head to head · open source
Open WebUI vs moltis
Open WebUI has 157,575 GitHub stars, 22,923 forks, 294 open issues and last shipped yesterday. moltis has 2,939 stars, 361 forks, 83 open issues and last shipped 11 days ago. Open WebUI leads on adoption by 5,262% (157,575 vs 2,939 stars). Open WebUI is written in Python under a custom or non-standard licence; moltis is written in Rust under MIT. Open WebUI has attracted 15% as many forks as stars, moltis 12%. Open WebUI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (llm, mcp), 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 WebUI | moltis | |
|---|---|---|
| GitHub stars | ★ 158K | ★ 2.9K |
| License | Custom / other | MIT |
| Written in | Python | Rust |
| Last push | 2026-11-02 | 2026-10-23 |
| Forks | ⑂ 23K | ⑂ 361 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Open WebUI if
- You weight community size — 158K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick moltis if
- You want the moltis feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and moltis fits your workflow better
About Open WebUI
Open WebUI 👋 Open WebUI is a home for AI , a self hosted AI platform that's extensible , feature rich , user friendly, and built to run entirely offline . With support for Ollama and OpenAI compatible APIs , it gives you a powerful, provider agnostic interface for both local and cloud based models. Passionate about open source AI? Join our team → [!TIP] Looking for an Enterprise Plan? – Speak with Our Sales Team Today! For more information, be sure to check out our Open WebUI Documentation. Key Features of Open WebUI ⭐ 🚀 Effortless Setup : Install seamlessly via pip, uv, Docker, or Kubernetes (kubectl…
read the full Open WebUI overview →
About moltis
Moltis — A secure persistent personal agent server in Rust One binary — sandboxed, secure, yours. Installation • Comparison • Architecture • Security • Features • How It Works • Contributing Moltis recently hit the front page of Hacker News. Please open an issue for any friction at all. I'm focused on making Moltis excellent. Secure by design — Your keys never leave your machine. Every command runs in a sandboxed container, never on your host. Your hardware — Runs on a Mac Mini, a Raspberry Pi, or any server you own. One Rust binary, no Node.js, no npm, no runtime. Full featured — Voice, memory, cross session…
read the full moltis overview →
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Frequently asked questions
Is Open WebUI or moltis more popular?
Open WebUI has 157,575 GitHub stars and moltis has 2,939. Open WebUI has the larger community by that measure.
Are Open WebUI and moltis free?
Both are open source. Open WebUI has no licence declared in this registry, and moltis is licensed under MIT. Both are free to self-host.
What is the difference between Open WebUI and moltis?
Open WebUI is written in Python and moltis 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, Open WebUI or moltis?
Choose Open WebUI if you want the larger community (157,575 stars) or its Custom / other licence terms. Choose moltis if its feature set, stack or MIT licence fits better. Both are self-hostable.