What is Buildbot used for?

Buildbot is a Python-based framework for automating software builds, tests and releases, configured in code and run on your own infrastructure. It is a good fit for multi-platform build and test farms, and custom CI pipelines for large projects.

Is Buildbot open source?

Yes. Buildbot is open source under the GPL-2.0 licence. Its source code is on GitHub at buildbot/buildbot and is written mainly in Python.

Yes. Buildbot is open source, so the software itself is free to use.

Can I self-host Buildbot?

Yes. Buildbot can be self-hosted on your own server or infrastructure; there is no official hosted version.

What is Buildbot an alternative to?

Buildbot is an open-source alternative to TeamCity, Bamboo, GitHub Actions and CircleCI. Other open-source alternatives to TeamCity include Concourse CI, Jenkins and Harness.

Is Buildbot actively maintained?

Yes. The most recent commit to Buildbot was on 28 September 2026, and the latest release is v4.3.0, published on 12 May 2025. The project has 5.5k stars on GitHub.

Buildbot: open-source alternative to TeamCity, Bamboo

About Buildbot

Buildbot is an open-source continuous integration framework written in Python. Rather than a fixed service with a rigid workflow, it is a toolkit for automating the whole software development cycle, from compiling and testing code to packaging and releasing it, with configuration expressed in Python.

The project's site presents it as a framework with batteries included, covering automated build, test and release jobs, a web interface, and a tutorial and documentation to get started. A master process coordinates build workers that can run on different platforms, which makes it a good fit for projects that need to test across many operating systems and configurations. The site also lists success stories and a Metabuildbot used to build Buildbot itself.

Buildbot is licensed under GPL-2.0 and is typically self-hosted, with community support through a mailing list and IRC. It suits teams that want a highly customizable CI system they control, particularly for complex or multi-platform build setups.

Key features

Python-configured build automation
Automated build, test and release jobs
Distributed workers across platforms
Web interface for build status
Extensible with custom steps
Tutorial and extensive documentation

Good fit for

→Multi-platform build and test farms
→Custom CI pipelines for large projects

Built with: Python
Tags: continuous-integration; ci; python; build-automation; devops; release-automation; self-hosted

Buildbot: questions and answers

What is Buildbot used for?: Buildbot is a Python-based framework for automating software builds, tests and releases, configured in code and run on your own infrastructure. It is a good fit for multi-platform build and test farms, and custom CI pipelines for large projects.
Is Buildbot open source?: Yes. Buildbot is open source under the GPL-2.0 licence. Its source code is on GitHub at buildbot/buildbot and is written mainly in Python.
Is Buildbot free?: Yes. Buildbot is open source, so the software itself is free to use.
Can I self-host Buildbot?: Yes. Buildbot can be self-hosted on your own server or infrastructure; there is no official hosted version.
What is Buildbot an alternative to?: Buildbot is an open-source alternative to TeamCity, Bamboo, GitHub Actions and CircleCI. Other open-source alternatives to TeamCity include Concourse CI, Jenkins and Harness.
Is Buildbot actively maintained?: Yes. The most recent commit to Buildbot was on 28 September 2026, and the latest release is v4.3.0, published on 12 May 2025. The project has 5.5k stars on GitHub.