Open alternatives3
Open-source apps that replace CircleCI
Harness is a self-hosted developer platform that combines code hosting, automated build and deploy pipelines, hosted development environments, and artifact registries. It is for development teams who want to run these tools on their own machines or servers.
Jenkins is a free server that runs repeated software tasks automatically, such as building, testing and deploying code. It is aimed at software developers and IT teams who want to automate their development work.
Buildbot is a framework that automatically builds and tests software every time code changes, so teams catch problems early. It is aimed at software developers and IT teams who want to run their own build and test system.
What's missing
What people still miss here, and wish existed. Upvote what matters to you.
Before you build
Planning something for automated builds & tests? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Fix the list itself
A project or closed app missing from this list, or a mistake on it? These open a short form on GitHub, and a mod reviews it. To say what a project can't do, use What's missing.
About this page
Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.
Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.
GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.
Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.
How Open Source Everything works