Open Source at Twitter

Working with and contributing to the open source community

Open Source Projects
Twitter engineers use, contribute to and release a lot of open source software. We are thankful to work with a variety of projects and communities.
Community
Twitter supports a number of open source organizations and communities with contributions or official membership.
Contributors
We are thankful to everyone who has contributed to our projects.

Featured Projects

cascading

Cascading is a Java application framework that enables typical developers to quickly and easily develop rich Data Analytics and Data...

Algebird

Abstract algebra for Scala. This code is targeted at building aggregation systems (via Scalding or Storm). It was originally developed...

Snowflake

Snowflake is a network service for generating unique ID numbers at high scale with some simple guarantees.

hRaven

hRaven collects run time data and statistics from map reduce jobs running on Hadoop clusters and stores the collected job history in an...

Tormenta

Scala extensions for the Storm distributed computation system. Tormenta adds a type-safe wrapper over Storm’s Kafka and Kestrel...

Twitter CLDR (Ruby)

A Ruby implementation of the ICU (International Components for Unicode) that uses the Common...

Scrooge

Scrooge is a Thrift code generator written in Scala, which currently generates code for Scala and Java.

It’s meant to be a...

Effective Scala

Twitter’s guide to Effective Scala programming.

Hosebird Client (HBC)

A Java HTTP client for consuming Twitter’s Streaming API. Features * GZip support * OAuth support * Partitioning support *...

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Featured Contributors

Jared Wong
Jared Wong
@jaredlwong
Sam Ritchie
Sam Ritchie
@sritchie
Manju Rajashekhar
Manju Rajashekhar
@manju
Jerry Xu
Jerry Xu
@jerryxu
Christopher Coco
Christopher Coco
@cacoco
Dmitriy Ryaboy
Dmitriy Ryaboy
@squarecog
(((Avi Bryant)))
(((Avi Bryant)))
@avibryant
kevin oliver
kevin oliver
@kevino
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Code of Conduct

Our Open Source Code of Conduct reflects the standards we hold ourselves within our open source projects and the communities we work with.
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Contributor's License Agreement

For certain Twitter open-source projects, Twitter requires you or your employer accept and submit a Contributors License Agreement (CLA) with Twitter. In order to address the intellectual property license granted with contributions, Twitter must have a CLA on file that has been submitted by each contributor. The CLA is designed for your protection as a contributor; it does not change your ownership of your contributions. By accepting the CLA, you represent that you have the rights needed to grant Twitter a license to the code.
Submit CLA
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