head to head · open source
mantis vs zeroshot
mantis has 2,275 GitHub stars, 194 forks, 1 open issues and last shipped today. zeroshot has 1,919 stars, 180 forks, 3 open issues and last shipped yesterday. mantis leads on adoption by 19% (2,275 vs 1,919 stars). mantis is written in Python under Apache-2.0; zeroshot is written in Rust under MIT. mantis has attracted 9% as many forks as stars, zeroshot 9%. mantis was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai-agents, 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
| mantis | zeroshot | |
|---|---|---|
| GitHub stars | ★ 2.3K | ★ 1.9K |
| License | Apache-2.0 | MIT |
| Written in | Python | Rust |
| Last push | 2026-10-04 | 2026-10-03 |
| Forks | ⑂ 194 | ⑂ 180 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick mantis if
- You weight community size — 2.3K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick zeroshot if
- You want the zeroshot feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and zeroshot fits your workflow better
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 →
About zeroshot
Zeroshot is an open source, MIT licensed Rust CLI that orchestrates coding agents as an explicit review graph for developers who want AI written changes verified by agents other than the one that wrote them.
read the full zeroshot overview →
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Frequently asked questions
Is mantis or zeroshot more popular?
mantis has 2,275 GitHub stars and zeroshot has 1,919. mantis has the larger community by that measure.
Are mantis and zeroshot free?
Both are open source. mantis is licensed under Apache-2.0 and zeroshot under MIT. Neither carries a licence fee.
What is the difference between mantis and zeroshot?
mantis is written in Python and zeroshot in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, mantis or zeroshot?
Choose mantis if you want the larger community (2,275 stars) or its Apache-2.0 licence terms. Choose zeroshot if its feature set, stack or MIT licence fits better. Both are self-hostable.