What does Jenkins replace?

Jenkins is a free alternative to CircleCI ($180/yr).

Is Jenkins open source?

Yes. Jenkins is licensed under MIT, an OSI-approved open-source license.

Yes (self-hosted server; web UI).

Yes. Jenkins is a server app you run on your own server.

A free, open-source alternative to CircleCI. Switching saves $180/yr at list price.

Checked Oct 17, 2026 · How we check

Self-hosted server

Replaces it Active Open source · MIT Linux Self-hostable

jenkinsci/jenkins26.7k★last push Oct 16, 2026checked Oct 17, 2026

You run and patch the server, agents and plugins yourself, and CircleCI YAML must be rewritten as Jenkins pipelines.

Self-host

Runs on your own Linux server. Setup docs are on jenkins.io.

What does Jenkins replace?: Jenkins is a free alternative to CircleCI ($180/yr).
Is Jenkins open source?: Yes. Jenkins is licensed under MIT, an OSI-approved open-source license.
Does Jenkins run on Linux?: Yes (self-hosted server; web UI).
Can you self-host Jenkins?: Yes. Jenkins is a server app you run on your own server.