Jenkins

Open-source automation server with a huge plugin ecosystem.

About Jenkins

In Jenkins’s own words: “Jenkins – an open source automation server which enables developers around the world to reliably build, test, and deploy their software”

Jenkins is open source, is free to use and can be self-hosted.

People switching from GitHub Actions often consider Jenkins.

Jenkins is an alternative to

GitHub ActionsSee all GitHub Actions alternatives

Similar to Jenkins

Azure PipelinesCI/CD for any language and platform from Microsoft.
Bitbucket PipelinesCI/CD built into Bitbucket.
BuildkiteCI/CD that runs on your own infrastructure at scale.
CircleCIHosted CI/CD with fast builds and caching.
GitLab CI/CDCI/CD built into GitLab, self-hostable.

Listed for information; LaunchStall isn’t affiliated with Jenkins. The quoted description comes from jenkins.io. Features and plans change — check the official site for current details.