Twitter supports a variety of open source organizations through contributions and official membership:
Ada Initiative
The Ada Initiative (@AdaInitiative) is a non-profit organization dedicated to increasing participation of women in open technology and culture. We're happy to sponsor AdaCamp's and other events put on by the Ada Initiative.
Apache Software Foundation
The Apache Software Foundation (@TheASF) is made up of nearly 100 top level projects that cover a wide range of technologies. The ASF provides organizational, legal and financial support for those projects. At Twitter, we're proud to contribute to a few of those projects.
Eclipse Foundation
The Eclipse Foundation is a not-for-profit, member supported corporation that hosts the Eclipse projects and helps cultivate both an open source community and an ecosystem of complementary products and services. Eclipse is an open source community, whose projects are focused on building an open development platform comprised of extensible frameworks, tools and runtimes for building, deploying and managing software across the lifecycle.
Java Community Process
The Java Community Process (@jcp_org) is the mechanism for developing standard technical specifications for Java technology. At Twitter, we're a large consumer of Java technology and are proud to be a member of the JCP.
Linux Foundation
The Linux Foundation (@linuxfoundation) is a nonprofit consortium dedicated to fostering the growth of Linux. At Twitter, we're proud to support the foundation and its goals via its open source compliance program.
Open Invention Network
The Open Invention Network (OIN) is an intellectual property company that was formed to promote Linux by using patents to create a collaborative environment. It promotes a positive, fertile ecosystem for Linux, which in turns drives innovation and choice in the global marketplace.