Best Open Source Alternatives to Semaphore CI

Compare the best free and open-source alternatives to Semaphore CI — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated August 2026 · 3 alternatives

Semaphore CI

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Semaphore CI alternatives compared

Open-source alternatives to Semaphore CI, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Drone CI	37,589	Apache-2.0	LinuxDocker	Yes	Jul 2026	Visit
Jenkins	26,384	MIT	LinuxWindowsmacOSDocker	Yes	Aug 2026	Visit
Woodpecker CI	7,611	Apache-2.0	LinuxDocker	Yes	Aug 2026	Visit