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CI servers

Self-hosted servers that run build and deployment pipelines.

Side by side

CI servers
ToolStarsLicenceTermsSelf-hostedLanguageLatestLast push
act73kMITOpen sourceYesGov0.2.972026-11-04
Jenkins27kMITOpen sourceYesJavajenkins-2.5902026-11-11
Dagger17kApache-2.0Open sourceYesGov0.21.112026-11-12
Tekton9.1kApache-2.0Open sourceYesGov1.18.02026-11-10
Woodpecker CI8.2kApache-2.0Open sourceYesGov3.20.12026-11-12
Concourse7.9kApache-2.0Open sourceYesGov8.3.32026-11-12
GoCD7.4kApache-2.0Open sourceYesJava26.1.02026-11-10
Actions Runner Controller6.7kApache-2.0Open sourceYesGogha-runner-scale-set-0.15.12026-11-09
Buildbot5.5kGPL-2.0Open sourceYesPythonv4.3.02026-11-10
Jenkins X4.7kApache-2.0Open sourceYesGov3.17.1202026-11-09

10 tools

act

Run your GitHub Actions locally 🚀

Language
Go
Licence
MIT
Stars
73k
Latest
v0.2.97
Last push
2026-11-04
Dagger

Automation engine to build, test and ship any codebase. Runs locally, in CI, or directly in the cloud

Language
Go
Licence
Apache-2.0
Stars
17k
Latest
v0.21.11
Last push
2026-11-12
Concourse

Concourse is a container-based automation system written in Go. It's mostly used for CI/CD.

Language
Go
Licence
Apache-2.0
Stars
7.9k
Latest
v8.3.3
Last push
2026-11-12
GoCD

GoCD - Continuous Delivery server main repository

Language
Java
Licence
Apache-2.0
Stars
7.4k
Latest
26.1.0
Last push
2026-11-10
Buildbot

Python-based continuous integration testing framework; your pull requests are more than welcome!

Language
Python
Licence
GPL-2.0
Stars
5.5k
Latest
v4.3.0
Last push
2026-11-10
Jenkins X

Jenkins X provides automated CI+CD for Kubernetes with Preview Environments on Pull Requests using Cloud Native pipelines from Tekton

Language
Go
Licence
Apache-2.0
Stars
4.7k
Latest
v3.17.120
Last push
2026-11-09

What these tools replace