Open source alternatives to CodeRabbit
2 projects on starwire do the same job. Ranked by how much of what CodeRabbit does each one covers, read from its README and website. Ties go to the most active.
What CodeRabbit does
- AI review comments on pull requestscore
- Summaries of code changescore
- Suggested fixes in the PR
- Chat with the reviewer in comments
- Custom review rules
- Reviews in the editor or CLI
Each dot in the table is one job, in this order. Square dots are core jobs and count double. Full means yes, half means partly. "See the evidence" under a project shows the line behind each one. Coverage is what a project documents, not how well it works or how hard it is to move to. How we score this
| Project | Covers | Stars | Commits, 12 weeks | Last release | Closed vs opened | Setup | License |
|---|---|---|---|---|---|---|---|
 pr-agentOpen source AI pull request reviewer that comments on code changes |
Replaces it100% | 16k+636 | 7 days ago | 100% | Needs a server | MIT | |
Covers everything on the checklist.See the evidence
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 context-engineering-kitClaude Code skills that improve agent output across several coding tools |
Same job, different way38% | 1.8k+22 | 3 months ago | Too few | For developers | GPL-3.0 | |
Covers 0 of 2 core jobs. Partly: AI review comments on pull requests; Suggested fixes in the PR; Custom review rules. Not shown: Summaries of code changes; Chat with the reviewer in comments.See the evidence
| |||||||
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