head to head · open source
Open WebUI vs nanobot
Open WebUI has 157,575 GitHub stars, 22,923 forks, 294 open issues and last shipped yesterday. nanobot has 49,766 stars, 8,713 forks, 775 open issues and last shipped yesterday. Open WebUI leads on adoption by 217% (157,575 vs 49,766 stars). Open WebUI is written in Python under a custom or non-standard licence; nanobot is written in Python under MIT. Open WebUI has attracted 15% as many forks as stars, nanobot 18%. 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 (llms, 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 | nanobot | |
|---|---|---|
| GitHub stars | ★ 158K | ★ 50K |
| License | Custom / other | MIT |
| Written in | Python | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 23K | ⑂ 8.7K |
| 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 nanobot if
- You want the nanobot feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and nanobot 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 nanobot
English 简体中文 繁體中文 Español Français Bahasa Indonesia 日本語 한국어 Русский Tiếng Việt Discord · X · WeChat / Feishu nanobot 🐈 nanobot is an ultra lightweight, open source, self hosted personal AI agent framework written in Python. It runs in a WebUI, terminal, or chat apps and combines tools, long term memory, MCP integrations, model routing, multi agent delegation, scheduled automation, and an OpenAI compatible API in a small, readable core. Start Here What can nanobot do? nanobot is a self hosted personal AI agent runtime. It can: run in a browser WebUI or terminal connect to Telegram, Discord, Slack, WeChat, Email…
read the full nanobot overview →
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Frequently asked questions
Is Open WebUI or nanobot more popular?
Open WebUI has 157,575 GitHub stars and nanobot has 49,766. Open WebUI has the larger community by that measure.
Are Open WebUI and nanobot free?
Both are open source. Open WebUI has no licence declared in this registry, and nanobot is licensed under MIT. Both are free to self-host.
What is the difference between Open WebUI and nanobot?
Open WebUI is written in Python and nanobot 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 WebUI or nanobot?
Choose Open WebUI if you want the larger community (157,575 stars) or its Custom / other licence terms. Choose nanobot if its feature set, stack or MIT licence fits better. Both are self-hostable.