Comparison
ReviewOS and GitHub
GitHub is the default for good reasons. This page is about the specific reasons somebody would choose otherwise, and the specific reasons they should not.
Where GitHub is genuinely better
Saying otherwise would waste your time. GitHub has the network: your contributors already have accounts, your dependencies are already there, and the integrations you use were built for it first.
- Actions, with a marketplace of ready-made workflows
- Discussions, Projects, Pages, Packages, and Codespaces in one place
- Discoverability, which matters enormously for a new open source project
- An organisation that runs it, so you do not
Where this is different by design
ReviewOS spends its complexity on review, and nothing else. Some of that is a genuine difference in behaviour rather than a matter of taste.
- Review threads anchor to a commit and survive a force push rather than going quiet
- Stacked pull requests are a first-class object, not a client-side tool wrapped around the API
- Diffs are computed against the merge base and rendered on the server
- Every merge blocker is reported together rather than one per attempt
The self-hosting question
GitHub Enterprise Server exists and is a serious product. The difference is scale of commitment: ReviewOS is one process and one Postgres, MIT licensed, on hardware you already have.
Who should stay
If you are starting an open source project and want contributors to find it, stay on GitHub. If your workflow depends on Actions and rewriting it is not worth the review improvements, stay. Neither of those is a close call.
Who should look
Teams where agents write most of the code and review became the bottleneck. Teams that need the code on their own infrastructure. Teams doing long stacks of dependent work who have already built tooling to survive it.
Try it beside what you already use
Mirroring a repository costs nothing and tells you more than any comparison page.