Twitter, Inc.

Heron is a realtime, distributed, fault-tolerant stream processing engine from Twitter

A Scala API for Cascading

A fault tolerant, protocol-agnostic RPC system

Wonderful reusable code from Twitter

Manages application of security headers with many safe defaults

Streaming MapReduce with Scalding and Storm

Experimental Scala compiler focused on compilation speed

A listing of open source efforts at Twitter on GitHub

A library to implement asynchronous dependency graphs for services in Java

Twitter Text Libraries

Fast, testable, Scala services built on Twitter-Server and Finagle

Twitter-Server defines a template from which services at Twitter are built

A Thrift parser/generator

The Twitter OSS Project Builder

Cache Commons

Abstract Algebra for Scala

Ruby implementation of the ICU (International Components for Unicode) that uses the Common Locale Data Repository to format dates, plurals, and more.

Scala extensions for the Kryo serialization library

A fast, light-weight proxy for memcached and redis

Twitter Kit is a native SDK to include Twitter content inside mobile apps.

The official Twitter plugin for WordPress. Embed Twitter content and grow your audience on Twitter.

Vireo is a lightweight and versatile video processing library written in C++11

Twitter Kit for Android

Repository for Twitter Open Source Decks

Twitter common libraries for python and the JVM

OAuth-enabled curl for the Twitter API

Lessons in the Fundamentals of Scala