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...

Parquet

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

Finatra

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

See the...

Storehaus

Storehaus is a library that makes it easy to work with asynchronous key value stores. Storehaus is built on top of Twitter’s...

Tormenta

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

Snowflake

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

fatcache

fatcache is memcache on SSD. Think of fatcache as a cache for your big data.

libcrunch

Libcrunch is a lightweight mapping framework that maps data objects to a number of nodes, subject to user-specified constraints.

...

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

Julio Capote
Julio Capote
@capotej
kevin oliver
kevin oliver
@kevino
Ashutosh Singhal
Ashutosh Singhal
@daashu
David Helder
David Helder
@dhelder
Comfortable Enum
Comfortable Enum
@slyphon
Ximing Yu
Ximing Yu
@ximyu
mark mcbride
mark mcbride
@mccv
Pankaj Bhambhani
Pankaj Bhambhani
@pankajb64
Reed Loden
Reed Loden
@reedloden
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