapper and utilities for hspec
hspec-slow library: Find slow test cases
hspec-smallcheck library: SmallCheck support for the Hspec testing framework
hspec-test-framework library: Run test-framework tests with Hspec
hspec-test-framework-th library: Run test-framework tests with Hspec
hspec-test-sandbox library: Hspec convenience functions for use with test-sandbox
hspec-wai library: Experimental Hspec support for testing WAI applications
hspec-wai-json library: Testing JSON APIs with hspec-wai
hspec2 library: Alpha version of Hspec 2.0
hstest program: Runs tests via QuickCheck1 and HUnit; like quickCheck-script but uses GHC api
HTF library and program: The Haskell Test Framework
HUnit library: A unit testing framework for Haskell
HUnit-approx library: Approximate equality for floating point numbers with HUnit
hunit-dejafu library: Deja Fu support for the HUnit test framework.
HUnit-Diff library: Assertions for HUnit with difference reporting
hunit-gui library and program: A GUI testrunner for HUnit
hunit-parsec library: An HUnit Testable instance for Parsec parser unit tests.
HUnit-Plus library: A test framework building on HUnit.
hunit-rematch library: HUnit support for rematch
inspection-proxy program: A simple proxy for debugging plaintext protocols communication
IOSpec library: A pure specification of the IO monad.
ivory-eval library: Simple concrete evaluator for Ivory programs
ivory-quickcheck library: QuickCheck driver for Ivory.
json-assertions library: Test that your (Aeson) JSON encoding matches your expectations
keiretsu program: Multi-process orchestration for development and integration testing
KSP library: A library with the kerbal space program universe and demo code
lazysmallcheck library: A library for demand-driven testing of Haskell programs
leaky program: Robust space leak, and its strictification
leancheck library: Cholesterol-free property-based testing
lipsum-gen library: Generators for random sequences of English-like nonsense text.
mockery library: Support functions for automated testing
MuCheck library: Automated Mutation Testing
MuCheck-Hspec library and program: Automated Mutation Testing for Hspec tests
MuCheck-HUnit library and program: Automated Mutation Testing for HUnit tests
MuCheck-QuickCheck library and program: Automated Mutation Testing for QuickCheck tests
MuCheck-SmallCheck library and program: Automated Mutation Testing for SmallCheck tests
mudbath program: Continuous deployment server for use with GitHub
nanospec library: A lightweight implementation of a subset of Hspec's API
pqc library: Parallel batch driver for QuickCheck
proctest library and program: An IO library for testing interactive command line programs
properties library: check quickCheck properties in real time.
qc-oi-testgenerator library: Compile time generation of operation invariance tests for QuickCheck
quick-generator library: Generator random test data for QuickCheck
QuickCheck library: Automatic testing of Haskell programs
quickcheck-assertions library: HUnit like assertions for QuickCheck
quickcheck-combinators library: Simple type-level combinators for augmenting QuickCheck instances.
QuickCheck-GenT library: A GenT monad transformer for QuickCheck library.
quickcheck-instances library: Common quickcheck instances
quickcheck-io library: Use HUnit assertions as QuickCheck properties
quickcheck-poly library: Automating QuickCheck for polymorphic and overlaoded properties
quickcheck-properties library: QuickCheck properties for standard type classes.
quickcheck-property-comb library: Combinators for Quickcheck Property construction and diagnostics
quickcheck-property-monad library: A monad for generating QuickCheck properties without Arbitrary instances.
quickcheck-rematch library: QuickCheck support for rematch
QuickCheck-safe library: Safe reimplementation of QuickCheck's core
quickcheck-script program: Automated test tool for QuickCheck.
quickcheck-simple library: Test properties and default-mains for QuickCheck
quickcheck-unicode library: Generator and shrink functions for testing Unicode-related software.
quickcheck-webdriver library: Utilities for using WebDriver with QuickCheck
quickpull library and programs: Generate Main module with QuickCheck tests
quickspec library: Equational laws for free!
quicktest program: A reflective batch tester for Haskell.
SBench library: A benchmark suite for runtime and heap measurements over a series of inputs.
selenium-server library: Run the selenium standalone server for usage with webdriver
shadower program: An automated way to run doctests in files that are changing
shelltestrunner program: A tool for testing command-line programs.
should-not-typecheck library: A HUnit/hspec assertion library to verify that an expression does not typecheck
silently library: Prevent or capture writing to stdout and other handles.
sloth library: Testing for minimal strictness
smallcheck library: A property-based testing library
smallcheck-laws library: SmallCheck properties for common laws
smallcheck-lens library: SmallCheck properties for lens
smallcheck-series library: Extra SmallCheck series and utilities
smartcheck library and program: A smarter QuickCheck.
sparsecheck library: A Logic Programming Library for Test-Data Generation
spoonutil library and program: Spoon's utilities. Simple testing and nice looking error reporting.
StrictBench library: Benchmarking code through strict evaluation
stringbuilder library: A writer monad for multi-line string literals
sunlight library: Test Cabalized package against multiple dependency versions
system-test program: Runs system tests of applications.
target library and program: Generate test-suites from refinement types.
tasty library: Modern and extensible testing framework
tasty-ant-xml library: Render tasty output to XML for Jenkins
tasty-dejafu library: Deja Fu support for the Tasty test framework.
tasty-expected-failure library: Mark tasty tests as failure expected
tasty-golden library: Golden tests support for tasty
tasty-hspec library: Hspec support for the Tasty test framework.
tasty-html library: Render tasty output to HTML
tasty-hunit library: HUnit support for the Tasty test framework.
tasty-hunit-adapter library: Use existing HUnit tests with tasty
tasty-integrate programs: automated integration of QuickCheck properties into tasty suites
tasty-laws library: Test common laws
tasty-lens library: Tasty TestTrees for Lens validation
tasty-program library: Use tasty framework to test whether a program executes correctly
tasty-quickcheck library: QuickCheck support for the Tasty test framework.
tasty-rerun library: Run tests by filtering the test tree depending on the result of previous test runs
tasty-silver library: A fancy test runner, including support for golden tests.
tasty-smallcheck library: SmallCheck support for the Tasty test framework.
tasty-tap library: TAP (Test Anything Protocol) Version 13 formatter for tasty
tasty-th library: Automatic tasty test case discovery using TH
TBC library and program: Testing By Convention
tdd-util library: Test framework wrapper
test-framework library and program: Framework for running and organising tests, with HUnit and QuickCheck support
test-framework-doctest library: Test.Framework wrapper for DocTest
test-framework-golden library: Golden tests support for test-framework
test-framework-hunit library: HUnit support for the test-framework package.
test-framework-program library: Test framework support for running simple test programs.
test-framework-quickcheck library: QuickCheck support for the test-framework package.
test-framework-quickcheck2 library: QuickCheck2 support for the test-framework package.
test-framework-sandbox library: test-sandbox support for the test-framework package
test-framework-skip library: Functions for conveniently marking some of the tests in a suite as being skipped.
test-framework-smallcheck library: Support for SmallCheck tests in test-framework
test-framework-testing-feat library: A test framework provider for testing-feat
test-framework-th library: Automagically generate the HUnit- and Quickcheck-bulk-code using Template Haskell.
test-framework-th-prime library: Template Haskell for test framework
test-invariant library: Provide common invariants to be checked with QuickCheck
test-sandbox library: Sandbox for system tests
test-sandbox-compose library and program: Lightweight development enviroments using test-sandbox
test-sandbox-hunit library: HUnit convenience functions for use with test-sandbox
test-sandbox-quickcheck library: QuickCheck convenience functions for use with test-sandbox
test-shouldbe library: Catchy combinators for HUnit
test-simple library: Simple Perl inspired testing
TestExplode library: Generates testcases from program-snippets
testing-feat library: Functional Enumeration of Algebraic Types
testing-type-modifiers library: Data type modifiers for property based testing
testloop library: Quick feedback loop for test suites
testpack library: Test Utililty Pack for HUnit and QuickCheck (unmaintained)
testrunner library: Easy unit test driver framework
timeconsole program: Time commands by lines of STDOUT
torch library: Simple unit test library (or framework)
wai-test library: Unit test framework (built on HUnit) for WAI applications. (deprecated)
webdriver library: a Haskell client for the Selenium WebDriver protocol
webdriver-snoy library: a Haskell client for the Selenium WebDriver protocol (deprecated)
yesod-test library: integration testing for WAI/Yesod Applications

Testing-hackage

test-pkg library: Just tests Hackage

Text

acme-left-pad library: free your haskell from the tyranny of npm!
aeson library: Fast JSON parsing and encoding
aeson-better-errors library: Better error messages when decoding JSON values.
aeson-filthy library: Several newtypes and combinators for dealing with less-than-cleanly JSON input.
aeson-flatten library: JSON flatten for Aeson
aeson-native library: Fast JSON parsing and encoding (deprecated)
aeson-parsec-picky library: Alternative JSON parser based on Parsec and Aeson
aeson-prefix library: Hiearchical prefixing for aeson
aeson-pretty library and program: JSON pretty-printing library and command-line tool.
aeson-toolkit library: A generalization of Aeson over Failure
AhoCorasick library: Aho-Corasick string matching algorithm
align-text program: A simple unix filter to align text on specified substrings
animalcase library: Convert camelCase to snake_case and vice versa
annotated-wl-pprint library: The Wadler/Leijen Pretty Printer, with annotation support
ansi-wl-pprint library and program: The Wadler/Leijen Pretty Printer for colored ANSI terminal output
api-opentheory-unicode library: OpenTheory unicode character API
arff library: Generate Attribute-Relation File Format (ARFF) files
arpa library and program: Library for reading ARPA n-gram models
arx library and program: Archive execution tool.
ascetic library: Generic markup builder.
asciidiagram library and program: Pretty rendering of Ascii diagram into svg or png.
atto-lisp library: Efficient parsing and serialisation of S-Expressions.
AttoJson library: Simple lightweight JSON parser, generator & manipulator based on ByteString
attoparsec library: Fast combinator parsing for bytestrings and text
attoparsec-arff library: An ARFF file parser using Attoparsec
attoparsec-csv library: A parser for CSV files that uses Attoparsec
attoparsec-enumerator library: Pass input from an enumerator to an Attoparsec parser.
attoparsec-expr library: Port of parsec's expression parser to attoparsec.
attoparsec-text library: (deprecated)
attoparsec-text-enumerator library: (deprecated)
augur program: Renaming media collections in a breeze.
authoring library: A library for writing papers
beautifHOL program: A pretty-printer for higher-order logic
bencode library: Parser and printer for bencoded data.
betacode library: A codec for beta code (http://en.wikipedia.org/wiki/Beta_Code).
bibdb program: A database based bibliography manager for BibTeX
bibtex library and programs: Parse, format and processing BibTeX files
blaze-from-html program: Tool to convert HTML to BlazeHtml code.
blaze-html library: A blazingly fast HTML combinator library for Haskell
blaze-html-hexpat library: A hexpat backend for blaze-html.
blaze-html-truncate library: A truncator for blaze-html
blaze-json library: tiny library for encoding json
blaze-markup library: A blazingly fast markup combinator library for Haskell
blaze-textual library: Fast rendering of common datatypes
blaze-textual-native library: Fast rendering of common datatypes (deprecated)
BluePrintCSS library: Html document layout library.
Bookshelf program: A simple document organizer with some wiki functionality
boomerang library: Library for invertible parsing and printing
boxes library: 2D text pretty-printing library
Bravo library: Static text template generation library
bytestring-nums library and program: Parse numeric literals from ByteStrings.
bytestring-short library: Backport copy of ShortByteString
bytestring-show library: Efficient conversion of values into readable byte strings.
bytestringparser library: Combinator parsing with Data.ByteString.Lazy
bytestringparser-temporary library: Combinator parsing with Data.ByteString.Lazy
bytestringreadp library: A ReadP style parser library for ByteString
case-conversion library: Convert between different cases
case-insensitive library: Case insensitive string comparison
cased library: Track string casing in its type
cases library: A converter for spinal, snake and camel cases
casing library: Convert between various source code casing conventions
cassava library: A CSV parsing and encoding library
cassava-streams library and program: io-streams interface for the cassava CSV library.
cassette library: A combinator library for simultaneously defining parsers and pretty printers.
category-printf library: Highbrow approach to type-safe printf format specifications.
cedict library and program: Convenient Chinese phrase & character lookup.
cereal-enumerator library: Deserialize things with cereal and enumerator
change-monger library and program: Parse VCS changelogs into ChangeLogs
charsetdetect library: Character set detection using Mozilla's Universal Character Set Detector
charsetdetect-ae library: Character set detection using Mozilla's Universal Character Set Detector
chatty library: Some monad transformers and typeclasses for abstraction of global dependencies.
chatty-text library: Provides some classes and types for dealing with text, using the fundaments of Chatty.
cheapskate library and programs: Experimental markdown processor.
cheapskate-highlight library: Code highlighting for cheapskate
chunks library: Simple template library with static safety
cirru-parser library: Cirru Parser in Haskell
CirruParser library: Cirru Parser in Haskell
citation-resolve library: convert document IDs such as DOI, ISBN, arXiv ID to bibliographic reference.
citeproc-hs library: A Citation Style Language implementation in Haskell
citeproc-hs-pandoc-filter program: A Pandoc filter for processing bibliographic references with citeproc-hs
cjk library: Data about Chinese, Japanese and Korean characters and languages
cld2 library: Haskell bindings to Google's Compact Language Detector 2
cless program: Colorized LESS
clevercss library and program: A CSS preprocessor
clippings library and program: A parser/generator for Kindle-format clipping files (`My Clippings.txt`),
clogparse library: Parse IRC logs such as the #haskell logs on tunes.org
cmark library: Fast, accurate CommonMark (Markdown) parser and renderer
commander library and program: pattern matching against string based commands
Condor library and program: Information retrieval library
condor library and program: Information retrieval library
conduit-iconv library: Conduit for character encoding conversion.
conduit-parse library: Parsing framework based on conduit.
container library: Containers abstraction and utilities.
crc16-table library: Compute CRC16 checksums using a lookup table.
cron library: Cron datatypes and Attoparsec parser
cron-compat library: Cron datatypes and Attoparsec parser
csv library: CSV loader and dumper
csv-conduit library and program: A flexible, fast, conduit-based CSV parser library for Haskell.
csv-nptools programs: A collection of CSV tools
csv-to-qif program: A small program that will read csv files and create qif files
ctemplate library: Binding to the Google ctemplate library
ctkl library: packaging of Manuel Chakravarty's CTK Light for Hackage
ctpl library and programs: A programming language for text modification.
damnpacket library: Parsing dAmn packets
data-base library: ...
data-construction library: Data construction abstractions including Constructor, Destructor, Maker, ...
data-layer library: Data layering utilities. Layer is a data-type which wrapps other one, ...
data-object-json library: Serialize JSON data to/from Haskell using the data-object library. (deprecated)
data-pprint library: Prettyprint and compare Data values
data-repr library: Alternative to Show data printing utility.
data-result library: Data types for returning results distinguishable by types.
data-rtuple library: ...
data-textual library: Human-friendly textual representations.
decode-utf8 program: Decode a UTF-8 byte stream on standard input
derp-lib library: combinators based on parsing with derivatives (derp) package
detrospector program: Markov chain text generator
diagrams-pandoc library and program: A Pandoc filter to express diagrams inline using the Haskell EDSL _Diagrams_
directory-listing-webpage-parser library: directory listing webpage parser
discount library: Haskell bindings to the discount Markdown library.
domplate library: A simple templating library using HTML5 as its template language.
dotgen library and program: A simple interface for building .dot graph files.
double-conversion library: Fast conversion between double precision floating point and text
dtd library: Parse and render DTD files (deprecated)
dtd-text library: Parse and render XML DTDs
dtd-types library: Basic types for representing XML DTDs
dynamic-pp library: ...
easyjson library: Haskell JSON library with an emphasis on simplicity, minimal dependencies, ...
ebnf-bff library and program: Parser combinators & EBNF, BFFs!
ede library: Templating language with similar syntax and features to Liquid or Jinja2.
editor-open library and programs: Open the user's $VISUAL or $EDITOR for text input.
ehaskell program: like eruby, ehaskell is embedded haskell.
ehs library and program: Embedded haskell template using quasiquotes.
email-validate library: Validating an email address string against RFC 5322
Encode library and programs: Encoding character data
epub library and program: EPUB E-Book construction support library
epub-metadata library: Library for parsing epub document metadata
eros library: A text censorship library.
eros-client program: DEPRECATED in favor of eros-http
eros-http program: JSON HTTP interface to Eros.
ert library and program: Easy Runtime Templates
expand library: Extensible Pandoc
expat-enumerator library: Enumerator-based API for Expat
expression-parser library: Generalization of parsec's expression parser.
fastedit library: find nearest neighbours by edit-distance
fay-text library: Fay Text type represented as JavaScript strings
feed library: Interfacing with RSS (v 0.9x, 2.x, 1.0) + Atom feeds.
feed-cli program: A simple command line interface for creating and updating feeds like RSS
feed-crawl library: Utility for fetching feeds with redirect info and HTML link detection
fix-symbols-gitit library: Gitit plugin: Turn some Haskell symbols into pretty math symbols.
fixedwidth-hs library and program: Quick parsing of fixed-width data formats.
fixhs library and program: FIX (co)parser
flamethrower library: A template engine for HTML
flat-tex program: flatten a latex multi-file latex document
Flippi program: Wiki
floatshow library: Alternative faster String representations for Double and Float, ...
FontyFruity library: A true type file format loader
forger library and program: Library for generating fake placeholder data
format library: Rendering from and scanning to format strings
formattable library: Business-quality formatting of numbers, dates, and other things
formatting library: Combinator-based type-safe formatting (like printf() or FORMAT)
formlets library: Formlets implemented in Haskell
formlets-hsp library: HSP support for Formlets
frisby library: Linear time composable parser for PEG grammars
frquotes library and program: Lexical extension for Quasi-Quotations using French-Quotes
full-text-search library and program: In-memory full text search engine
functor-utils library: Collection of functor utilities, providing handy operators, like generalization of (.).
fuzzy library: Filters a list based on a fuzzy string search.
generic-pretty library: Pretty printing for Generic value
GenericPretty library: A generic, derivable, haskell pretty printer.
gentlemark library: Gentle markup language
GGg program: GGg cipher
ginger library and program: An implementation of the Jinja2 template language in Haskell
glider-nlp library: Natural Language Processing library
gnuidn library: Bindings for GNU IDN
google-search library: EDSL for Google and GMail search expressions
googlepolyline library: Google Polyline Encoder/Decoder
graphtype program: A simple tool to illustrate dependencies between Haskell types
groom library: Pretty printing for well-behaved Show instances.
hack-contrib-press library: Hack helper that renders Press templates
haiji library: A typed template engine, subset of jinja2
hako library: A mako-like quasi-quoter template library
halipeto library: Haskell Static Web Page Generator
HandsomeSoup library and program: Work with HTML more easily in HXT
haphviz library: Graphviz code generation with Haskell
hastache library and program: Haskell implementation of Mustache templates
hastache-aeson library: render hastache templates using aeson values
HaTeX-meta program: This package is deprecated. From version 3, HaTeX does not need this anymore.
HaTeX-qq library: Quasiquoters for HaTeX
HaXml library and programs: Utilities for manipulating XML documents
Hayoo programs: The Hayoo! search engine for Haskell API search on hackage
hdiscount library: Haskell bindings to the Discount markdown library
hello program: Hello World, an example package
heredoc library: multi-line string / here document using QuasiQuotes
heredocs library: heredocument
hexdump library: A library for forming hexdumps.
hformat library: Simple Haskell formatting
hgettext library and program: Bindings to libintl.h (gettext, bindtextdomain)
highjson library: Very fast JSON serialisation and parsing library
highlighter library and program: source code highlighting
highlighter2 library and program: source code highlighting
highlighting-kate library and program: Syntax highlighting
hjpath library: XPath-like syntax for querying JSON
hjson library: JSON parsing library
hjson-query library: library for querying from JSON
hlatex library and program: A library to build valid LaTeX files
hmark library and program: A tool and library for Markov chains based text generation.
Holumbus-Searchengine library: A search and indexing engine.
hoodle-builder library: text builder for hoodle file format
hoodle-parser library: Hoodle file parser
HPath library and program: Extract Haskell declarations by name.
hprotoc library and program: Parse Google Protocol Buffer specifications
hprotoc-fork library and program: Parse Google Protocol Buffer specifications
hpygments library: Highlight source code using Pygments
hpyrg program: pyrg utility done right
hs-bibutils library: Haskell bindings to bibutils, the bibliography conversion utilities.
hs-vcard library: Implements the RFC 2426 vCard 3.0 spec
hsass library: Integrating Sass into Haskell applications.
HsHyperEstraier library: HyperEstraier binding for Haskell
HSmarty library: Small template engine
HsSyck library: Fast, lightweight YAML loader and dumper
hstidy program: Takes haskell source on stdin, parses it, then prettyprints it to stdout.
HStringTemplate library: StringTemplate implementation in Haskell.
HStringTemplateHelpers library: Convenience functions and instances for HStringTemplate
html-conduit library: Parse HTML documents using xml-conduit datatypes.
html-email-validate library: Validating an email address against HTML standard
html-minimalist library: Minimalist haskell html library
html-parse library: A high-performance HTML tokenizer
html-rules library: Perform traversals of HTML structures using sets of rules.
html-truncate library: A HTML truncator
html2hamlet program: HTML to Hamlet converter
html5-entity library and program: A library for looking up and validating HTML5 entities.
htoml library and program: Parser for TOML files
hunt-searchengine library: A search and indexing engine.
hunt-server program: A search and indexing engine server.
hxt-charproperties library: Character properties and classes for XML and Unicode
hxt-regex-xmlschema library: A regular expression library for W3C XML Schema regular expressions
hxt-unicode library: Unicode en-/decoding functions for utf8, iso-latin-* and other encodings
hyphenate library: Text hyphenation algorithm
hyphenation library: Configurable Knuth-Liang hyphenation
i18n library: Internationalization for Haskell
iCalendar library: iCalendar data types, parser, and printer.
iconv library: String encoding conversion
idiii library and program: ID3v2 (tagging standard for MP3 files) library
idna library: Implements IDNA (RFC 3490).
illuminate library and program: A fast syntax highlighting library built with alex.
imbib programs: Minimalistic reference manager.
imparse library and program: Multi-platform parser analyzer and generator.
indentparser library and program: A parser for indentation based structures
indents library: indentation sensitive parser-combinators for parsec
inflections library: Inflections library for Haskell
inject library and program: A minimalistic template engine
inserts library: Stupid simple bytestring templates.
interpolate library: String interpolation done right
Interpolation library: Multiline strings, interpolation and templating.
Interpolation-maxs library: Multiline strings, interpolation and templating.
invertible-syntax library: Invertible syntax descriptions for both parsing and pretty printing.
ipprint library: Tiny helper for pretty-printing values in ghci console
iptables-helpers library and program: iptables rules parser/printer library
irc-colors library: Colourize your IRC strings
json-b library and program: JSON parser that uses byte strings.
json-litobj library: Extends Text.JSON to handle literal JS objects.
json-stream library: Incremental applicative JSON parser
json-tools programs: A collection of JSON tools
json-types library: Basic types for representing JSON
json2 library: Library provides support for JSON.
json2-types library: Defined JSON data types and function for renders JSON to string.
JSONb library and program: JSON parser that uses byte strings.
jsonresume library: Parser and datatypes for the JSON Resume format
jsonschema-gen library: JSON Schema generator from Algebraic data type
jsonsql program: Interpolate JSON object values into SQL strings
jsontsv program: JSON to TSV transformer
jspath library: Extract substructures from JSON by following a path.
JustParse library: A simple and comprehensive Haskell parsing library
karver library: A simple template engine, inspired by jinja2
katip library: A structured logging framework.
kickass-torrents-dump-parser library: Parses kat.ph torrent dumps
koellner-phonetic library: "map German words to code representing pronunciation"
Konf library: A configuration language and a parser.
lambda-options library: A modern command-line parser for Haskell.
lambdatex library: Type-Safe LaTeX EDSL
latex library: Parse, format and process LaTeX files
layout library: Turn values into pretty text or markup
layout-bootstrap library: Template and widgets for Bootstrap2 to use with Text.Blaze.Html5
lazy-csv library and program: Efficient lazy parsers for CSV (comma-separated values).
ldif library and programs: The LDAP Data Interchange Format (LDIF) tools
leetify program: Leetify text
lens-regex library and program: Lens powered regular expression
lens-text-encoding library: Isomorphisms and prisms for text <=> bytestring conversions
lens-utils library: Collection of missing lens utilities.
liboleg library: An evolving collection of Oleg Kiselyov's Haskell modules
libxml-enumerator library: Enumerator-based API for libXML's SAX interface
libxml-sax library: Bindings for the libXML2 SAX interface
libxslt library: Binding to libxslt
ligature library: Expand ligatures in unicode text
line-break program: Convert newlines in text
line2pdf library and program: Simple command-line utility to convert text into PDF
linebreak library: breaks strings to fit width
linguistic-ordinals library: Express Integral types as linguistic ordinals (1st, 2nd, 3rd, etc)
lipsum-gen library: Generators for random sequences of English-like nonsense text.
llvm-pretty library: A pretty printing library inspired by the llvm binding.
llvm-pretty-bc-parser library and program: LLVM bitcode parsing library
log2json library and program: Turn log file records into JSON.
logplex-parse library: Parse Heroku application/logplex documents
lorem library and program: Library for generating filler text
ltext library and program: Higher-order file applicator
luthor library: Tools for lexing and utilizing lexemes that integrate with Parsec.
maccatcher library and program: Obtain the host MAC address on *NIX and Windows.
magic library: Interface to C file/magic library
mainland-pretty library: Pretty printing designed for printing source code.
markdown-pap library: markdown parser with papillon
markdown2svg program: markdown to svg converter
marked-pretty library: Pretty-printing library, with scoping, based on pretty.
markup-preview program: A simple markup document preview (markdown, textile, reStructuredText)
marxup library and program: Markup language preprocessor for Haskell
mbox library: Read and write standard mailbox files.
mdcat library and program: Markdown viewer in your terminal
mediawiki2latex program: Convert MediaWiki text to LaTeX
metadata library: metadata library for semantic web
mime-directory library: A library for parsing/printing the text/directory mime type.
MoeDict library: Utilities working with MoeDict.tw JSON dataset
monoid-subclasses library: Subclasses of Monoid
MorseCode library: Morse code
mpppc library: Multi-dimensional parametric pretty-printer with color
mpretty library: a monadic, extensible pretty printing library
musicxml library: MusicXML format encoded as Haskell type and functions of reading and writting.
mustache-haskell library and program: Straight implementation of mustache templates
namelist library: fortran90 namelist parser/pretty printer
nanoparsec library: An implementation of attoparsec-like parser around list-like
naturalcomp library: Natural-order string comparison
NaturalSort programs: Natural sorting for strings
neat library and program: A Fast Retargetable Template Engine
nicify program: Pretty print the standard output of default `Show` instances.
nicify-lib library: Pretty print the standard output of default `Show` instances.
nme library: Bindings to the Nyctergatis Markup Engine
noise library and program: A friendly language for graphic design
nptools programs: A collection of random tools
numerals library: Convert numbers to number words
numerals-base library: Convert numbers to number words
omaketex program: A simple tool to generate OMakefile for latex files.
open-pandoc programs: Conversion between markup formats
opentheory-char library and program: Unicode characters
opentheory-unicode library: Unicode characters
opml library: Representing and handling OPML subscription information.
opml-conduit library: Streaming parser/renderer for the OPML 2.0 format.
oso2pdf programs: Better conversion of Oxford Scholarship Online material to PDF
ot library: Real-time collaborative editing with Operational Transformation
ottparse-pretty program: Pretty-printer for Ott parse trees
PageIO library and program: Page-oriented extraction and composition library
pager library and program: Open up a pager, like 'less' or 'more'
pandoc library and programs: Conversion between markup formats
pandoc-citeproc library and programs: Supports using pandoc with citeproc
pandoc-citeproc-preamble program: Insert a preamble before pandoc-citeproc's bibliography
pandoc-crossref library and program: Pandoc filter for cross-references
pandoc-csv2table library and program: Convert CSV to Pandoc Table Markdown
pandoc-include library and program: Include other Markdown files
pandoc-japanese-filters programs: Japanese-specific markup filters for pandoc.
pandoc-lens library: Lenses for Pandoc documents
pandoc-placetable program: Pandoc filter to include CSV files
pandoc-plantuml-diagrams library and program: Render and insert PlantUML diagrams with Pandoc
pandoc-types library: Types for representing a structured document
pappy program: Packrat parsing; linear-time parsers for grammars in TDPL.
para library: Text paragraph formatting
parcom-lib library: A simple parser-combinator library, a bit like Parsec but without the frills
parsec-parsers library: Parsing instances for Parsec
parseerror-eq library: Adds and Eq instance for Parsec's ParseError if needed
parsers library: Parsing combinators
patience library: Patience diff and longest increasing subsequence
pattern-arrows library: Arrows for Pretty Printing
PCLT library: Extension to Show: templating, catalogizing, languages, parameters, etc.
pcre-less library: Nicer interface to regex-pcre.
pcre-light library: Portable regex library for Perl 5 compatible regular expressions
pcre-light-extra library: pcre-light extra functionality
pcre-utils library: Perl-like substitute and split for PCRE regexps.
pdf2line programs: Simple command-line utility to convert PDF into text
pdfinfo library: Wrapper around the pdfinfo command.
period library and program: Parse and format date periods, collapse and expand their text representations.
phonetic-code library: Phonetic codes: Soundex and Phonix
picoparsec library: Fast combinator parsing for bytestrings and text
pipeclip program: Open your editor, pipe the output to the system clipboard
pipes-key-value-csv library: Streaming processing of CSV files preceded by key-value pairs.
pipes-text library: properly streaming text
plat library: Simple templating library
playlists library and program: Library and executable for working with playlist files.
polyparse library: A variety of alternative parser combinator libraries.
portable-lines library: Alternative 'lines' implementation that understands CR-LF and CR
press library: Text template library targeted at the web / HTML generation
prettify library: Haskell2010 structured text formatting
pretty library: Pretty-printing library
pretty-class library: Pretty printing class similar to Show.
pretty-compact library: Pretty-printing library
pretty-ncols library: A implementation of multi-column layout w/ Text.PrettyPrint
pretty-show library and program: Tools for working with derived `Show` instances and generic inspection of values.
prettyclass library: Pretty printing class similar to Show.
printf-mauke library: A Perl printf like formatter.
printf-safe library: Type safe interface for Text.Printf
protocol-buffers library: Parse Google Protocol Buffer specifications
protocol-buffers-descriptor library: ...
protocol-buffers-descriptor-fork library: ...
protocol-buffers-fork library: Parse Google Protocol Buffer specifications
pugixml library: pugixml binding.
pugs-hsregex library: Haskell PCRE binding
pugs-HsSyck library: Fast, lightweight YAML loader and dumper
punkt library: Multilingual unsupervised sentence tokenization with Punkt.
punycode library: Encode unicode strings to ascii forms according to RFC 3492
QuasiText library: A QuasiQuoter for Text.
quickcheck-text library: Alternative arbitrary instance for Text
quickcheck-unicode library: Generator and shrink functions for testing Unicode-related software.
Quickson library: Quick JSON extractions with Aeson
R-pandoc library and program: A pandoc filter to express R plots inside markdown
rainbox library: Two-dimensional box pretty printing, with colors
raw-strings-qq library: Raw string literals for Haskell.
rawstring-qm library: Simple raw string quotation and dictionary interpolation
razom-text-util library: Common text/parsing tools for Razom language packages.
read-bounded library: Class for reading bounded values
readable library: Reading from Text and ByteString
regex-applicative library: Regex-based parsing with applicative interface
regex-applicative-text library: regex-applicative on text
regex-base library: Replaces/Enhances Text.Regex
regex-compat library: Replaces/Enhances Text.Regex
regex-compat-tdfa library: Unicode Support version of Text.Regex, using regex-tdfa
regex-deriv library: ...
regex-dfa library: Replaces/Enhances Text.Regex
regex-genex library and program: From a regex, generate all possible strings it can match
regex-parsec library: Replaces/Enhances Text.Regex
regex-pcre library: Replaces/Enhances Text.Regex
regex-pcre-builtin library: Replaces/Enhances Text.Regex
regex-pderiv library: ...
regex-posix library: Replaces/Enhances Text.Regex
regex-posix-unittest program: Unit tests for the plaform's Posix regex library
regex-tdfa library: Replaces/Enhances Text.Regex
regex-tdfa-pipes library: Parse with regular expressions on Producers.
regex-tdfa-quasiquoter library: Quasi-quoter for TDFA (extended POSIX) regular expressions.
regex-tdfa-rc library: Replaces/Enhances Text.Regex
regex-tdfa-text library: Text interface for regex-tdfa
regex-tdfa-unittest program: Unit tests for the regex-tdfa
regex-tdfa-utf8 library: ...
regex-tre library: Replaces/Enhances Text.Regex
regex-xmlschema library: A regular expression library for W3C XML Schema regular expressions
regexchar library and program: A POSIX, extended regex-engine.
regexpr library: regular expression like Perl/Ruby in Haskell
regexpr-symbolic library: Regular expressions via symbolic manipulation
regexqq library: A quasiquoter for PCRE regexes.
relit library: Literal for regular expression
repr library: Render overloaded expressions to their textual representation.
repr-tree-syb library: Tree representation and pretty-printing of data structures based on SYB
rfc5051 library and program: Simple unicode collation as per RFC5051.
richreports library: Integrated pretty-printing and error/static analysis reporting.
RJson library: A reflective JSON serializer/parser.
roundtrip library: Bidirectional (de-)serialization
roundtrip-string library: Bidirectional (de-)serialization
roundtrip-xml library and program: Bidirectional (de-)serialization for XML.
rowrecord library: Build records from lists of strings, as from CSV files.
safe-printf library: Well-typed, flexible and variadic printf for Haskell
scholdoc library and programs: Converts ScholarlyMarkdown documents to HTML5/LaTeX/Docx format
scholdoc-citeproc library and programs: Scholdoc fork of pandoc-citeproc
scholdoc-texmath library and program: Scholdoc fork of texmath
scholdoc-types library: Scholdoc fork of pandoc-types
sci-ratio library: Rational numbers in scientific notation.
sdf2p1-parser library: A parser for SDF version 2.1 using Parsec
sext library: Lists, Texts and ByteStrings with type-encoded length
shell-escape library: Shell escaping library.
shortcut-links library: Link shortcuts for use in text markup
ShowF library: Show for * -> *
simple-config library: Simple config file parser generator
simple-tabular library: Simple tabular-text formatter
skypelogexport program: Export Skype chat logs to text files
smallcaps library and programs: Flatten camel case text in LaTeX files
snippet-extractor program: Extracts labeled snippets of code to files.
snowball library: Bindings to the Snowball library.
Snusmumrik programs: E-library directory based on FUSE virtual file system.
Sonnex library: Sonnex is an alternative to Soundex for french language
spelling-suggest library and programs: Spelling suggestion tool with library and command-line interfaces.
sphinx library: Haskell bindings to the Sphinx full-text searching daemon.
sphinx-cli program: Sphinx CLI and demo of Haskell Sphinx library
Spintax library: Random text generation based on spintax
splitter program: Use numerical ranges to split out certain lines from a file.
spreadsheet library and program: Read and write spreadsheets from and to CSV files in a lazy way
SpreadsheetML library: Write support for Excel's SpreadsheetML format
sssp library and program: HTTP proxy for S3.
ssv library and program: Comma-separated-value (CSV) read, show and write routines
stemmer library: Haskell bindings to the Snowball stemming library.
str library: A type class to abstract between many different string types.
StrappedTemplates library: General purpose templates in haskell
string-class library: String class library
string-conv library: Standardized conversion between string types
string-convert library: Provide universal string conversions between any two string-like types
stringable library: A Stringable type class, in the spirit of Foldable and Traversable
stringlike library: Transformations to several string-like types
strings library: Functions for working with strings, including Text, ByteString, etc.
stringsearch library: Fast searching, splitting and replacing of ByteStrings
subtitleParser library: A parser for .srt and .sub files
sundown library: Bindings to the sundown markdown library
table program: Simple tool to generate tables from DSV input
table-layout library and program: Layout text as grid or table.
Tablify program: Tool to render CSV into tables of various formats
tabular library: Two-dimensional data tables with rendering functions
taggy library and program: Efficient and simple HTML/XML parsing library
taggy-lens library: Lenses for the taggy html/xml parser
tamper library: Blaze-style HTML templates as a Monad Transformer.
tdoc library: TDoc is a typed document builder with support for (X)HTML
template library: Simple string substitution
template-yj library: Process template file
templater library: Simple string templater
termbox-bindings library and program: Bindings to the Termbox library
tex2txt library and program: LaTeX to plain-text conversion
texmath library and program: Conversion between formats used to represent mathematics.
text library: An efficient packed Unicode text type.
text-and-plots library: EDSL to create HTML documents with plots based on the C3.js library.
text-format library: Text formatting
text-format-simple library: Simple text formatting library.
text-icu library: Bindings to the ICU library
text-icu-translit library: ICU transliteration
text-latin1 library: Latin-1 (including ASCII) utility functions
text-ldap library and programs: Parser and Printer for LDAP text data stream
text-locale-encoding library: Encode and decode Text to/from ByteString using TextEncoding
text-manipulate library: Case conversion, word boundary manipulation, and textual subjugation.
text-position library: Handling positions in text and position-tagging it.
text-printer library: Abstract interface for text builders/printers.
text-regex-replace library: Easy replacement when using text-icu regexes.
text-region library: Provides functions to update text region positions according to text edit actions
text-render library: A type class for rendering objects as text, pretty-printing, etc.
text-show library: Efficient conversion of values into Text
text-show-instances library: Additional instances for text-show
text-stream-decode library: Streaming decoding functions for UTF encodings. (deprecated)
text-xml-qq library: Quasiquoter for xml. XML DSL in Haskell.
text-zipper library: A text editor zipper library
textual library: Textual type class for data that represent text
th-printf library: Compile-time printf
thimk programs: Command-line spelling word suggestion tool
timerep library: Parse and display time according to some RFCs (RFC3339, RFC2822, RFC822)
tinytemplate library: A tiny text templating library
titlecase library and program: Convert English words to title case
tn program: A simple daily journal program
transf library and program: Text transformer and interpreter.
translate library: Haskell binding to Google's AJAX Language API for Translation and Detection
trifecta library: A modern parser combinator library with convenient diagnostics
tsvsql program: Template tsv into SQL
twiml library: TwiML library for Haskell
twine library: very simple template language
txt2rtf program: Filter to convert plain text files to RTF
txtblk library: Deprecated in favor of eros.
type-cache library: ...
typelevel library: Useful type level operations (type families and related operators).
uhexdump program: hex dumper for UTF-8 text
unicode library and program: Construct and transform unicode characters
unicode-names library: Unicode 3.2.0 character names
unicode-normalization library: Unicode normalization using the ICU library
unicode-properties library: Unicode 3.2.0 character properties
unicode-show library: print and show in unicode
unicoder library and program: Make writing in unicode easy.
units-parser library: A parser for units of measure
unscramble program: Solve Boggle-like word games
upskirt library: Binding to upskirt
uri library: Library for working with URIs
uri-conduit library: Read and write URIs (deprecated)
uri-enumerator library: Read and write URIs (deprecated)
uri-enumerator-file library: uri-enumerator backend for the file scheme (deprecated)
URLb library: DEPRECATED A simple, liberal URL parser.
urldecode program: Decode percent-encoded strings.
UTFTConverter library and program: Processing popular picture formats into .c or .raw format in RGB565
uu-interleaved library: ...
uu-parsinglib library: Fast, online, error-correcting, monadic, applicative, merging, permuting, ...
uu-tc library: Haskell 98 parser combintors for INFOB3TC at Utrecht University
vcard library: A library for parsing/printing vCards from/to various formats.
verbalexpressions library: Regular expressions made easy
vorbiscomment library: Reading of Vorbis comments from Ogg Vorbis files
wavesurfer library: Parse WaveSurfer files
wcwidth library and program: Native wcwidth.
weighted-regexp library and programs: Weighted Regular Expression Matcher
whiskers library: Mustache templates with Template Haskell.
wikipedia4epub library and program: Wikipedia EPUB E-Book construction from Firefox history.
wl-pprint library: The Wadler/Leijen Pretty Printer
wl-pprint-ansiterm library: ANSI Terminal support with wl-pprint-extras
wl-pprint-extras library: A free monad based on the Wadler/Leijen pretty printer
wl-pprint-terminfo library: A color pretty printer with terminfo support
wl-pprint-text library: A Wadler/Leijen Pretty Printer for Text values
Wordlint library and program: Plaintext prose redundancy linter.
WordNet library: Haskell interface to the WordNet database
WordNet-ghc74 library: Haskell interface to the WordNet database
wybor library: Console line fuzzy search
xformat library: Extensible, type-safe formatting with scanf- and printf-like functions
xhaskell-library library: Replaces/Enhances Text.Regex
xhtml-combinators library: Fast and easy to use XHTML combinators.
xkbcommon library: Haskell bindings for libxkbcommon
xml library: A simple XML library.
xml-catalog library: Parse XML catalog files (deprecated)
xml-conduit-parse library: Streaming XML parser based on conduits.
xml-conduit-writer library: Warm and fuzzy creation of XML documents.
xml-hamlet library: Hamlet-style quasiquoter for XML content
xml-helpers library: Some useful helper functions for the xml library.
xml-monad library: Monadic extensions to the xml package.
xml-prettify library and program: Pretty print XML.
xml-types library: Basic types for representing XML
xml2json library and program: translate xml to json
xmlgen library: Fast XML generation library
xmlhtml library: XML parser and renderer with HTML 5 quirks mode
xournal-builder library: text builder for xournal file format
xournal-parser library: Xournal file parser
XSaiga library and program: An implementation of a polynomial-time top-down parser suitable for NLP
yajl-enumerator library: Enumerator-based interface to YAJL, an event-based JSON implementation
YamlReference library and program: YAML reference implementation
yate library: Yet Another Template Engine
yeganesh programs: small dmenu wrapper
Yocto library: A Minimal JSON Parser & Printer for Haskell
yocto library: A Minimal JSON Parser & Printer for Haskell
yst program: Builds a static website from templates and data in YAML or CSV files.
yuuko library and program: A transcendental HTML parser gently wrapping the HXT library
zampolit program: A tool for checking how much work is done on group projects.
zenc library: GHC style name Z-encoding and Z-decoding
Zwaluw library: Combinators for bidirectional URL routing

Text Recognition

antigate library: Interface for antigate.com captcha recognition API

Text.PrettyPrint

FPretty library: Efficient simple pretty printing combinators

TH

THEff library: TH implementation of effects.

Theorem Provers

atp-haskell library: Translation from Ocaml to Haskell of John Harrison's ATP code
bindings-yices library: Bindings to the Yices theorem prover
dedukti library and programs: A type-checker for the λΠ-modulo calculus.
Folly library and programs: A first order logic library in Haskell
haskhol-core library: The core logical system of HaskHOL, an EDSL for HOL theorem proving.
hgen program: Random generation of modal and hybrid logic formulas
HTab program: Tableau based theorem prover for hybrid logics
hylolib library: Tools for hybrid logics related programs
hylotab program: Tableau based theorem prover for hybrid logics
hyloutils programs: Very small programs for hybrid logics
ivor library: Theorem proving library based on dependent type theory
logic-classes library: Framework for propositional and first order logic, theorem proving
logic-TPTP library: Import, export etc. for TPTP, a syntax for first-order logic
mprover program: Simple equational reasoning for a Haskell-ish language
pesca program: Proof Editor for Sequent Calculus
qed library: Simple prover
sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.
sbvPlugin library: Formally prove properties of Haskell programs using SBV/SMT
scyther-proof program: Automatic generation of Isabelle/HOL correctness proofs for security protocols.
smtlib2 library: A type-safe interface to communicate with an SMT solver.
structural-induction library: Instantiate structural induction schemas for algebraic data types
tableaux program: An interactive theorem prover based on semantic tableaux
tamarin-prover program: The Tamarin prover for security protocol analysis.
tamarin-prover-term library: Term manipulation library for the tamarin prover.
tamarin-prover-theory library: Term manipulation library for the tamarin prover.
tamarin-prover-utils library: Utility library for the tamarin prover.
theoremquest library: A common library for TheoremQuest, a theorem proving game.
theoremquest-client program: A simple client for the TheoremQuest theorem proving game.
tip-haskell-frontend library and program: Convert from Haskell to Tip
tip-lib library and program: tons of inductive problems - support library and tools
toysolver library and programs: Assorted decision procedures for SAT, Max-SAT, PB, MIP, etc
twee library and program: An equational theorem prover
yices-easy library: Simple interface to the Yices SMT (SAT modulo theories) solver.
yices-painless library: An embedded language for programming the Yices SMT solver
z3 library and program: Bindings for the Z3 Theorem Prover
zeno program: An automated proof system for Haskell programs

Time

bank-holiday-usa library: A library for determining US bank holidays
ebeats library: Time in ebeats
herf-time library: haskell time manipulation in a 'kerf like' style.
hourglass library: simple performant time related library
hourglass-fuzzy-parsing library: A small library for parsing more human friendly date/time formats.
human-readable-duration library: Provide duration helper
iso8601-time library: Convert to/from the ISO 8601 time format
ntp-control library: Client library for NTP control messaging
rdtsc-enolan library: Binding to sources of high-efficiency, high-precision, ...
rfc3339 library: Parse and display time according to RFC3339 (deprecated)
tiempo library: Specify time intervals in different units (secs, mins, hours, etc.)
time-cache library: Cache current time and formatted time text
time-exts library and program: Efficient Timestamps
time-http library: Parse and format HTTP/1.1 Date and Time strings
time-patterns library: Patterns for recurring events.
time-qq library: Quasi-quoter for UTCTime times
timemap library and program: A mutable hashmap, implicitly indexed by UTCTime.
timerep library: Parse and display time according to some RFCs (RFC3339, RFC2822, RFC822)
utc library: A pragmatic time and date library.

Tools

cabal-db program: query tools for the local cabal database
camfort library and program: CamFort - Cambridge Fortran infrastructure
crackNum library and program: Crack various integer, floating-point data formats
fswatcher program: Watch a file/directory and run a command when it's modified
g-npm program: Generate Gentoo ebuilds from NodeJS/npm packages.
garepinoh library and programs: reverse prefix notation calculator and calculation library
ghc-man-completion program: Generate a bash completion from the GHC manpage
gitcache program: Simple git utility to use and manage clone cache
gsmenu program: A visual generic menu
gt-tools programs: Console and GUI interface for Google Translate service
hascal library and program: A minimalistic but extensible and precise calculator
homplexity program: Haskell code quality tool
iptadmin program: web-interface for iptables
json-autotype library and program: Automatic type declaration for JSON input data
json-tools programs: A collection of JSON tools
log2json library and program: Turn log file records into JSON.
ltext library and program: Higher-order file applicator
nemesis library: a task management tool for Haskell
newt library and programs: A trivially simple app to create things from simple templates.
nicify program: Pretty print the standard output of default `Show` instances.
nicify-lib library: Pretty print the standard output of default `Show` instances.
pit library and program: Account management tool.
recursive-line-count program: Count lines in files and display them hierarchically
reheat program: to make notes and reduce impact on idle time on writing other programms.
RollingDirectory program: Limits the size of a directory's contents
teleport library and program: A tool to quickly switch between directories
wordpass library and program: Dictionary-based password generator

Topology

search library: Infinite search in finite time with Hilbert's epsilon

Trace

edentv program: A Tool to Visualize Parallel Functional Program Executions
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-events-analyze program: Analyze and visualize event logs
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC
Hoed library and programs: Lightweight algorithmic debugging.
hood library: Debugging by observing in place
hood-off library: Dummy package to disable Hood without having to remove all the calls to observe
hood2 library: Debugging by observing in place
hpc-strobe library: Hpc-generated strobes for a running Haskell program
hpc-tracer program: Tracer with AJAX interface
linux-perf library and programs: Read files generated by perf on Linux
threadscope program: A graphical tool for profiling parallel Haskell programs.

Training

io-manager library and program: Skeleton library around the IO monad.

Trans

Tainted library: Tainted type, and associated operations

Transformation

hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel
hermit-syb library: HERMIT plugin for optimizing Scrap-Your-Boilerplate traversals.
html-rules library: Perform traversals of HTML structures using sets of rules.

Tree

repr-tree-syb library: Tree representation and pretty-printing of data structures based on SYB
rose-trees library: A collection of rose tree structures.
tries library: Various trie implementations in Haskell

Tutorials

HaskellTutorials program: Haskell Tutorials by Evgeny Ukhanov

Type Inference

ml-w library and program: Minimal ML language to to demonstrate the W type infererence algorithm.

Type System

cluss library: simple alternative to type classes
data-type library: Basic type wrangling types and classes
defargs library: default arguments in haskell
eq library: Leibnizian equality
ghc-tcplugins-extra library: Utilities for writing GHC type-checker plugins
ghc-typelits-extra library: Additional type-level operations on GHC.TypeLits.Nat
ghc-typelits-natnormalise library: GHC typechecker plugin for types of kind GHC.TypeLits.Nat
kinds library: Emulation of subkinds and subkind polymorphism
names library: Type level names.
natural-number library: Natural numbers tagged with a type-level representation of the number.
nullary library: A package for working with nullary type classes.
reorderable library: Define compound types that do not depend on member order.
sext library: Lists, Texts and ByteStrings with type-encoded length
tfp library: Type-level integers, booleans, lists using type families
tfp-th library: Template-Haskell code for tfp
type-booleans library: Type-level booleans via type-families
type-cereal library: Type-level serialization of type constructors
type-digits library: Arbitrary-base type-level digits
type-eq library: Type equality evidence you can carry around
type-functions library: Emulation of type-level functions
type-level-natural-number library: Simple type level natural numbers
type-level-natural-number-induction library: High-level combinators for performing inductive operations.
type-level-natural-number-operations library: Basic operations on type-level natural numbers.
type-level-numbers library: Type level numbers implemented using type families.
type-level-sets library: Type-level sets and finite maps (with value-level counterparts)
type-ord library: Type-level comparison operator
type-ord-spine-cereal library: Generic type-level comparison of types
type-settheory library: Sets and functions-as-relations in the type system
type-spine library: A spine-view on types
uom-plugin library: Units of measure as a GHC typechecker plugin

Types

type-iso library: Typeclasses for injective relations and isomorphisms between types.

Typography

cubicbezier library: Efficient manipulating of 2D cubic bezier curves.
dvi-processing library: Read/write DVI and TFM file
fmark program: A Friendly Markup language without syntax.
layout library: Turn values into pretty text or markup
typography-geometry library: Drawings for printed text documents

UI

fltkhs library and programs: FLTK bindings
fltkhs-demos programs: FLTKHS demos. Please scroll to the bottom for more information.
fltkhs-fluid-demos programs: Fltkhs Fluid Demos
fltkhs-fluid-examples programs: Fltkhs Fluid Examples
fltkhs-hello-world program: Fltkhs template project
WL500gPControl programs: A simple command line tools to control the Asus WL500gP router

Unification

monad-unify library: Generic first-order unification
unification-fd library: Simple generic unification algorithms.

Uniform

uni-events library: Event handling for the uniform workbench
uni-posixutil library: Posix utilities for the uniform workbench
uni-reactor library: Reactors for the uniform workbench
uni-util library: Utilities for the uniform workbench

Unknown

ioref-stable library: iorefs with a unique stable index

Unsafe

true-name library: Template Haskell hack to violate module abstractions
unsafeperformst library: Like unsafeperformIO, but for the ST monad.

Ur/Web

urembed program: Ur/Web static content generator
urxml program: XML parser-printer supporting Ur/Web syntax extensions

User Interfaces

ansi-terminal library and program: Simple ANSI terminal support, with Windows compatibility
ansi-wl-pprint library and program: The Wadler/Leijen Pretty Printer for colored ANSI terminal output
binding-core library: Data Binding
binding-gtk library: Data Binding in Gtk2Hs
binding-wx library: Data Binding in WxHaskell
byline library and programs: Library for creating command-line interfaces (colors, menus, etc.)
concurrent-output library: Ungarble output from several threads or commands
concurrentoutput library: Ungarble output from several threads
crystalfontz library: Control Crystalfontz LCD displays.
editline library: Bindings to the editline library (libedit).
fenfire programs: Graph-based notetaking system
formlets library: Formlets implemented in Haskell
formlets-hsp library: HSP support for Formlets
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
GtkGLTV library: OpenGL support for Gtk-based GUIs for Tangible Values
GtkTV library: Gtk-based GUIs for Tangible Values
GuiTV library: GUIs for Tangible Values
Hashell program: Simple shell written in Haskell
haskeline library: A command-line interface for user input, written in Haskell.
haskeline-class library: Class interface for working with Haskeline
HCL library and program: High-level library for building command line interfaces.
hs-fltk library: Binding to GUI library FLTK
hscurses-fish-ex program: hscurses swimming fish example
lambdacat library and program: Webkit Browser
midair library: Hot-swappable FRP
monad-parallel-progressbar library: Parallel execution of monadic computations with a progress bar
nanocurses library: Simple Curses binding
ncurses library: Modernised bindings to GNU ncurses
phooey library: Functional user interfaces
progress library: Simple progress tracking & projection library
proplang library: A library for functional GUI development
reflex-dom library: Functional Reactive Web Apps with Reflex
repline library and programs: Haskeline wrapper for GHCi-like REPL interfaces.
settings library: Runtime-editable program settings.
Shellac library: A framework for creating shell envinronments
Shellac-compatline library: "compatline" backend module for Shellac
Shellac-editline library: Editline backend module for Shellac
Shellac-haskeline library: Haskeline backend module for Shellac
Shellac-readline library: Readline backend module for Shellac
sneakyterm library: Tiny, declarative wrapper around ncurses
stylized library: Ways to output stylized text on ANSI consoles.
terminal-progress-bar library: A simple progress bar in the terminal
terminfo library: Haskell bindings to the terminfo library.
vty library and program: A simple terminal UI library
vty-examples programs: Examples programs using the vty library.
vty-ui library and programs: An interactive terminal user interface library for Vty
vty-ui-extras library: Extra vty-ui functionality not included in the core library
wizards library: High level, generic library for interrogative user interfaces
wx library: wxHaskell
wxc library: wxHaskell C++ wrapper
wxcore library: wxHaskell core
WXDiffCtrl library: WXDiffCtrl
wxdirect library and program: helper tool for building wxHaskell
xtc library: eXtended & Typed Controls for wxHaskell.
zipedit library: Create simple list editor interfaces

User-interface

hscurses library: NCurses bindings for Haskell
reflex-dom library: Functional Reactive Web Apps with Reflex

Utilities

hx library: Haskell extras (missing utility functions).
nicify program: Pretty print the standard output of default `Show` instances.
nicify-lib library: Pretty print the standard output of default `Show` instances.
pong-server library: A simple embedded pingable server that runs in the background.
Southpaw library: Assorted utility modules
una program: Universal un-archiver utility
yamlkeysdiff program: Compares the keys from two yaml files

Utility

alea program: a diceware passphrase generator
autoexporter library and program: Automatically re-export modules.
bento library: 🍱 Manage stateful components.
fcd library and program: A faster way to navigate directories using the command line.
flow library: Write more understandable Haskell.
git-annex program: manage files with git, without checking their contents into git
git-repair program: repairs a damanged git repisitory
github-backup programs: backs up everything github knows about a repository, to the repository
github-release library and program: Upload files to GitHub releases.
gnome-desktop program: Randomly set a picture as the GNOME desktop background
hascal library and program: A minimalistic but extensible and precise calculator
haskades program: Utility to generate bindings for BlackBerry Cascades
herbalizer program: HAML to ERB translator
hinduce-missingh library: Utility functions
hutton program: A program for the button on Reddit.
JYU-Utils library: Some utility functions for JYU projects
mbox-tools programs: A collection of tools to process mbox files
meta-misc library: Utility library providing miscellaneous meta-programming utilities.
monad-gen library: A simple monad for generating fresh integers
mustache2hs program: Utility to generate Haskell code from Mustache templates
native library and program: Native library manager for Windows
not-in-base library: Useful utility functions that only depend on base.
propellor library and programs: property-based host configuration management in haskell
pub programs: Pipe stdin to a redis pub/sub channel
puffytools library and program: A CLI assistant
rosa program: Query the namecoin blockchain
rosso library: General purpose utility library
route-generator program: Utility to generate routes for use with yesod-routes
skeleton program: a tool to access the OSX keychain
strings library: Functions for working with strings, including Text, ByteString, etc.
sync-mht library and program: Fast incremental file transfer using Merkle-Hash-Trees
Webrexp library and program: Regexp-like engine to scrap web data

Utils

alfred library: utility library for Alfred version 2
api-field-json-th library: option of aeson's deriveJSON
bitly-cli program: A command line tool to access bit.ly URL shortener.
bluetileutils program: Utilities for Bluetile
cabal-bounds library and program: ...
cabal-cargs library and program: A command line program for extracting compiler arguments from a cabal file.
cabal-lenses library: Lenses and traversals for the Cabal library.
CabalSearch program: Search cabal packages by name
cblrepo program: Tool to maintain a database of CABAL packages and their dependencies
cgrep program: Command line tool
clean-home program: Keep your home dir clean by finding old conf files
cltw program: Command line Twitter utility
confsolve program: A command line tool for resolving conflicts of file synchronizers.
csv-nptools programs: A collection of CSV tools
data-util library: utilities for handle data
dropsolve program: A command line tool for resolving dropbox conflicts. Deprecated! Please use confsolve.
ecu programs: Tools for automotive ECU development.
EditTimeReport program: Query language and report generator for edit logs.
email-validator program: Perform basic syntax and deliverability checks on email addresses.
error-loc library: An error replacement with call-site metadata.
fishfood library and program: Calculates file-size frequency-distribution.
fordo program: Run a command on files with magic substituion support (sequencing and regexp)
fuzzytime library and program: A 'ten past six' style clock
Geodetic library: Geodetic calculations
GPX library: Parse GPX files
haeredes program: Confirm delegation of NS and MX records.
hascal library and program: A minimalistic but extensible and precise calculator
hath program: Hath manipulates network blocks in CIDR notation.
hp2any-core library: Heap profiling helper library
hp2any-graph programs: ...
hp2any-manager program: A utility to visualise and compare heap profiles.
hsimport library and program: A command line program for extending the import list of a Haskell source file.
htags program: A Haskell98 parsing tags program similar to ctags.
htsn program: Parse XML files from The Sports Network feed.
htsn-common library: Display/logging facilities used by both htsn and htsn-import.
htsn-import program: Import XML files from The Sports Network into an RDBMS.
hunp program: Unpacker tool with DWIM
jarfind library and program: Tool for searching java classes, members and fields in classfiles and JAR archives
json-tools programs: A collection of JSON tools
katt library and program: Client for the Kattis judge system.
kevin program: a dAmn ↔ IRC proxy
lat program: Tool to track security alerts on LWN
list-remote-forwards program: List all remote forwards for mail accounts stored in a SQL database.
log2json library and program: Turn log file records into JSON.
ltext library and program: Higher-order file applicator
mailbox-count program: Count mailboxes in a SQL database.
make-package program: Make a cabalized package
minirotate program: Minimalistic file rotation utility
modsplit library and program: Haskell source splitter driven by special comments.
nptools programs: A collection of random tools
Nutri library: A little library to calculate nutrition values of food items.
OSM library: Parse OpenStreetMap files
PastePipe library and program: CLI for pasting to lpaste.net
pb program: pastebin command line application
pdfsplit program: split two-column PDFs, so there is one column per page
pointless-fun library: Some common point-free combinators.
practice-room program: Practice Room
Printf-TH library
radix program: Command-line tool for emitting numbers in various bases.
readline-statevar library: Readline with variables (setX/getY) wrapped in state vars
Referees library and program: A utility for computing distributions of material to review among reviewers.
revdectime program: A French revolutionary decimal time (metric) clock
rezoom program: Github resume generator
sorty program: Sort lines per file size
squeeze library and program: A file-packing application.
stratum-tool program: Client for Stratum protocol
subtitles program: Modify SRT subtitle files.
temporary library: Portable temporary file and directory support for Windows and Unix, ...
temporary-rc library: Portable temporary file and directory support for Windows and Unix, ...
temporary-resourcet library: Portable temporary files and directories with automatic deletion
tempus-fugit library and program: Programmers' time tracker
todos library and program: Easy-to-use TODOs manager.
toolshed library: Ill-defined library.
turtle-options library and program: Collection of command line options and parsers for these options
unusable-pkg program: Utility construction of the graph depending unusable packages.
up program: Command line tool to generate pathnames to facilitate moving upward in a file system.
vigilance programs: An extensible dead-man's switch system
wtk library: Wojcik Tool Kit
wtk-gtk library: GTK tools within Wojcik Tool Kit
Xec program: Gtk command launcher with identicon

Uzbl

uzbl-with-source library: Utility function for reading a source of loaded uzbl pages.

Vector

hybrid-vectors library: Hybrid vectors e.g. Mixed Boxed/Unboxed vectors
sparse library: A playground of sparse linear algebra primitives using Morton ordering
vinyl-vectors library and program: Vectors for vinyl vectors

Video

vimeta library and program: Frontend for video metadata tagging tools

Visual Programming

sifflet program: A simple, visual, functional programming language.
sifflet-lib library: Library of modules shared by sifflet and its tests and its exporters.

Wai

wai-request-spec library: Declarative request parsing

Water

SWMMoutGetMB library: A parser for SWMM 5 binary .OUT files

Web

accentuateus library: A Haskell implementation of the Accentuate.us API.
acme-http library and programs: fastest Haskell PONG server in the world
adblock2privoxy program: Convert adblock config files to privoxy format
adobe-swatch-exchange library and programs: parse Adobe Swatch Exchange files and (optionally) output .css files with the colors
aeson library: Fast JSON parsing and encoding
aeson-better-errors library: Better error messages when decoding JSON values.
aeson-compat library: Compatibility layer for aeson
aeson-diff library and programs: Extract and apply patches to JSON documents.
aeson-extra library: Extra goodies for aeson
aeson-filthy library: Several newtypes and combinators for dealing with less-than-cleanly JSON input.
aeson-flatten library: JSON flatten for Aeson
aeson-native library: Fast JSON parsing and encoding (deprecated)
aeson-prefix library: Hiearchical prefixing for aeson
aeson-pretty library and program: JSON pretty-printing library and command-line tool.
aeson-smart library: Smart derivation of Aeson instances
aeson-streams library: An HTTP client library for JSON-based APIs
aeson-toolkit library: A generalization of Aeson over Failure
airship library: A Webmachine-inspired HTTP library
amazon-products library and program: Connector for Amazon Products API
analyze-client library: Client for analyze service
android-lint-summary library and program: A pretty printer for Android Lint errors
ansi-pretty library: AnsiPretty for ansi-wl-pprint
Ansi2Html program: Convert ANSI Terminal Sequences to nice HTML markup
antagonist library and program: A web interface to Antisplice dungeons.
api-tools library and program: DSL for generating API boilerplate and docs
apiary library: Simple and type safe web framework that generate web API documentation.
apiary-authenticate library: authenticate support for apiary web framework.
apiary-clientsession library: clientsession support for apiary web framework.
apiary-cookie library: Cookie support for apiary web framework.
apiary-eventsource library: eventsource support for apiary web framework.
apiary-helics library: helics support for apiary web framework.
apiary-http-client library: A http client for Apiary.
apiary-logger library: fast-logger support for apiary web framework.
apiary-memcached library: memcached client for apiary web framework.
apiary-mongoDB library: mongoDB support for apiary web framework.
apiary-persistent library: persistent support for apiary web framework.
apiary-purescript library: purescript compiler for apiary web framework.
apiary-session library: session support for apiary web framework.
apiary-websockets library: websockets support for apiary web framework.
apis library: A Template Haskell library for generating type safe API calls
atlassian-connect-core library: Atlassian Connect snaplet for the Snap Framework and helper code.
atndapi library: An interface of ATND API
atom-basic library: Basic Atom feed construction
authenticate library: Authentication methods for Haskell web applications.
authenticate-kerberos library: Authentication methods for Haskell web applications.
authenticate-ldap library: LDAP authentication for Haskell web applications.
authenticate-oauth library: Library to authenticate with OAuth for Haskell web applications.
awesomium library: High-level Awesomium bindings.
awesomium-glut library: Utilities for using Awesomium with GLUT.
awesomium-raw library: Low-level Awesomium bindings.
aws library and programs: Amazon Web Services (AWS) for Haskell
aws-cloudfront-signer library: For signing AWS CloudFront HTTP URL requests
aws-ec2 library and programs: AWS EC2/VPC, ELB and CloudWatch client library for Haskell
aws-elastic-transcoder library and program: Haskell suite for the Elastic Transcoder service
aws-general library: Bindings for Amazon Web Services (AWS) General Reference
aws-kinesis library: Bindings for Amazon Kinesis
aws-performance-tests library and program: Performance Tests for the Haskell bindings for Amazon Web Services (AWS)
aws-route53 library: Amazon Route53 DNS service plugin for the aws package.
aws-sdk-text-converter library: The text converter for aws-sdk.
aws-sign4 library: Amazon Web Services (AWS) Signature v4 HTTP request signer
aws-sns library: Bindings for AWS SNS Version 2013-03-31
azure-acs library: Windows Azure ACS
azure-servicebus library: Haskell wrapper over Microsoft Azure ServiceBus REST API
bamboo library: A blog engine on Hack
bamboo-launcher program: bamboo-launcher
bamboo-plugin-highlight library: A highlight middleware
bamboo-plugin-photo library: A photo album middleware
bamboo-theme-blueprint library: bamboo blueprint theme
bamboo-theme-mini-html5 library: bamboo mini html5 theme
barley program: A web based environment for learning and tinkering with Haskell
base58address library: Parsing and serialization for Base58 addresses (Bitcoin and Ripple)
bdo library and program: Update CSS in the browser without reloading the page.
binary-orphans library: Orphan instances for binary
binary-tagged library: Tagged binary serialisation.
bird library and program: A simple, sinatra-inspired web framework.
Bitly library: A library to access bit.ly URL shortener.
bitly-cli program: A command line tool to access bit.ly URL shortener.
bitx-bitcoin library: A Haskell library for working with the BitX bitcoin exchange.
blatex program: Blog in LaTeX
blaze-bootstrap library: Blaze helper functions for bootstrap pages
blaze-html-contrib library: Some contributions to add handy things to blaze html.
blaze-shields library: create svg by Haskell
blogination library and program: Very simple static blog software
BlogLiterately library and program: A tool for posting Haskelly articles to blogs
BlogLiterately-diagrams library and program: Include images in blog posts with inline diagrams code
bloodhound-amazonka-auth library: Adds convenient Amazon ElasticSearch Service authentication to Bloodhound.
BluePrintCSS library: Html document layout library.
blunt library and program: Convert between pointfree and pointful expressions.
board-games library and program: Three games for inclusion in a web server
boomange program: A Bookmarks manager with a HTML generator
botpp library and program: Build tool for Lambdabot
bower-json library: Read bower.json from Haskell
breve program: a url shortener
bugzilla library and program: A Haskell interface to the Bugzilla native REST API
Buster program: Hits a set of urls periodically to bust caches
campfire library: Haskell implementation of the Campfire API
canteven-template library: A few utilites and helpers for using Template Haskell in your projects.
car-pool program: Simple web-server for organizing car-pooling for an event
cascading library: DSL for HTML CSS (Cascading Style Sheets)
cassava library: A CSV parsing and encoding library
cgi-utils library: Simple modular utilities for CGI/FastCGI (sessions, etc.)
charade library and program: Rapid prototyping websites with Snap and Heist
cheapskate-lucid library: Use cheapskate with Lucid
cheapskate-terminal library and program: Initial project template from stack
chu2 library: FFI for Chu2 Agda Web Server Interface
CHXHtml library: A W3C compliant (X)HTML generating library
circlehs library: The CircleCI REST API for Haskell
clay library: CSS preprocessor as embedded Haskell.
clientsession library and program: Securely store session data in a client-side cookie.
codepad library: Submit and retrieve paste output from CodePad.org.
coinbase-exchange library and program: Connector library for the coinbase exchange.
collection-json library: Collection+JSON hypermedia type tools
coltrane library: A jazzy, minimal web framework for Haskell, inspired by Sinatra.
cookie library: HTTP cookie parsing and rendering
copr library: Haskell interface to the Fedora Copr system
couchdb-enumerator library: Couch DB client library using http-enumerator and aeson
cqrs-example program: Example for cqrs package
craze library and program: HTTP Racing Library
crc library: Implements various Cyclic Redundancy Checks (CRC)
cryptsy-api library: Bindings for Cryptsy cryptocurrency exchange API.
css-text library: CSS parser and renderer.
curl-aeson library: Communicate with HTTP service using JSON
daemonize-doublefork library: Start background daemons by double-forking
darcsden programs: Darcs repository UI and hosting/collaboration app (hub.darcs.net branch).
DarcsHelpers library: Code used by Patch-Shack that seemed sensible to open for reusability
data-object-yaml library and program: Serialize data to and from Yaml files (deprecated)
dataurl library: Handle data-urls
DAV library and program: RFC 4918 WebDAV support
delicious library: Accessing the del.icio.us APIs from Haskell (v2)
dgs library: Haskell front-end for DGS' bot interface
digestive-bootstrap library: Speed up form designing using digestive functors and bootstrap
digestive-foundation-lucid library: Speed up form designing using digestive functors and foundation
digestive-functors library: A practical formlet library
digestive-functors-aeson library: Run digestive-functors forms against JSON
digestive-functors-blaze library: Blaze frontend for the digestive-functors library
digestive-functors-happstack library: Happstack backend for the digestive-functors library
digestive-functors-heist library: Heist frontend for the digestive-functors library
digestive-functors-hsp library: HSP support for digestive-functors
digestive-functors-lucid library: Lucid frontend for the digestive-functors library
digestive-functors-scotty library: Scotty backend for the digestive-functors library
digestive-functors-snap library: Snap backend for the digestive-functors library
digitalocean-kzs library: digitalocean api for haskell
dingo-core library: Dingo is a Rich Internet Application platform based on the Warp web server.
dingo-example program: Dingo Example
dingo-widgets library: Dingo Widgets
discogs-haskell library: Client for Discogs REST API
dixi library and program: A wiki implemented with a firm theoretical foundation.
doc-review programs: Document review Web application, like http://book.realworldhaskell.org/
DOM library: DOM Level 2 bindings for the WebBits package.
dom-selector library: DOM traversal by CSS selectors for xml-conduit package
domplate library: A simple templating library using HTML5 as its template language.
dozens library: dozens api library
duplo library and program: Frontend development build tool
easy-api library: Utility code for building HTTP API bindings more quickly.
ede library: Templating language with similar syntax and features to Liquid or Jinja2.
elm-bridge library: Derive Elm types from Haskell types
elm-yesod library: The Elm language Yesod compatibility module.
elo library: Elo Rating Library
engine-io library: A Haskell implementation of Engine.IO
engine-io-growler library
envelope library: Defines generic 'Envelope' type to wrap reponses from a JSON API.
esotericbot library and program: Esotericbot is a sophisticated, lightweight IRC bot.
ety library and program: Random etymology online entry.
extemp program: automated printing for extemp speakers
factual-api library: A driver for the Factual API
fay library and programs: A compiler for Fay, a Haskell subset that compiles to JavaScript.
fay-builder library: Compile Fay code on cabal install, and ad-hoc recompile during development
fay-dom library: DOM FFI wrapper library for Fay
fay-geoposition library: W3C compliant implementation of GeoPosition API.
fay-jquery library: jQuery bindings for Fay.
fay-uri library: Persistent FFI bindings for using jsUri in Fay
fb library: Bindings to Facebook's API.
fb-persistent library: Provides Persistent instances to Facebook types.
fckeditor library: Server-Side Integration for FCKeditor
fedora-packages library: Haskell interface to the Fedora Packages webapp API.
feed-cli program: A simple command line interface for creating and updating feeds like RSS
feed-collect library: Watch RSS/Atom feeds (and do with them whatever you like).
feed-translator program: Translate syndication feeds
feed2twitter library and program: Send posts from a feed to Twitter
FermatsLastMargin program: Annotate ps and pdf documents
ffeed library and programs: Haskell binding to the FriendFeed API
fields-json library: Abusing monadic syntax JSON objects generation.
Finance-Quote-Yahoo library: Obtain quote data from finance.yahoo.com
Finance-Treasury library: Obtain Treasury yield curve data
flamethrower library: A template engine for HTML
flickr library and programs: Haskell binding to the Flickr API
flowdock library: Flowdock client library for Haskell
flowdock-rest library: Flowdock REST API
fn library: A functional web framework.
fn-extra library: Extras for Fn, a functional web framework.
follower program: Follow Tweets anonymously
forecast-io library: A Haskell library for working with forecast.io data.
formlets library: Formlets implemented in Haskell
formlets-hsp library: HSP support for Formlets
frame library and program: A simple web framework.
frame-markdown library: A markdown to Frame GUI writer for Pandoc
freesound library: Access the Freesound Project database
friendly-time library: Print time information in friendly ways
funbot-client library: Report events to FunBot over a JSON/HTTP API.
funbot-ext-events library: Interact with FunBot's external events.
funbot-git-hook program: Git hook which sends events to FunBot.
gc-monitoring-wai library: a wai application to show GHC.GCStats
geek library: Geek blog engine
geek-server library and program: Geek blog engine server
generics-sop-lens library: Lenses for types in generics-sop
gentlemark library: Gentle markup language
geo-resolver library: Performs geo location lookups and parses the results
GeocoderOpenCage library: Geocoder and Reverse Geocoding Service Wrapper
getemx program: Fetch from emusic using .emx files
ghcjs-ajax library: Crossbrowser AJAX Bindings for GHCJS
ghcjs-codemirror library: Installs CodeMirror JavaScript files
ghcjs-dom library: DOM library that supports both GHCJS and WebKitGTK
ghcjs-dom-hello program: GHCJS DOM Hello World, an example package
ghcjs-hplay library: monadic, reactive Formlets running in the Web browser
ghcjs-websockets library: GHCJS interface for the Javascript Websocket API
ghclive library and program: Interactive Haskell interpreter in a browser.
giphy-api library and program: Giphy HTTP API wrapper and CLI search tool.
gist program: A reliable command-line client for gist.github.com
github-post-receive library: GitHub webhooks library
google-html5-slide program: Google HTML5 Slide generator
google-mail-filters library: Write GMail filters and output to importable XML
google-search library: EDSL for Google and GMail search expressions
google-translate library: Google Translate API bindings
googleplus library: Haskell implementation of the Google+ API v1
gore-and-ash-sync library: Gore&Ash module for high level network synchronization
graphql library: Haskell GraphQL implementation
graylog library: Support for graylog output.
growler library: A revised version of the scotty library that attempts to be simpler and more performant.
h-booru library and program: Haskell library for retrieving data from various booru image sites
hack library: a Haskell Webserver Interface
hack-contrib library: Hack contrib
hack-contrib-press library: Hack helper that renders Press templates
hack-frontend-happstack library: hack-frontend-happstack
hack-frontend-monadcgi library: Allows programs written against MonadCGI to run with any hack handler. (deprecated)
hack-handler-cgi library: Hack handler using CGI protocol. (deprecated)
hack-handler-epoll library: hack handler implementation using epoll
hack-handler-evhttp library: Hack EvHTTP (libevent) Handler
hack-handler-fastcgi library: Hack handler direct to fastcgi (deprecated)
hack-handler-happstack library: Hack Happstack server handler
hack-handler-hyena library: Hyena hack handler
hack-handler-kibro library: Hack Kibro handler
hack-handler-simpleserver library: A simplistic HTTP server handler for Hack. (deprecated)
hack-middleware-cleanpath library: Applies some basic redirect rules to get cleaner paths. (deprecated)
hack-middleware-clientsession library: Middleware for easily keeping session data in client cookies. (deprecated)
hack-middleware-gzip library: Automatic gzip compression of responses. (deprecated)
hack-middleware-jsonp library: Automatic wrapping of JSON responses to convert into JSONP. (deprecated)
hack2 library: a Haskell Webserver Interface (V2)
hack2-contrib library: Hack2 contrib
hack2-contrib-extra library: Hack2 contrib extra
hack2-handler-happstack-server library: Hack2 Happstack server handler
hack2-handler-mongrel2-http library: Hack2 Mongrel2 HTTP handler
hack2-handler-snap-server library: Hack2 Snap server handler
hack2-handler-warp library: Hack2 warp handler
hack2-interface-wai library: Hack2 interface of WAI
hackage2twitter program: Send new Hackage releases to Twitter
hackernews library: API for Hacker News
haggis library and program: A static site generator with blogging/comments support
Haggressive library: Aggression analysis for Tweets on Twitter
hails library and program: Multi-app web platform framework
hails-bin program: Dynamic launcher of Hails applications
hairy library and program: A JSON REST API
hakismet library: Akismet spam protection library
hakyll library and program: A static website compiler library
hakyll-agda library: Wrapper to integrate literate Agda files with Hakyll
hakyll-blaze-templates library: Blaze templates for Hakyll
hakyll-contrib library and program: Extra modules for the hakyll website compiler
hakyll-contrib-hyphenation library: automatic hyphenation for Hakyll
hakyll-contrib-links library: A hakyll library that helps maintain a separate links database.
hakyll-convert library and programs: Convert from other blog engines to Hakyll.
hakyll-elm library: Hakyll wrapper for the Elm compiler.
hakyll-filestore library: FileStore utilities for Hakyll
hakyll-R library: A package allowing to write Hakyll blog posts in Rmd
hakyll-sass library: Hakyll SASS compiler over hsass
hamlet library: Haml-like template files that are compile-time checked (deprecated)
HAppS-Data library: HAppS data manipulation libraries
happs-hsp-template library: Utilities for using HSP templates in HAppS applications.
HAppS-IxSet library
HAppS-Server library: Web related tools and services.
HAppS-State library: Event-based distributed state.
happs-tutorial program: A Happstack Tutorial that is its own web 2.0-type demo.
HAppS-Util library: Web framework
HAppSHelpers library: OBSOLETE. Please use happstack-helpers
happstack library and program: The haskell application server stack + code generation
happstack-auth library: A Happstack Authentication Suite
happstack-authenticate library: Happstack Authentication Library
happstack-clientsession library: client-side session data
happstack-contrib library and program: Web related tools and services.
happstack-data library and program: Happstack data manipulation libraries
happstack-dlg library: Cross-request user interactions for Happstack
happstack-facebook library and program: A package for building Facebook applications using Happstack
happstack-fastcgi library: Happstack extension for use with FastCGI.
happstack-hamlet library: Support for Hamlet HTML templates in Happstack
happstack-heist library: Support for using Heist templates in Happstack
happstack-hsp library: Support for using HSP templates in Happstack
happstack-hstringtemplate library: Support for using HStringTemplate in Happstack
happstack-ixset library and program: Efficient relational queries on Haskell sets.
happstack-jmacro library: Support for using JMacro with Happstack
happstack-lite library: Happstack minus the useless stuff
happstack-monad-peel library: monad-peel instances for Happstack types
happstack-plugins library: The haskell application server stack + reload
happstack-server library: Web related tools and services.
happstack-server-tls library: extend happstack-server with https:// support (TLS/SSL)
happstack-server-tls-cryptonite library: Extend happstack-server with native HTTPS support (TLS/SSL)
happstack-state library and program: Event-based distributed state.
happstack-static-routing library: Support for static URL routing with overlap detection for Happstack.
happstack-util library and program: Web framework
happstack-yui library: Utilities for using YUI3 with Happstack.
haroonga-httpd program: Yet another Groonga http server.
hashids library: Hashids generates short, unique, non-sequential ids from numbers.
haskell-kubernetes library and programs: Haskell bindings to the Kubernetes API (via swagger-codegen)
haskmon library: A haskell wrapper for PokeAPI.co (www.pokeapi.co)
haskoon library: Web Application Abstraction
haskoon-httpspec library: Integrating HttpSpec with Haskoon
haskoon-salvia library: Integrating HttpSpec with Haskoon
haste program: A universal pastebin tool, written in Haskell.
haste-compiler library and programs: Haskell To ECMAScript compiler
haste-gapi library: Google API bindings for the Haste compiler
haste-markup library: A port of blaze-markup and blaze-html to Haste
haste-perch library: Create, navigate and modify the DOM tree with composable syntax, with the haste compiler
hawitter program: A twitter client for GTK+. Beta version.
Hawk library: Haskell Web Application Kit
haxl-amazonka library: Haxl data source for accessing AWS services through amazonka.
haxy library: A simple HTTP proxy server library
hbro library and program: Minimal extensible web-browser
hbro-contrib library: Third-party extensions to hbro.
hcheat library: A collection of code cheatsheet
hdigest library: Server-side HTTP Digest (RFC2617) in the CGI monad
heist library: An Haskell template system supporting both HTML5 and XML.
heist-aeson library: Use JSON directly from Heist templates.
heist-async library: Adding support for asynchronous updates ("AJAX") with heist
hermes library and programs
heroku library: helpers for deploying to Heroku
herringbone library: A library for compiling and serving static web assets.
herringbone-embed library: Embed preprocessed web assets in your executable with Template Haskell.
herringbone-wai library: Wai adapter for the Herringbone web asset preprocessor.
hharp library: Binding to libharp
highjson library: Very fast JSON serialisation and parsing library
hipbot library: A library for building HipChat Bots
hipchat-hs library: Hipchat API bindings in Haskell
hissmetrics library: Unofficial API bindings to KISSmetrics.
HJScript library: HJScript is a Haskell EDSL for writing JavaScript programs.
hjsmin library and program: Haskell implementation of a javascript minifier
hkdf library: Implementation of HKDF (RFC 5869)
hlongurl library and program: Library and utility interfacing to longurl.org
hpaste program: Haskell paste web site.
hpasteit program: A command-line client for hpaste.org
hplayground library: monadic, reactive Formlets running in the Web browser
hquery library: A query language for transforming HTML5
hs-duktape library: Haskell bindings for a very compact embedded ECMAScript (JavaScript) engine.
hs-nombre-generator program: Name generator.
hs-scrape library: Simple and easy web scraping and automation in Haskell.
hs-twitter library: Haskell binding to the Twitter API
hS3 library and program: Interface to Amazon's Simple Storage Service (S3)
hScraper library: A Haskell library to scrape and crawl web-pages
hscuid library: Collision-resistant IDs
hsebaysdk library: Haskell eBay SDK
hSimpleDB library: Interface to Amazon's SimpleDB service.
hsp library: Haskell Server Pages is a library for writing dynamic server-side web pages.
hsp-cgi library: Facilitates running Haskell Server Pages web pages as CGI programs.
hspec-snap library: A library for testing with Hspec and the Snap Web Framework
hspec-webdriver library: Write end2end web application tests using webdriver and hspec
hsreadability library: Access to the Readability API.
hsx-jmacro library: hsp+jmacro support
hsx-xhtml library: XHTML utilities to use together with HSX.
html library: HTML combinator library
html-conduit library: Parse HTML documents using xml-conduit datatypes.
html-kure library: HTML rewrite engine, using KURE.
html-rules library: Perform traversals of HTML structures using sets of rules.
http-accept library: Functions for working with HTTP Accept headers
http-api-data library: Converting to/from HTTP API data like URL pieces, headers and query parameters.
http-attoparsec library: Attoparsec parsers for http-types.
http-client-streams library: http-client for io-streams supporting openssl
http-common library: Common types for HTTP clients and servers
http-conduit library: HTTP client package with conduit interface and HTTPS support.
http-conduit-browser library: Browser interface to the http-conduit package
http-conduit-downloader library: HTTP downloader tailored for web-crawler needs.
http-date library: HTTP Date parser/formatter
http-encodings library: A library for encoding and decoding bodies of HTTP messages
http-enumerator library and program: HTTP client package with enumerator interface and HTTPS support. (deprecated)
http-kinder library: Generic kinds and types for working with HTTP
http-link-header library: A parser and writer for the HTTP Link header as specified in RFC 5988 "Web Linking".
http-listen library: Listen to HTTP requests and handle them in arbitrary ways.
http-media library: Processing HTTP Content-Type and Accept headers
http-proxy library: A library for writing HTTP and HTTPS proxies
http-reverse-proxy library: Reverse proxy HTTP requests, either over raw sockets or with WAI
http-streams library: An HTTP client using io-streams
http-test library and program: Test framework for HTTP APIs
http-types library: Generic HTTP types for Haskell (for both client and server code).
httpd-shed library and program: A simple web-server with an interact style API
httpspec library: Specification of HTTP request/response generators and parsers
hweblib library: Haskell Web Library
hworker-ses library: Library for sending email with Amazon's SES and hworker
hxweb library: Minimal webframework using fastcgi, libxml2 and libxslt.
hyperdrive library and program: a fast, trustworthy HTTP(s) server built
hyperpublic library: A thin wrapper for the Hyperpublic API
hzaif library and program: This package is Zaif Exchange Api wrapper
hzulip library: A haskell wrapper for the Zulip API.
ical library and program: iCalendar format parser and org-mode converter.
ig library: Bindings to Instagram's API.
imgurder library and program: Uploader for Imgur
imm library and program: Execute arbitrary actions for each unread element of RSS/Atom feeds
indieweb-algorithms library: A collection of implementations of IndieWeb algorithms.
informative library and program: A yesod subsite serving a wiki.
inquire program: Console client for encyclopedias
insert-ordered-containers library: Associative containers retating insertion order for traversals.
io-streams-http library: http-client for io-streams
iptadmin program: web-interface for iptables
isohunt library: Bindings to the isoHunt torrent search API
ivy-web library: A lightweight web framework
jcdecaux-vls library: JCDecaux self-service bicycles API client
jespresso library and program: Extract all JavaScript from an HTML page and consolidate it in one script.
jmacro-rpc library: JSON-RPC clients and servers using JMacro, ...
jmacro-rpc-happstack library: Happstack backend for jmacro-rpc
jmacro-rpc-snap library: Snap backend for jmacro-rpc
jonathanscard library: An implementation of the Jonathan's Card API.
jsaddle library: High level interface for webkit-javascriptcore
jsaddle-hello program: JSaddle Hello World, an example package
jsc library: High level interface for webkit-javascriptcore
json library: Support for serialising Haskell to and from JSON
json2yaml program: Utility to convert a file from JSON to YAML format. (deprecated)
juandelacosa program: Manage users in MariaDB >= 10.1.1
JuicyPixels-scale-dct library: Scale JuicyPixels images with DCT
jwt library: JSON Web Token (JWT) decoding and encoding
kansas-comet library: A JavaScript push mechanism based on the comet idiom
Ketchup library: A super small web framework for those who don't like big and fancy codebases
keter library and program: Web application deployment manager, focusing on Haskell web frameworks
keycode library: Maps web browser keycodes to their corresponding keyboard keys
kontrakcja-templates library: Utilities for working with many HStringTemplate templates from files
lackey library: Generate Ruby clients from Servant APIs.
lambdabot program: Lambdabot is a development tool and advanced IRC bot
lambdabot-core library: Lambdabot core functionality
lambdabot-haskell-plugins library: Lambdabot Haskell plugins
lambdabot-irc-plugins library: IRC plugins for lambdabot.
lambdabot-misc-plugins library: Lambdabot miscellaneous plugins
lambdabot-novelty-plugins library: Novelty plugins for Lambdabot
lambdabot-reference-plugins library: Lambdabot reference plugins.
lambdabot-social-plugins library: Social plugins for Lambdabot
lambdabot-trusted library: Lambdabot trusted code.
lambdabot-utils library: Utility libraries for the advanced IRC bot, Lambdabot
lambdacms-core library: LambdaCms 'core' subsite for Yesod apps
lambdacms-media library: LambdaCms "media" extension
lambdaFeed program: RSS 2.0 feed generator
lambdatwit programs: Lambdabot running as a twitter bot. Similar to the @fsibot f# bot.
leaf program: A simple portfolio generator
lens-prelude library: Alternate prelude that exports lens combinators
libravatar library: Use Libravatar, the decentralized avatar delivery service
lighttpd-conf library: Lighttpd configuration file tools.
lighttpd-conf-qq library: A QuasiQuoter for lighttpd configuration files.
link-relations library: Use web link relation types (RFC 5988) in Haskell
LinkChecker program: Check a bunch of local html files for broken links
lio-simple library and program: LIO support for the Simple web framework
lmonad-yesod library: LMonad for Yesod integrates LMonad's IFC with Yesod web applications.
loli library: A minimum web dev DSL in Haskell
lord library and program: A command line interface to online radios.
lucid library: Clear to write, read and edit DSL for HTML
lucienne programs: Server side feed aggregator/reader
luis-client library: An unofficial client for the LUIS NLP service.
mahoro program: ImageBoards to XMPP gate
maid program: A simple static web server
MailchimpSimple library: Haskell library to interact with Mailchimp JSON API Version 3.0
mailgun library and programs: Connector to Rackspace's Mailgun Service
mangopay library and program: Bindings to the MangoPay API
markdown library: Convert Markdown to HTML, with XSS protection
markdown-kate library: Convert Markdown to HTML, with XSS protection
markup library: Abstraction for HTML-embedded content
masakazu-bot program: @minamiyama1994_bot on haskell
mathblog programs: A program for creating and managing a static weblog with LaTeX math and diagrams
mathgenealogy program: Discover your (academic) ancestors!
mediawiki library and programs: Interfacing with the MediaWiki API
medium-sdk-haskell library: Haskell SDK for communicating with the Medium API
metadata library: metadata library for semantic web
MFlow library: stateful, RESTful web framework
microformats2-parser library and program: A Microformats 2 parser.
microformats2-types library: Microformats 2 types (with Aeson instances)
mighttpd2 library and programs: High performance web server on WAI/warp
miku library: A minimum web dev DSL
mime-mail-ses library: Send mime-mail messages via Amazon SES
mime-types library: Basic mime-type handling types and functions
mirror-tweet program: Tweet mirror
moe library: html with style
mohws library and programs: Modular Haskell Web Server
monad-http library: A class of monads which can do http requests
mondo library: Haskell bindings for the Mondo API
mongrel2-handler library: Mongrel2 Handler Library
monoid-owns library: a practical monoid implementation
moonshine library: A web service framework for Haskell, similar in purpose to dropwizard.
muon program: Static blog generator
murmur library and program: Simple CUI Twitter Client.
mysnapsession library: Sessions and continuations for Snap web apps
mysnapsession-example programs: Example projects using mysnapsession
named-formlet library: A simple formlet library with named formlets.
nationstates library: NationStates API client
nemesis-titan library: ...
nero library: Lens-based HTTP toolkit
nero-wai library: WAI adapter for Nero server applications
nero-warp library: Run Nero server applications with Warp
nested-routes library and program: Declarative, compositional Wai responses
network-pgi library: Library for writing PGI applications
network-wai-router library: A routing library for wai
nikepub program: Command line utility publishes Nike+ runs on blogs and Twitter
notmuch-web library and program: A web interface to the notmuch email indexer
oauthenticated library: Simple OAuth for http-client
ohloh-hs library and program: Interface to the Ohloh API
oidc-client library and program: OpenID Connect 1.0 library for RP
olwrapper library and program: An OpenLayers JavaScript Wrapper and Webframework with snaplet-fay
on-a-horse library: "Haskell on a Horse" - A combinatorial web framework
open-browser library and program: Open a web browser from Haskell.
opendatatable library: A library for working with Open Data Tables
operational-extra library: Interpretation functions and simple instruction sets for operational
opml library: Representing and handling OPML subscription information.
orc library and program: Orchestration-style co-ordination EDSL
orchid library: Haskell Wiki Library
orchid-demo program: Haskell Wiki Demo
package-description-remote library: Fetches a 'GenericPackageDescription' from Hackage
pagarme library and program: Pagarme API wrapper
pagure-hook-receiver library: Receive hooks from pagure and do things with them
panda library: A simple static blog engine
paranoia library and program: http proxy server
partial-uri library: Datatype for passing around unresolved URIs.
pastis library: Interface to the past.is URL shortening service
path-pieces library: Components of paths.
patronscraper program: A webpage scraper for Patreon which dumps a list of patrons to a text file.
paypal-adaptive-hoops library and program: Client for a limited part of PayPal's Adaptive Payments API
pcre-heavy library: A regexp library on top of pcre-light you can actually use.
persona library: Persona (BrowserID) library
persona-idp program: Persona (BrowserID) Identity Provider
Phsu program: Personal Happstack Server Utils
pi-calculus program: Applied pi-calculus interpreter
piki program: Yet another text-to-html converter
pipes-http library: HTTP client with pipes interface
pipes-wai library: A port of wai-conduit for the pipes ecosystem
pipes-websockets library and program: WebSockets in the Pipes framework.
pivotal-tracker library and program: A library and a CLI tool for accessing Pivotal Tracker API
plat library: Simple templating library
postgresql-connector library: Initial project postgresql-connector from stack
postgrest library and program: REST API for any Postgres database
press library: Text template library targeted at the web / HTML generation
primula-board program: ImageBoard on Happstack and HSP
primula-bot program: Jabber-bot for primula-board ImageBoard
prometheus library: Prometheus Haskell Client
proton-haskell library: Simple XML templating library
prove-everywhere-server program: The server for ProveEverywhere
psql-helpers library: A small collection of helper functions to generate postgresql queries
pubsub library and programs: A library for Google/SixApart pubsub hub interaction
punycode library: Encode unicode strings to ascii forms according to RFC 3492
purescript-bridge library: Generate PureScript data types from Haskell data types
pursuit-client library and program: A cli client for pursuit
pusher-haskell library: A Pusher.com client written in Haskell
quandl-api library: Quandl.com API library
querystring-pickle library: Picklers for de/serialising Generic data types to and from query strings
Quickson library: Quick JSON extractions with Aeson
quickwebapp library: A quick webapp generator for any file processing tool
rallod library: '$' in reverse.
raml library: RESTful API Modeling Language (RAML) library for Haskell
rascal library and program: A command-line client for Reddit
raven-haskell-scotty library: Sentry http interface for Scotty web server.
rdioh library and programs: A Haskell wrapper for Rdio's API.
react-flux library and programs: A binding to React based on the Flux application architecture for GHCJS
react-haskell library: Haskell React bindings
react-tutorial-haskell-server program: react-tutorial web server
redHandlers library: Monadic HTTP request handlers combinators to build a standalone web apps.
Redmine library: Library to access Redmine's REST services
reflex-dom library: Functional Reactive Web Apps with Reflex
reform library: reform is a type-safe HTML form generation and validation library
reform-blaze library: Add support for using blaze-html with Reform
reform-hamlet library: Add support for using Hamlet with Reform
reform-happstack library: Happstack support for reform.
reform-hsp library: Add support for using HSP with Reform
regular-web library: Generic programming for the web
repo-based-blog library and program: Blogging module using blaze html for markup
reqcatcher library: A local http server to catch the HTTP redirect
reroute library: abstract implementation of typed and untyped web routing
reserve program: Reserve reloads web applications
respond library and program: process and route HTTP requests and generate responses on top of WAI
rest-client library: Utility library for use in generated API client libraries.
rest-core library: Rest API library.
rest-example library and programs: Example project for rest
rest-gen library: Documentation and client generation from rest definition.
rest-happstack library: Rest driver for Happstack.
rest-snap library: Rest driver for Snap.
rest-types library: Silk Rest Framework Types
rest-wai library: Rest driver for WAI applications.
restful-snap library
RESTng library: A framework for writing RESTful applications.
rfc3339 library: Parse and display time according to RFC3339 (deprecated)
rivet-core library: Core library for project management tool.
robots-txt library: Parser for robots.txt
rpc-framework library and program: a remote procedure call framework
saferoute library: A simple type-safe routing library.
salvia library: Modular web application framework.
salvia-demo library and programs: Demo Salvia servers.
salvia-extras library: Collection of non-fundamental handlers for the Salvia web server.
salvia-protocol library: Salvia webserver protocol suite supporting URI, HTTP, Cookie and MIME.
salvia-sessions library: Session support for the Salvia webserver.
salvia-websocket library: Websocket implementation for the Salvia Webserver.
scalp-webhooks library and program: Test webhooks locally
scalpel library: A high level web scraping library for Haskell.
scottish library: scotty with batteries included
scotty library: Haskell web framework inspired by Ruby's Sinatra, using WAI and Warp
scotty-binding-play library: The Play Framework style data binding in Scotty.
scotty-blaze library: blaze-html integration for Scotty
scotty-cookie library: Cookie management helper functions for Scotty framework
scotty-fay library: Fay integration for Scotty.
scotty-hastache library: Easy Mustache templating support for Scotty
scotty-params-parser library: HTTP-request's query parameters parser abstraction for "scotty"
scotty-resource library: A Better way of modeling web resources.
scotty-rest library: Webmachine-style REST library for scotty
scotty-session library: Adding session functionality to scotty
scotty-tls library: TLS for Scotty
scotty-view library and program
seacat library: Small web framework using Warp and WAI
selenium library: Test web applications through a browser.
sendgrid-haskell library: Sengrid API
serv library: Dependently typed API framework
serv-wai library: Dependently typed API servers with Serv
servant library: A family of combinators for defining webservices APIs
servant-blaze library: Blaze-html support for servant
servant-client library: automatical derivation of querying functions for servant webservices
servant-csharp library: Generate servant client library for C#
servant-docs library and program: generate API docs for your servant webservice
servant-ede library and program: Combinators for rendering EDE templates in servant web applications
servant-elm library: Automatically derive Elm functions to query servant webservices.
servant-examples programs: Example programs for servant
servant-foreign library: Helpers for generating clients for servant APIs in any programming language
servant-github library: Bindings to GitHub API using servant.
servant-haxl-client library: automatical derivation of querying functions for servant webservices
servant-jquery library and program: Automatically derive (jquery) javascript functions to query servant webservices
servant-js library and program: Automatically derive javascript functions to query servant webservices.
servant-lucid library: Servant support for lucid
servant-mock library and program: Derive a mock server for free from your servant API types
servant-pandoc library: Use Pandoc to render servant API documentation
servant-pool library: ...
servant-postgresql library: Useful functions and instances for using servant with a PostgreSQL context
servant-response library: ...
servant-scotty library: Generate a web service for servant 'Resource's using scotty and JSON
servant-server library and program: A family of combinators for defining webservices APIs and serving them
servant-swagger library: Generate Swagger specification for your servant API.
servant-yaml library: Servant support for yaml
serversession library: Secure, modular server-side sessions.
serversession-backend-acid-state library: Storage backend for serversession using acid-state.
serversession-backend-persistent library: Storage backend for serversession using persistent and an RDBMS.
serversession-backend-redis library: Storage backend for serversession using Redis.
serversession-frontend-snap library: Snap bindings for serversession.
serversession-frontend-wai library: wai-session bindings for serversession.
serversession-frontend-yesod library: Yesod bindings for serversession.
servius program: Warp web server with template rendering
ses-html library: Send HTML formatted emails using Amazon's SES REST API with blaze
ses-html-snaplet library: Snaplet for the ses-html package
shadowsocks programs: A fast SOCKS5 proxy that help you get through firewalls
shake-minify library: Shake Minify Rules
shakespeare library: A toolkit for making compile-time interpolated templates
shakespeare-css library: Stick your haskell variables into css at compile time. (deprecated)
shakespeare-i18n library: A type-based approach to internationalization. (deprecated)
shakespeare-js library: Stick your haskell variables into javascript/coffeescript at compile time. (deprecated)
shakespeare-text library: Interpolation with quasi-quotation: put variables strings (deprecated)
shelduck library and program: Test webhooks locally
shine library: Declarative graphics for the browser using GHCJS
shine-varying library: FRP interface for shine using the varying package
shortcut-links library: Link shortcuts for use in text markup
shorten-strings library: Shorten a variety of string-like types adding ellipsis
shpider library: Web automation library in Haskell.
simple library and program: A minimalist web framework for the WAI server interface
simple-css library: simple binding of css and html
simple-form library: Forms that configure themselves based on type
simple-postgresql-orm library: Connector package for integrating postgresql-orm with the Simple web framework
simple-session library: Cookie-based session management for the Simple web framework
simple-templates library: A basic template language for the Simple web framework
SimpleServer library and program: A simple static file server, for when apache is overkill
sitemap library: Sitemap parser
skell library: An overly complex Haskell web framework.
skemmtun program: A MyAnimeList.net client.
slack-api library: Bindings to the Slack RTM API.
slack-notify-haskell library and program: Slack notifier for Haskell project.
slidemews program: ws convert markdown to reveal-js
slug library: Type-safe slugs for Yesod ecosystem
smartword programs: Web based flash card for Word Smart I and II vocabularies
smsaero library: SMSAero API and HTTP client based on servant library.
snap library and program: Top-level package for the Snap Web Framework
snap-accept library: Accept header branching for the Snap web framework
snap-auth-cli program: Command-line tool to manage Snap AuthManager database
snap-configuration-utilities library: Methods to manipulate Configurator objects for Snap & Snaplets
snap-core library: Snap: A Haskell Web Framework (core interfaces and types)
snap-cors library: Add CORS headers to Snap applications
snap-elm library: Serve Elm files through the Snap web framework.
snap-error-collector library: Collect errors in batches and dispatch them
snap-extras library and program: A collection of useful helpers and utilities for Snap web applications.
snap-language library: Language handling for Snap
snap-loader-dynamic library: Snap: A Haskell Web Framework: dynamic loader
snap-loader-static library: Snap: A Haskell Web Framework: static loader
snap-server library: A fast, iteratee-based, epoll-enabled web server for the Snap Framework
snap-testing library: A library for BDD-style testing with the Snap Web Framework
snap-utils library: Snap Framework utilities.
snap-web-routes library: Type safe URLs for Snap
snaplet-acid-state library: acid-state snaplet for Snap Framework
snaplet-actionlog library: Generic action log snaplet for the Snap Framework
snaplet-amqp library: Snap framework snaplet for the AMQP library
snaplet-auth-acid library: Provides an Acid-State backend for the Auth Snaplet
snaplet-coffee library: CoffeeScript for Snap, auto-compilation and pre-compilation.
snaplet-css-min library: A Snaplet for CSS minification
snaplet-environments library: ...
snaplet-fay library: Fay integration for Snap with request- and pre-compilation.
snaplet-ghcjs library: Serve javascript files compiled with GHCJS
snaplet-hasql library: A Hasql snaplet
snaplet-haxl library: Snaplet for Facebook's Haxl
snaplet-hdbc library: HDBC snaplet for Snap Framework
snaplet-hslogger library: Snap framework snaplet for the Logger API library.
snaplet-i18n library and program: snaplet-i18n
snaplet-influxdb library: Snap framework snaplet for the InfluxDB library
snaplet-mandrill library: Snap framework snaplet for the Mandrill API library.
snaplet-mongoDB library: Snap Framework MongoDB support as Snaplet
snaplet-mongodb-minimalistic library: Minimalistic MongoDB Snaplet.
snaplet-mysql-simple library: mysql-simple snaplet for the Snap Framework
snaplet-oauth library: snaplet-oauth
snaplet-persistent library: persistent snaplet for the Snap Framework
snaplet-postgresql-simple library: postgresql-simple snaplet for the Snap Framework
snaplet-postmark library: Postmark snaplet for the Snap Framework
snaplet-purescript library: Automatic (re)compilation of purescript projects
snaplet-recaptcha library: A ReCAPTCHA verification snaplet with Heist integration and connection sharing.
snaplet-redis library: Redis support for Snap Framework
snaplet-redson library: CRUD for JSON data with Redis storage
snaplet-rest library: REST resources for the Snap web framework
snaplet-sass library: Sass integration for Snap with request- and pre-compilation.
snaplet-ses-html library: Snaplet for the ses-html package
snaplet-sqlite-simple library: sqlite-simple snaplet for the Snap Framework
snaplet-stripe library: Stripe snaplet for the Snap Framework
snaplet-tasks library: ...
snaplet-typed-sessions library: Typed session snaplets and continuation-based programming for the Snap web framework
snaplet-wordpress library: A snaplet that communicates with wordpress over its api.
soap library: SOAP client tools
soap-openssl library: TLS-enabled SOAP transport (using openssl bindings)
soap-tls library: TLS-enabled SOAP transport (using tls package)
socketio library: Socket.IO server
sort-by-pinyin library: Sort simplified Chinese by PinYin
source-code-server program: The server backend for the source code iPhone app
spata library: brainless form validation
spike program: Experimental web browser
Spock library: Another Haskell web framework for rapid development
Spock-auth library: Provides authentification helpers for Spock
Spock-digestive library: Digestive functors support for Spock
Spock-lucid library: Lucid support for Spock
Spock-worker library: Background workers for Spock
spoty library: Spotify web API wrapper
sproxy program: HTTP proxy for authenticating users via Google OAuth2
static-resources library: JavaScript and Css files concat for http optimization. Now with LESS support.
stitch library: lightweight CSS DSL
streaming-wai library: Streaming Wai utilities
strio library and program: Initial project template from stack
stripe library: A Haskell implementation of the Stripe API.
stripe-core library: Stripe API for Haskell - Pure Core
stripe-haskell library: Stripe API for Haskell
stripe-http-streams library: Stripe API for Haskell - http-streams backend
sunroof-compiler library: Monadic Javascript Compiler
sunroof-examples programs: Tests for Sunroof
sunroof-server library: Monadic Javascript Compiler - Server Utilities
swagger2 library: Swagger 2.0 data model
sws program: A simple web server for serving directories, similar to weborf.
tablestorage library: Azure Table Storage REST API Wrapper
tag-stream library: streamlined html tag parser
taggy library and program: Efficient and simple HTML/XML parsing library
taggy-lens library: Lenses for the taggy html/xml parser
tagstream-conduit library: streamlined html tag parser
tasty-fail-fast library: Adds the ability to fail a tasty test suite on first test failure
tdoc library: TDoc is a typed document builder with support for (X)HTML
telegram-api library: Telegram Bot API bindings
template-hsml library: Haskell's Simple Markup Language
threepenny-gui library and programs: GUI framework that uses the web browser as a display.
tightrope library: Nice API for a Slackbot
time-http library: Parse and format HTTP/1.1 Date and Time strings
time-parsers library: Parsers for types in `time`.
time-w3c library and program: Parse, format and convert W3C Date and Time
timerep library: Parse and display time according to some RFCs (RFC3339, RFC2822, RFC822)
TinyURL library: Use TinyURL to compress URLs
tnet library: Library for encoding/decoding TNET strings for PGI
travis library: A simple client implementation using Travis CI API.
tsession library: A Transaction Framework for Web Applications
tsession-happstack library: A Transaction Framework for Happstack
twhs library and program: CLI twitter client.
twilio library: Twilio REST API library for Haskell
twiml library: TwiML library for Haskell
twitter-conduit library: Twitter API package with conduit interface and Streaming API support.
twitter-enumerator library: Twitter API package with enumerator interface and Streaming API support.
twitter-feed library: Client for fetching Twitter timeline via Oauth
twitter-types library: Twitter JSON parser and types
twitter-types-lens library: Twitter JSON types (lens powered)
typed-wire library and program: Language-independent type-safe communication
typed-wire-utils library: Haskell utility library required for code generated by typed-wire compiler
ua-parser library: A library for parsing User-Agent strings, official Haskell port of ua-parser
uber library: Uber client for Haskell
uploadcare library: Haskell client for Uploadcare.
uri-bytestring library: Haskell URI parsing as ByteStrings
uri-encode library and programs: Unicode aware uri-encoding.
uri-template library and program: URI template library for Haskell
url library: A library for working with URLs.
url-generic library: Parse/format generic key/value URLs from record data types.
UrlDisp library: Url dispatcher. Helps to retain friendly URLs in web applications.
urlencoded library and program: Generate or process x-www-urlencoded data
urlpath library: Painfully simple URL deployment.
URLT library: Library for maintaining correctness of URLs within an application.
users library: A library simplifying user management for web applications
users-postgresql-simple library: A PostgreSQL backend for the users package
users-test library: Library to test backends for the users library
uzbl-with-source library: Utility function for reading a source of loaded uzbl pages.
validate-input library: Input validation combinator library
validations library: A nice way to define field validations in Haskell.
vcatt library and program: Recursively check that a directory is under version control.
vcs-web-hook-parse library: Parse development platform web hook messages.
vinyl-json library: Provide json instances automagically to vinyl types
vinyl-plus library: Vinyl records utilities
vk-aws-route53 library: Amazon Route53 DNS service plugin for the aws package.
VKHS library and program: Provides access to Vkontakte social network via public API
wai library: Web Application Interface.
wai-accept-language library and program: Rewrite based on Accept-Language header
wai-app-file-cgi library: File/CGI/Rev Proxy App of WAI
wai-app-static library and program: WAI application for static serving
wai-conduit library: conduit wrappers for WAI
wai-cors library: CORS for WAI
wai-devel library and program: A web server for the development of WAI compliant web applications.
wai-digestive-functors library: Helpers to bind digestive-functors onto wai requests
wai-dispatch library: Nice wrapper around yesod-routes for use with WAI
wai-eventsource library: WAI support for server-sent events (deprecated)
wai-extra library: Provides some basic WAI handlers and middleware.
wai-frontend-monadcgi library: Run CGI apps on WAI.
wai-handler-devel library and programs: WAI server that automatically reloads code after modification. (deprecated)
wai-handler-fastcgi library: Wai handler to fastcgi
wai-handler-launch library: Launch a web app in the default browser.
wai-handler-scgi library: Wai handler to SCGI (deprecated)
wai-handler-snap library: Web Application Interface handler using snap-server. (deprecated)
wai-handler-webkit library: Turn WAI applications into standalone GUIs using QtWebkit.
wai-hastache library: Nice wrapper around hastache for use with WAI
wai-hmac-auth library: hmac authentication tools for WAI apps
wai-lens library: Lenses for WAI
wai-lite library: ...
wai-logger library: A logging system for WAI
wai-logger-prefork library: A logging system for preforked WAI apps
wai-middleware-cache library: Caching middleware for WAI.
wai-middleware-cache-redis library: Redis backend for wai-middleware-cache
wai-middleware-caching library: WAI Middleware to cache things
wai-middleware-caching-lru library: Initial project template from stack
wai-middleware-caching-redis library: Cache Wai Middleware using Redis backend
wai-middleware-catch library: Wai error catching middleware
wai-middleware-content-type library: A simple WAI library for responding with content.
wai-middleware-crowd library and program: Middleware and utilities for using Atlassian Crowd authentication
wai-middleware-etag library: WAI ETag middleware for static files
wai-middleware-gunzip library: WAI middleware to unzip request bodies
wai-middleware-headers library: cors and addHeaders for WAI
wai-middleware-hmac library: HMAC Authentication Middleware for WAI
wai-middleware-hmac-client library and program: WAI HMAC Authentication Middleware Client
wai-middleware-metrics library: A WAI middleware to collect EKG request metrics
wai-middleware-preprocessor library: WAI middleware for preprocessing static files
wai-middleware-route library: Wai dispatch middleware
wai-middleware-static library: WAI middleware that serves requests to static files.
wai-middleware-static-caching library: WAI middleware that serves requests to static files.
wai-middleware-throttle library: WAI Middleware for Request Throttling
wai-middleware-verbs library and program: Route different middleware responses based on the incoming HTTP verb.
wai-predicates library: WAI request predicates
wai-route library: Minimalistic, efficient routing for WAI
wai-router library: Provides basic routing on URL paths for WAI.
wai-routing library: Declarative routing for WAI.
wai-session library: Flexible session middleware for WAI
wai-session-alt library: An alternative session middleware for WAI.
wai-session-clientsession library: Session store based on clientsession
wai-session-postgresql library: PostgreSQL backed Wai session store
wai-session-tokyocabinet library: Session store based on Tokyo Cabinet
wai-static-cache library: A simple cache for serving static files in a WAI middleware
wai-static-pages library: generate static html pages from a WAI application
wai-test library: Unit test framework (built on HUnit) for WAI applications. (deprecated)
wai-thrift library: Thrift transport layer for Wai
wai-throttler library: Wai middleware for request throttling
wai-transformers library: Simple parameterization of Wai's Application type
wai-util library: Collection of utility functions for use with WAI
wai-websockets library and program: Provide a bridge between WAI and the websockets package.
waitra library and program: A very simple Wai router
warp library: A fast, light-weight web server for WAI applications.
warp-static program: Static file server based on Warp and wai-app-static (deprecated)
warp-tls library: HTTP over TLS support for Warp via the TLS package
WashNGo library and programs: WASH is a family of EDSLs for programming Web applications in Haskell.
web-css library: Simple functions for CSS.
web-encodings library and program: Encapsulate multiple web encoding in a single package. (deprecated)
web-fpco library: Wrappers for web frameworks to ease usage with the FP Complete environment.
web-mongrel2 library: Bindings for the Mongrel2 web server.
web-page library and program: Monoidally construct web pages
web-plugins library: dynamic plugin system for web applications
web-routes library: portable, type-safe URL routing
web-routes-boomerang library: Library for maintaining correctness and composability of URLs within an application.
web-routes-happstack library: Adds support for using web-routes with Happstack
web-routes-hsp library: Adds XMLGenerator instance for RouteT monad
web-routes-mtl library: Extends web-routes with mtl-based MonadIO / MonadTrans RouteT instances
web-routes-quasi library and program: ...
web-routes-regular library: portable, type-safe URL routing
web-routes-th library: Support for deriving PathInfo using Template Haskell
web-routes-transformers library: Extends web-routes with some transformers instances for RouteT
web-routes-wai library: Library for maintaining correctness of URLs within an application.
web-routing library: simple routing library
webapi library: WAI based library for web api
webapp library: Haskell web app framework based on WAI & Warp
WebCont library: Continuation based web programming for Happstack
webcrank library: Webmachine inspired toolkit for building http applications and services.
webcrank-dispatch library: A simple request dispatcher.
webcrank-wai library: Build a WAI Application from Webcrank Resources
webdriver library: a Haskell client for the Selenium WebDriver protocol
webdriver-angular library: Webdriver actions to assist with testing a webpage which uses Angular.Js
webdriver-snoy library: a Haskell client for the Selenium WebDriver protocol (deprecated)
webfinger-client library: WebFinger client library
webify program: webfont generator
websnap program: Transforms URLs to PNGs
webwire library: Functional reactive web framework
welshy library: Haskell web framework (because Scotty had trouble yodeling)
Wheb library: The frictionless WAI Framework
wheb-redis library: Redis connection for Wheb
wheb-strapped library: Strapped templates for Wheb
windowslive library and program: Implements Windows Live Web Authentication and Delegated Authentication
witty program: A network server to show bottlenecks of GHC
wreq library and program: An easy-to-use HTTP client library.
wreq-sb library and program: An easy-to-use HTTP client library.
WURFL library: Convert the WURFL file into a Parsec parser
xhtml library: An XHTML combinator library
xhtml-combinators library: Fast and easy to use XHTML combinators.
xing-api library and programs: Wrapper for the XING API, v1.
xml-to-json library and program: Library and command line tool for converting XML files to json
xml-to-json-fast library and program: Fast, light converter of xml to json capable of handling huge xml files
xss-sanitize library: sanitize untrusted HTML to prevent XSS attacks
Yablog program: A simple blog engine powered by Yesod.
yackage programs: Personal Hackage replacement for testing new packages.
yahoo-web-search library: Yahoo Web Search Services
yaml library and programs: Support for parsing and rendering YAML documents.
yesod library: Creation of type-safe, RESTful web applications.
yesod-angular library: Angular JS integratoin
yesod-angular-ui library: Angular Helpers
yesod-auth library: Authentication for Yesod.
yesod-auth-account library: An account authentication plugin for Yesod
yesod-auth-account-fork library: An account authentication plugin for Yesod
yesod-auth-basic library: Yesod Middleware for HTTP Basic Authentication
yesod-auth-bcrypt library: BCrypt salted and hashed passwords in a database as auth for yesod
yesod-auth-deskcom library: Desk.com remote authentication support for Yesod apps.
yesod-auth-fb library: Authentication backend for Yesod using Facebook.
yesod-auth-hashdb library: Authentication plugin for Yesod.
yesod-auth-kerberos library: Kerberos Authentication for Yesod.
yesod-auth-ldap library: LDAP Authentication for Yesod.
yesod-auth-ldap-mediocre library: Very simlple LDAP auth for yesod
yesod-auth-ldap-native library: Yesod LDAP authentication plugin
yesod-auth-oauth library: OAuth Authentication for Yesod.
yesod-auth-oauth2 library and program: OAuth 2.0 authentication plugins
yesod-auth-pam library: Provides PAM authentication module
yesod-auth-smbclient library: Authentication plugin for Yesod using smbclient
yesod-auth-zendesk library: Zendesk remote authentication support for Yesod apps.
yesod-bin programs: The yesod helper executable.
yesod-bootstrap library: Bootstrap widgets for yesod
yesod-comments library: A generic comments interface for a Yesod application
yesod-content-pdf library: PDF Content Type for Yesod
yesod-continuations library and program: Continuations for Yesod
yesod-core library: Creation of type-safe, RESTful web applications.
yesod-crud library: Generic administrative CRUD operations as a Yesod subsite
yesod-crud-persist library: Flexible CRUD subsite usable with Yesod and Persistent.
yesod-csp library: Add CSP headers to Yesod apps
yesod-datatables library: Yesod plugin for DataTables (jQuery grid plugin)
yesod-default library: Default config and main functions for your yesod application (deprecated)
yesod-dsl library and program: DSL for generating Yesod subsite to manage an RDBMS;
yesod-eventsource library: Server-sent events support for Yesod apps.
yesod-examples programs: Example programs using the Yesod Web Framework. (deprecated)
yesod-fay library: Utilities for using the Fay Haskell-to-JS compiler with Yesod.
yesod-fb library: Useful glue functions between the fb library and Yesod.
yesod-form library: Form handling support for Yesod Web Framework
yesod-form-json library: Extension for Yesod web framework to handle JSON requests as applicative forms
yesod-form-richtext library: Various rich-text WYSIWYG editors for Yesod forms.
yesod-gitrepo library: Host content provided by a Git repo
yesod-goodies library: A collection of various small helpers useful in any yesod application.
yesod-job-queue library and program: Background jobs library for Yesod.
yesod-json library: Generate content for Yesod using the aeson package. (deprecated)
yesod-links library: A typeclass which simplifies creating link widgets throughout your site
yesod-lucid library: Lucid support for Yesod
yesod-mangopay library and program: Yesod library for MangoPay API access
yesod-markdown library: Tools for using markdown in a yesod application
yesod-newsfeed library: Helper functions and data types for producing News feeds.
yesod-paginate library: Pagination for Yesod sites.
yesod-pagination library: Pagination in Yesod
yesod-paginator library: A pagination approach for yesod
yesod-persistent library: Some helpers for using Persistent from Yesod.
yesod-platform library: Meta package for Yesod (deprecated)
yesod-pnotify library and program: Yet another getMessage/setMessage using pnotify jquery plugins
yesod-pure library: Yesod in pure Haskell: no Template Haskell or QuasiQuotes (deprecated)
yesod-purescript library: PureScript integration for Yesod
yesod-raml library: RAML style route definitions for Yesod
yesod-raml-bin program: The raml helper executable.
yesod-raml-docs library: A html documentation generator library for RAML.
yesod-raml-mock library: A mock-handler generator library from RAML.
yesod-recaptcha library: Dead simple support for reCAPTCHA on Yesod applications.
yesod-routes library: Efficient routing for Yesod. (deprecated)
yesod-routes-flow library: Generate Flow routes for Yesod
yesod-routes-typescript library: generate TypeScript routes for Yesod
yesod-rst library: Tools for using reStructuredText (RST) in a yesod application
yesod-sass library: A simple quasiquoter to include sass code in yesod
yesod-sitemap library: Generate XML sitemaps.
yesod-static library: Static file serving subsite for Yesod Web Framework.
yesod-static-angular library and programs: Yesod generators for embedding AngularJs code into yesod-static at compile time
yesod-table library: HTML tables for Yesod
yesod-test library: integration testing for WAI/Yesod Applications
yesod-test-json library: Utility functions for testing JSON web services written in Yesod
yesod-tls library: Provides main functions using warp-tls for yesod projects
yesod-transloadit library: Transloadit support for Yesod
yesod-vend library and program: Simple CRUD classes for easy view creation for Yesod
yesod-websockets library: WebSockets support for Yesod
yesod-websockets-extra library: Extension to yesod-websockets
youtube programs: Upload video to YouTube via YouTube API
yql library and program: A YQL engine to execute Open Data Tables
yuiGrid library: Grids defined by layout hints and implemented on top of Yahoo grids.
zerobin library and programs: Post to 0bin services

Web Server

hws program: Simple Haskell Web Server

Web Yesod

shakespeare-babel library: compile es2015

WebDriver

webdriver library: a Haskell client for the Selenium WebDriver protocol

Webframework

olwrapper library and program: An OpenLayers JavaScript Wrapper and Webframework with snaplet-fay

Welcome

manatee-welcome library and program: Welcome module to help user play Manatee quickly.

Wiki

claferwiki library: A wiki-based IDE for literate modeling with Clafer

Workflow

Workflow library: Workflow patterns over a monad for thread state logging & recovery

X11

xcffib library and program: A cffi-based python binding for X

XFCE

xfconf library and programs: FFI bindings to xfconf

XML

atom-conduit library: Streaming parser/renderer for the Atom 1.0 standard (RFC 4287).
aws-sdk-xml-unordered library: The xml parser for aws-sdk package
cmathml3 library and program: Data model, parser, serialiser and transformations for Content MathML 3
concrete-relaxng-parser program: A parser driven by a standard RELAX NG schema with concrete syntax extensions.
dom-parser library: Simple monad for parsing DOM
dtd-text library: Parse and render XML DTDs
dtd-types library: Basic types for representing XML DTDs
expat-enumerator library: Enumerator-based API for Expat
fast-tagsoup library: Fast parser for tagsoup package
fast-tagsoup-utf8-only library: Fast parser for tagsoup package
formlets library: Formlets implemented in Haskell
formlets-hsp library: HSP support for Formlets
FpMLv53 library: A binding for the Financial Products Markup Language (v5.3)
generic-xml library: Marshalling Haskell values to/from XML
generic-xmlpickler library: Generic generation of HXT XmlPickler instances using GHC Generics.
google-mail-filters library: Write GMail filters and output to importable XML
HaXml library and programs: Utilities for manipulating XML documents
hexpat library: XML parser/formatter based on expat
hexpat-iteratee library: Chunked XML parsing using iteratees
hexpat-lens library: Lenses for Hexpat.
hexpat-pickle library: XML picklers based on hexpat, source-code-similar to those of the HXT package
hexpat-pickle-generic library: Picklers for de/serialising Generic data types to and from XML
hexpat-tagsoup library: Parse (possibly malformed) HTML to hexpat tree
html-tokenizer library: An "attoparsec"-based HTML tokenizer
HXQ library: A Compiler from XQuery to Haskell
hxt library: A collection of tools for processing XML with Haskell.
hxt-binary library: Serialisation and deserialisation of HXT XmlTrees.
hxt-cache library: Cache for HXT XML Documents and other binary data
hxt-css library and program: CSS selectors for HXT
hxt-curl library: LibCurl interface for HXT
hxt-expat library: Expat parser for HXT
hxt-extras library: Extra functions for HXT
hxt-filter library: A collection of tools for processing XML with Haskell (Filter variant).
hxt-http library: Interface to native Haskell HTTP package HTTP
hxt-pickle-utils library: Utility functions for using HXT picklers.
hxt-relaxng library: The HXT RelaxNG validator
hxt-tagsoup library: TagSoup parser for HXT
hxt-xpath library: The XPath modules for HXT.
hxt-xslt library: The XSLT modules for HXT.
hxthelper library: Helper functions for HXT
islink library: Check if an HTML element is a link
libxml library: Binding to libxml2
libxml-enumerator library: Enumerator-based API for libXML's SAX interface
libxml-sax library: Bindings for the libXML2 SAX interface
libxslt library: Binding to libxslt
musicxml library: MusicXML format encoded as Haskell type and functions of reading and writting.
opml-conduit library: Streaming parser/renderer for the OPML 2.0 format.
parsec-tagsoup library: Parsec parsers for Tagsoup tag streams
plist library: Generate and parse Mac OS X property list format
polysoup library: Online XML parsing with polyparse and tagsoup
property-list library: Apple property list parser
pugixml library: pugixml binding.
pxsl-tools program: Parsimonious XML Shorthand Language--to-XML compiler
quickcheck-relaxng library: Generate RelaxNG-constrained XML documents for QuickCheck
regular-xmlpickler library: Generic generation of HXT XmlPickler instances using Regular.
rss-conduit library: Streaming parser/renderer for the RSS 2.0 standard.
selectors library: CSS Selectors for DOM traversal
tagchup library and programs: alternative package for processing of tag soups
tagsoup library and program: Parsing and extracting information from (possibly malformed) HTML/XML documents
tagsoup-ht library and programs: alternative parser for the tagsoup package
tagsoup-parsec library: Tokenizes Tag, so [ Tag ] can be used as parser input.
text-xml-generic library: Serialize Data to XML (strings).
tofromxml library: Reading and writing Haskell data from and to XML
twiml library: TwiML library for Haskell
wraxml library and program: Lazy wrapper to HaXML, HXT, TagSoup via custom XML tree structure
wsdl library: WSDL parsing in Haskell
xhtml library: An XHTML combinator library
xml library: A simple XML library.
xml-basic library: Basics for XML/HTML representation and processing
xml-conduit library: Pure-Haskell utilities for dealing with XML with the conduit package.
xml-conduit-parse library: Streaming XML parser based on conduits.
xml-enumerator library: Pure-Haskell utilities for dealing with XML with the enumerator package. (deprecated)
xml-enumerator-combinators library and program: Parser combinators for xml-enumerator and compatible XML parsers.
xml-extractors library: Extension to the xml package to extract data from parsed xml
xml-helpers library: Some useful helper functions for the xml library.
xml-lens library: Lenses, traversals, and prisms for xml-conduit
xml-monad library: Monadic extensions to the xml package.
xml-picklers library: XML picklers based on xml-types, ported from hexpat-pickle
xml-pipe library: XML parser which uses simple-pipe
xml-query library: A parser-agnostic declarative API for querying XML-documents
xml-query-xml-conduit library: A binding for the "xml-query" and "xml-conduit" libraries
xml-query-xml-types library: An interpreter of "xml-query" queries for the "xml-types" documents
xml-to-json library and program: Library and command line tool for converting XML files to json
xml-to-json-fast library and program: Fast, light converter of xml to json capable of handling huge xml files
xml-types library: Basic types for representing XML
xml2html library: blaze-html instances for xml-conduit types (deprecated)
xmlgen library: Fast XML generation library
xsd library: XML Schema data structures

XMonad

xmonad-entryhelper library: XMonad config entry point wrapper
xmonad-screenshot library: Workspaces screenshooting utility for XMonad.
xmonad-windownames library: A library to automatically put named windows into the DynamicLog.

Yampa

YFrob library: Yampa-based library for programming robots

Yesod

cookie library: HTTP cookie parsing and rendering
corebot-bliki library and program: A bliki written using yesod. Uses pandoc to process files stored in git.
css-text library: CSS parser and renderer.
elm-yesod library: The Elm language Yesod compatibility module.
friendly-time library: Print time information in friendly ways
hamlet library: Haml-like template files that are compile-time checked (deprecated)
keter library and program: Web application deployment manager, focusing on Haskell web frameworks
lmonad-yesod library: LMonad for Yesod integrates LMonad's IFC with Yesod web applications.
path-pieces library: Components of paths.
persistent library: Type-safe, multi-backend data serialization.
persistent-audit library and program: Parses a Persist Model file and produces Audit Models
persistent-mysql library: Backend for the persistent library using MySQL database server.
persistent-odbc library and program: Backend for the persistent library using ODBC
persistent-postgresql library: Backend for the persistent library using postgresql.
persistent-sqlite library and program: Backend for the persistent library using sqlite3.
persistent-template library: Type-safe, non-relational, multi-backend persistence.
pool library: Thread-safe resource pools. (deprecated)
pool-conduit library: Resource pool allocations via ResourceT. (deprecated)
shakespeare library: A toolkit for making compile-time interpolated templates
shakespeare-css library: Stick your haskell variables into css at compile time. (deprecated)
shakespeare-i18n library: A type-based approach to internationalization. (deprecated)
shakespeare-js library: Stick your haskell variables into javascript/coffeescript at compile time. (deprecated)
shakespeare-text library: Interpolation with quasi-quotation: put variables strings (deprecated)
shorten-strings library: Shorten a variety of string-like types adding ellipsis
slug library: Type-safe slugs for Yesod ecosystem
wai-app-file-cgi library: File/CGI/Rev Proxy App of WAI
wai-app-static library and program: WAI application for static serving
wai-cors library: CORS for WAI
wai-logger library: A logging system for WAI
wai-logger-prefork library: A logging system for preforked WAI apps
wai-test library: Unit test framework (built on HUnit) for WAI applications. (deprecated)
wai-websockets library and program: Provide a bridge between WAI and the websockets package.
warp library: A fast, light-weight web server for WAI applications.
warp-tls library: HTTP over TLS support for Warp via the TLS package
warp-tls-uid library and program: set group and user id before running server
web-routes-quasi library and program: ...
yackage programs: Personal Hackage replacement for testing new packages.
yesod library: Creation of type-safe, RESTful web applications.
yesod-auth library: Authentication for Yesod.
yesod-auth-bcrypt library: BCrypt salted and hashed passwords in a database as auth for yesod
yesod-auth-deskcom library: Desk.com remote authentication support for Yesod apps.
yesod-auth-hashdb library: Authentication plugin for Yesod.
yesod-auth-kerberos library: Kerberos Authentication for Yesod.
yesod-auth-ldap library: LDAP Authentication for Yesod.
yesod-auth-ldap-native library: Yesod LDAP authentication plugin
yesod-auth-oauth library: OAuth Authentication for Yesod.
yesod-auth-pam library: Provides PAM authentication module
yesod-auth-smbclient library: Authentication plugin for Yesod using smbclient
yesod-auth-zendesk library: Zendesk remote authentication support for Yesod apps.
yesod-bin programs: The yesod helper executable.
yesod-comments library: A generic comments interface for a Yesod application
yesod-core library: Creation of type-safe, RESTful web applications.
yesod-datatables library: Yesod plugin for DataTables (jQuery grid plugin)
yesod-default library: Default config and main functions for your yesod application (deprecated)
yesod-dsl library and program: DSL for generating Yesod subsite to manage an RDBMS;
yesod-eventsource library: Server-sent events support for Yesod apps.
yesod-examples programs: Example programs using the Yesod Web Framework. (deprecated)
yesod-fay library: Utilities for using the Fay Haskell-to-JS compiler with Yesod.
yesod-form library: Form handling support for Yesod Web Framework
yesod-form-json library: Extension for Yesod web framework to handle JSON requests as applicative forms
yesod-goodies library: A collection of various small helpers useful in any yesod application.
yesod-json library: Generate content for Yesod using the aeson package. (deprecated)
yesod-links library: A typeclass which simplifies creating link widgets throughout your site
yesod-lucid library: Lucid support for Yesod
yesod-markdown library: Tools for using markdown in a yesod application
yesod-newsfeed library: Helper functions and data types for producing News feeds.
yesod-paginate library: Pagination for Yesod sites.
yesod-paginator library: A pagination approach for yesod
yesod-persistent library: Some helpers for using Persistent from Yesod.
yesod-platform library: Meta package for Yesod (deprecated)
yesod-pnotify library and program: Yet another getMessage/setMessage using pnotify jquery plugins
yesod-pure library: Yesod in pure Haskell: no Template Haskell or QuasiQuotes (deprecated)
yesod-purescript library: PureScript integration for Yesod
yesod-raml library: RAML style route definitions for Yesod
yesod-raml-bin program: The raml helper executable.
yesod-raml-docs library: A html documentation generator library for RAML.
yesod-raml-mock library: A mock-handler generator library from RAML.
yesod-routes library: Efficient routing for Yesod. (deprecated)
yesod-rst library: Tools for using reStructuredText (RST) in a yesod application
yesod-s3 library: Simple Helper Library for using Amazon's Simple Storage Service (S3) with Yesod
yesod-sitemap library: Generate XML sitemaps.
yesod-static library: Static file serving subsite for Yesod Web Framework.
yesod-tableview library: Table view for Yesod applications
yesod-test library: integration testing for WAI/Yesod Applications
yesod-text-markdown library: Yesod support for Text.Markdown.
yesod-tls library: Provides main functions using warp-tls for yesod projects
yesod-vend library and program: Simple CRUD classes for easy view creation for Yesod

Yi

dynamic-state library: Optionally serializable dynamic state keyed by type
yi-emacs-colours library: Simple mapping from colour names used in emacs to Color
yi-language library: Collection of language-related Yi libraries.
yi-rope library: A rope data structure used by Yi
yi-snippet library: Snippet support for Yi

Zeromq

patterns library: Common patterns in message-oriented applications

Zippers

zippers library: Traversal based zippers

Unclassified

aeson-json-ast library: Integration layer for "json-ast" and "aeson"
aeson-serialize library: Simple serialization functions for aeson types
almost-fix library: Recurse while a predicate is satisfied
ar-timestamp-wiper library and program: Wipes time stamps from .a files (like ar -D)
argon2 library: ...
arithmatic library: Basic arithmatic in haskell
average library: An average (arithmetic mean) monoid.
backdropper library and program: Rotates backdrops for X11 displays using Imagemagic.
base-unicode-symbols library: Unicode alternatives for common functions and operators
bein programs: Bein is a provenance and workflow management system for bioinformatics.
black-jewel program: The pirate bay client.
blaze library: None
blazeMarker library: ...
bools library: None
cabalg library and program: alias for cabal install from given git repo
calc program: A small compiler for arithmetic expressions.
canteven-config library: A pattern for configuring programs.
cgi-undecidable library: Undecidable instances for the cgi package.
codemonitor program: Tool that automatically runs arbitrary commands when files change on disk.
cognimeta-utils library and program: Utilities for Cognimeta products (such as perdure). API may change often.
constraint-classes library: Prelude classes using ConstraintKinds
containers-unicode-symbols library: Unicode alternatives for common functions and operators
continuum library and programs
continuum-client library
cpuid program: Binding for the cpuid machine instruction on x86 compatible processors
cursedcsv program: Terminal tool for viewing tabular data
dag library: Compile-time, type-safe directed acyclic graphs.
Dao library and program: Dao is meta programming language with its own built-in interpreted language, ...
dao library and program: Dao is meta programming language with its own built-in interpreted language, ...
data-extra library: None
Deadpan-DDP library and program: Write clients for Meteor's DDP Protocol
definitive-sound library: A definitive package to handle sound and play it back
dependent-sum-template library: Template Haskell code to generate instances of classes in dependent-sum package
derangement library: Find derangements of lists
diplomacy library: The board game Diplomacy, spoken in Haskell
diplomacy-server program: Play Diplomacy over HTTP
download-media-content program: Simple tool to download images from RSS feeds (e.g. Flickr, Picasa)
eithers library: None
ekg-carbon library: An EKG backend to send statistics to Carbon (part of Graphite monitoring tools)
elm-repl program: a REPL for Elm
engine-io-snap library
exif library: A Haskell binding to a subset of libexif
Extra library: A grab bag of modules.
FastxPipe library: Fasta and Fastq streaming
feed2lj program: (unsupported)
fences library: To be written
final library: utility to add extra safety to monadic returns
flow2dot library and program: Library and binary to generate sequence/flow diagrams from plain text source
format-status program: A utility for writing the date to dzen2.
fpipe library: F#-style composition and application
frown program: LALR(k) parser generator
game-of-life program: Conway's Game of Life
generic-lucid-scaffold library: General-purpose web page scaffold for Lucid.
ghc-server library: None
git-freq program: A Git subcommand to show total addition, deletion per file
gitdo program: Create Github issues out of TODO comments in code
google-drive library: Google Drive API access
google-oauth2 library: Google OAuth2 token negotiation
gravatar library: Generate Gravatar image URLs
hackertyper program: "Hack" like a programmer in movies and games!
happs-hsp library
hask-home programs: Generate homepages for cabal packages
haskell-course-preludes library: ...
haxr-th library: Automatic deriving of XML-RPC structs for Haskell records.
heroku-persistent library: Parse DATABASE_URL into configuration types for Persistent
hmarkup library: Simple wikitext-like markup format implementation.
Hmpf program: An MPD client designed for a Home Theatre PC
hnop program
holey-format library: None
hoodle library and program: Executable for hoodle
hoodle-core library: Core library for hoodle
hoodle-extra programs: extra hoodle tools
hoodle-publish library and program: publish hoodle files as a static web site
hs-re library: Easy to use Regex
hsbencher-codespeed library: Backend for uploading benchmark data to CodeSpeed
hsbencher-fusion library and programs: Backend for uploading benchmark data to Google Fusion Tables.
hsConfigure library: By using this package, you can make application configurable.
http-response-decoder library: Declarative DSL for parsing an HTTP response
huzzy library: Fuzzy logic library with support for T1, IT2, GT2.
hworker library: A reliable at-least-once job queue built on top of redis.
hxournal library and program: A pen notetaking program written in haskell
ihaskell-widgets library: IPython standard widgets for IHaskell.
infernu library and programs: Type inference and checker for JavaScript (experimental)
infinity program
ircbouncer library: None
ispositive library: Positive integers test.
json-ast library: Universal JSON AST datastructure
json-ast-json-encoder library: Encoders of JSON AST
json-ast-quickcheck library: Compatibility layer for "json-ast" and "QuickCheck"
kibro library: None
laika library and program: Minimalistic type-checked compile-time template engine
LambdaINet program: Graphical Interaction Net Evaluator for Optimal Evaluation
lhslatex program: Tool for using pdflatex with .lhs files
ll-picosat library
locked-poll library and program: Very simple poll lock
logging-effect library: A mtl-style monad transformer for general purpose & compositional logging
loopy program: Find all biological feedback loops within an ecosystem graph.
LRU library: Implements an LRU data structure
lsystem program: Paint an L-System Grammar
lucid-foundation library: Basic Zurb Foundation API in Lucid
matcher library: A composable abstraction for checking or converting a context value
metaplug library: a tiny ghc api wrapper
MissingH library: Large utility library
MissingPy library: Haskell interface to Python
msu program: Monitor Setup Utility
MTGBuilder program: Builds decks out of a meta
music-util program: Utility for developing the Music Suite.
myTestlll library: None
network-carbon library: A Haskell implementation of the Carbon protocol (part of the Graphite monitoring tools)
nicovideo-translator library and program: Nico Nico Douga (ニコニコ動画) Comment Translator
nixfromnpm library and program: Generate nix expressions from npm packages.
nums library: None
ObjectIO library
OneTuple library: Singleton Tuple
packedstring library: (Deprecated) Packed Strings.
padKONTROL library: Controlling padKONTROL native mode
parallel-tasks library
parsedate library: Data and time parsing for CalendarTime
path-extra library: Chris Done's path library, enriched with URL-related goodies.
paymill library: This is an unofficial client for the Paymill API
pointfree library and program: Tool for refactoring expressions into pointfree form
positive library: Positive integers.
postgresql-simple-sop library: Generic functions for postgresql-simple
progressive program: Multilabel classification model which learns sequentially (online).
Proper library and programs: An implementation of propositional logic in Haskell
pseudo-trie library: A tagged rose-tree with short circuited unique leaves
rdtsc library: Binding for the rdtsc machine instruction
rebase library: A more progressive alternative to the "base" package
refh program: A command-line tool for pasting to https://www.refheap.com
rivet program: A project management tool for Haskell applications.
rivet-migration library: Postgresql migration support for project management tool.
rivet-simple-deploy library: Basic deployment support for project management tool.
rlist library: Lists with cheap snocs
rss library: A library for generating RSS 2.0 feeds.
Safe library: Library for safe (pattern match free) functions
safe library: Library of safe (exception free) functions
satchmo-minisat library: minisat driver as backend for satchmo
SDL library: Binding to libSDL
SDL-gfx library: Binding to libSDL_gfx
SDL-image library: Binding to libSDL_image
SDL-mixer library: Binding to libSDL_mixer
SDL-mpeg library: Binding to the SMPEG library
SDL-ttf library: Binding to libSDL_ttf
SDL2-ttf library: Binding to libSDL-ttf
sdl2-ttf library and program: Binding to libSDL2-ttf
selfrestart library: Restarts the current executable (on binary change)
semver-range library: An implementation of semver and semantic version ranges.
sensenet program: Distributed sensor network for the raspberry pi
senza library: None
SeqAlign library: Sequence Alignment
servant-cassava library: Servant CSV content-type for cassava
set-with library: Set of elements sorted by a different data type.
setdown program: Treating files as sets to perform rapid set manipulation.
shared-memory library: POSIX shared memory
Shrub library: 4-way trie fuzzy search
snap-app library: None
socket-io library
solr library: A minimal Solr client library
sparser library: Lightweight parsing library based on partial functions.
Sprig library: Binding to Sprig
sr-extra library: A grab bag of modules.
stash library: To be written
streaming-histogram library
strictify program: Find a local optimum of strictness annotations.
string library: None
testPkg program: Small test package
texts library: None
Theora library
throttle library: None
timberc program: The Timber Compiler.
toml library
total-alternative library: Alternative interface for total versions of partial function on the Prelude.
twentefp-eventloop-trees library: ...
twentefp-rosetree library: RoseTree type and show functions for lab assignment of University of Twente.
twentefp-trees library: ...
type-int library: Type Level 2s- and 16s- Complement Integers
unbounded-delays-units library: Thread delays and timeouts using proper time units
unfoldable-restricted library: An alternative to the Unfoldable typeclass
unicode-symbols library: Unicode alternatives for common functions and operators
unit-constraint library: Extremely simple typeclass
Useful library: Some useful functions and shorthands.
validate library: None
verdict library and program: Validation framework
verdict-json library and program: JSON instances and JSON Schema for verdict
webkit-javascriptcore library: JavaScriptCore FFI from webkitgtk
webkitgtk3-javascriptcore library: JavaScriptCore FFI from webkitgtk
webpage library: Organized and simple web page scaffold for blaze and lucid
wordcloud library: None
xkcd program: Downloads the most recent xkcd comic.
xournal-convert library and program: convert utility for xoj files
xslt library: Binding to libxslt
yesod-gitrev library: A subsite for displaying git information.
yesod-worker library: Drop-in(ish) background worker system for Yesod apps
yjtools library: some tools for Monad, List, Tuple and so on.
Zora library: Graphing library wrapper + assorted useful functions