Opensource | Engineering

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

Flight

Flight is a lightweight, component-based, event-driven JavaScript framework that maps behavior to DOM nodes. It was created at Twitter,...

Tormenta

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

Mesos

Apache Mesos is a cluster manager that provides efficient resource isolation and sharing across distributed applications, or frameworks...

Chill

Extensions for the Kryo serialization library including serializers and a set of classes to ease configuration of Kryo in systems like...

Bijection

A Bijection is an invertible function that converts back and forth between two types, with the contract that a round-trip through the...

Ambrose

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

recess

A simple and attractive code quality tool for CSS built on top of LESS.

secureheaders

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

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Featured Contributors

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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.

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Open Source at Twitter