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

Pants

Pants is a build system for software projects in a variety of languages. It works particularly well for a single source code repository...

Parquet

Parquet is a columnar storage format that supports nested data. Parquet metadata is encoded using Apache Thrift. We created Parquet to...

Cassovary

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

hogan.js

Hogan.js is a compiler for the Mustache templating language

Aurora

Aurora is a scheduler that provides all of the primitives necessary to quickly deploy and scale stateless and fault tolerant services in...

Tormenta

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

bootstrap

A sleek, intuitive and powerful mobile first front-end framework for faster and easier web development. Since...

secureheaders

The gem will automatically apply several headers that are related to security. This includes: * Content Security Policy (CSP) - Helps...

twemproxy

A fast, light-weight proxy for memcached and redis

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Featured Contributors

Nicolas
Nicolas
@necolas
@lahosken
@lahosken
@lahosken
Steve Jenson
Steve Jenson
@stevej
(((Jeremy Cloud)))
(((Jeremy Cloud)))
@jeremycloud
Jie Yu
Jie Yu
@jie_yu
Sébastien Cevey
Sébastien Cevey
@theefer
Ian O'Connell
Ian O'Connell
@0x138
P. Oscar Boykin
P. Oscar Boykin
@posco
matt knox
matt knox
@mattknox
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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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