head to head · open source
mantis vs 0security
mantis has 2,779 GitHub stars, 237 forks, 1 open issues and last shipped today. 0security has 1,356 stars, 179 forks, 5 open issues and last shipped today. mantis leads on adoption by 105% (2,779 vs 1,356 stars). mantis is written in Python under Apache-2.0; 0security is written in TypeScript under Apache-2.0. mantis has attracted 9% as many forks as stars, 0security 13%. 0security was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (ai-agents, application-security, 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 | 0security | |
|---|---|---|
| GitHub stars | ★ 2.8K | ★ 1.4K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-15 | 2026-11-15 |
| Forks | ⑂ 237 | ⑂ 179 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick mantis if
- You weight community size — 2.8K 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 0security if
- You want the 0security feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and 0security fits your workflow better
About mantis
Mantis: Portable Toolkit for Building Secure Software [!CAUTION] USE AT YOUR OWN RISK. BE EXTREMELY CAREFUL. This suite is designed to generate and execute autonomously generated code that may be unstable or perform unexpected actions. USE THIS ONLY IN ISOLATED, RESTRICTED ENVIRONMENTS. Never run this suite on a machine with access to production systems, sensitive data, or internal networks. [!IMPORTANT] RESPONSIBLE USE AI models are non deterministic and can hallucinate findings or generate incorrect patches. All findings must be manually verified by a security expert before being reported. Do not mass file…
read the full mantis overview →
About 0security
Continuous security agents for your whole tech stack By the Swiss Applied AI & Cybersecurity Research Lab Backed by 0security is an open source framework for building and deploying security agents. They find vulnerabilities across your code, dependencies, infrastructure, LLM apps and AI agents, prove them, fix them, verify the fix and keep watching. It runs on your own infrastructure, with the LLMs you choose. Quick start Prefer the terminal? Windows, Docker and source installs Windows (experimental): download 0 windows x64.exe from Releases. Docker : docker run rm ghcr.io/0sec labs/0security:latest help . See…
read the full 0security overview →
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Frequently asked questions
Is mantis or 0security more popular?
mantis has 2,779 GitHub stars and 0security has 1,356. mantis has the larger community by that measure.
Are mantis and 0security free?
Both are open source. mantis is licensed under Apache-2.0 and 0security under Apache-2.0. Neither carries a licence fee.
What is the difference between mantis and 0security?
mantis is written in Python and 0security in TypeScript. 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 0security?
Choose mantis if you want the larger community (2,779 stars) or its Apache-2.0 licence terms. Choose 0security if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.