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Buildbot vs Drone: catalog facts
Buildbot	Drone
Free Buildbot is free and open source under the GPL-2.0 license.	Free Open-source edition under the Apache 2.0 licence.
Windows, macOS, Linux, Web, Self-hosted	Windows, Linux, Self-hosted
Runs jobs across distributed workers and platforms Supports parallel builds and flexible version control integration	Pipelines defined in a readable file kept in the repository Every step runs in an isolated container
Requires configuring and operating a master and worker machines Workflows are defined through Python configuration scripts	Now owned by Harness, so its long-term direction depends on that company Requires Docker and a server you run yourself
Downloadable app, Web application, Self-hosted	Self-hosted
Open source	Open source
License: GPL-2.0	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.