Best Open Source Alternatives to CircleCI

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

Curated by open-source.store · Updated November 2026 · 5 alternatives

CircleCI

Proprietary SaaS

PricingFreemium

Platformsweb

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CircleCI alternatives compared

Open-source alternatives to CircleCI, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Drone CI	38,805	Apache-2.0	LinuxDocker	Yes	Nov 2026	Visit
Harness	38,805	Apache-2.0	DockerLinux	Yes	Nov 2026	Visit
Jenkins	26,719	MIT	LinuxWindowsmacOSDocker	Yes	Nov 2026	Visit
Woodpecker CI	8,097	Apache-2.0	LinuxDocker	Yes	Nov 2026	Visit
Semaphore	1,631	—	Web	No	Nov 2026	Visit

Top open-source CircleCI alternatives

Drone CI38,805Apache-2.0

Drone CI is a self-hosted CI/CD platform that executes pipelines in ephemeral Docker containers, replacing hosted services like CircleCI.

LinuxDocker

vs CircleCI: a free, open-source option you fully control, licensed Apache-2.0.

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Harness38,805Apache-2.0

Harness Open Source is a self-hosted developer platform unifying Git repositories, containerized CI/CD pipelines, Gitspaces, and artifact management.

DockerLinux

vs CircleCI: a free, open-source option you fully control, licensed Apache-2.0.

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Jenkins26,719MIT

Jenkins is an open-source self-hosted automation server replacing GitHub Actions Cloud with complete control over build pipelines, agents, and secrets.

LinuxWindowsmacOSDocker

vs CircleCI: a free, open-source option you fully control, licensed MIT.

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