head to head · open source
open-code-review vs mantis
open-code-review has 37,770 GitHub stars, 2,693 forks, 160 open issues and last shipped yesterday. mantis has 1,665 stars, 160 forks, 1 open issues and last shipped 2 days ago. open-code-review leads on adoption by 2,168% (37,770 vs 1,665 stars). open-code-review is written in Go under Apache-2.0; mantis is written in Python under Apache-2.0. open-code-review has attracted 7% as many forks as stars, mantis 10%. open-code-review was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (code-review), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| open-code-review | mantis | |
|---|---|---|
| GitHub stars | ★ 38K | ★ 1.7K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Python |
| Last push | 2026-09-19 | 2026-09-18 |
| Forks | ⑂ 2.7K | ⑂ 160 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick open-code-review if
- You weight community size — 38K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick mantis if
- You want the mantis feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and mantis fits your workflow better
About open-code-review
Open Code Review is an Apache 2.0, Go based AI code review CLI that reads Git diffs, sends changed files to a configurable LLM through a tool using agent, and returns line level review comments, built for developers and platform teams that want large scale review automated inside infrastructure they control.
read the full open-code-review overview →
About mantis
Mantis is a modular, stack agnostic toolkit of security review skills for AI coding agents, and it includes an ADK reference harness for building secure software. It lives in the developer tools, AI coding agent, and application security ecosystem, with topics such as code review, DevSecOps, multi agent systems, and hardware security. The project helps agents autonomously find, reproduce, and patch vulnerabilities while giving humans a structured way to review results.
read the full mantis overview →
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Frequently asked questions
Is open-code-review or mantis more popular?
open-code-review has 37,770 GitHub stars and mantis has 1,665. open-code-review has the larger community by that measure.
Are open-code-review and mantis free?
Both are open source. open-code-review is licensed under Apache-2.0 and mantis under Apache-2.0. Neither carries a licence fee.
What is the difference between open-code-review and mantis?
open-code-review is written in Go and mantis in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, open-code-review or mantis?
Choose open-code-review if you want the larger community (37,770 stars) or its Apache-2.0 licence terms. Choose mantis if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.