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

Ambrose

Twitter Ambrose is a platform for visualization and real-time monitoring of MapReduce data workflows. It presents a global view of all...

Cassovary

Cassovary is a simple big graph processing library for the JVM. Most JVM-hosted graph libraries are flexible but not space efficient....

Effective Scala

Twitter’s guide to Effective Scala programming.

Tormenta

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

Finagle

Finagle is an asynchronous network stack for the JVM that you can use to build asynchronous Remote Procedure Call (RPC) clients and...

Hosebird Client (HBC)

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

hadoop

The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of...

twemproxy

A fast, light-weight proxy for memcached and redis

hRaven

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

View all

Featured Contributors

nivek
nivek
@kevinio
Andy Trevorah
Andy Trevorah
@trevorah_
Tianshuo
Tianshuo
@tsdeng
Sam Ritchie
Sam Ritchie
@sritchie
Doug Tangren
Doug Tangren
@softprops
(((Attila Szegedi)))
(((Attila Szegedi)))
@asz
Ryan Weald
Ryan Weald
@rweald
Wen-Hao Lue
Wen-Hao Lue
@wlue
Andy Schlaikjer
Andy Schlaikjer
@sagemintblue
View all

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.
Learn More

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
Want to work at Twitter? Browse jobs