Buildbot is an open-source application originally written by Brian Warner, and now maintained by Dustin J. Mitchell. It is used to build, test, and release a wide variety of software.
As an open source project, Buildbot welcomes all potential users and contributors. Contributions come from individual users and from well-known companies. We have participated in the Google Summer of Code since 2011, and host sprints (multi-day programming sessions) at PyCon every year. The #buildbot IRC channel is an active and positive communication channel, as is the mailing list. This environment has encouraged a broad developer community, with 71 contributors committing code in the last year alone, and many more offering advice and support to other users.
Buildbot has been offered membership in the Software Freedom Conservancy.
The software is licensed under version 2 of the GNU Public License.