head to head · open source
nanobot vs ChatUI
nanobot has 49,806 GitHub stars, 8,711 forks, 775 open issues and last shipped yesterday. ChatUI has 4,463 stars, 426 forks, 53 open issues and last shipped 24 days ago. nanobot leads on adoption by 1,016% (49,806 vs 4,463 stars). nanobot is written in Python under MIT; ChatUI is written in TypeScript under MIT. nanobot has attracted 17% as many forks as stars, ChatUI 10%. nanobot was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (chatbot), 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
| nanobot | ChatUI | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 4.5K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-04 | 2026-10-12 |
| Forks | ⑂ 8.7K | ⑂ 426 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick nanobot if
- You weight community size — 50K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick ChatUI if
- You want the ChatUI feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and ChatUI fits your workflow better
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 →
About ChatUI
The UI design language and React library for Conversational UI Website： English 简体中文 Features 😎 Best Practices : The best practice for chat interaction based on our experience of Alime Chatbot 🛡 TypeScript : Written in TypeScript with predictable static types 📱 Responsive : Responsive design to adapt automatically to whatever device ♿ Accessibility : Accessibility support and get the certification from Accessibility Research Association 🎨 Theming : Powerful theme customization in every detail 🌍 International : Internationalization support for dozens of languages Environment Support Modern browsers (support…
read the full ChatUI overview →
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Frequently asked questions
Is nanobot or ChatUI more popular?
nanobot has 49,806 GitHub stars and ChatUI has 4,463. nanobot has the larger community by that measure.
Are nanobot and ChatUI free?
Both are open source. nanobot is licensed under MIT and ChatUI under MIT. Neither carries a licence fee.
What is the difference between nanobot and ChatUI?
nanobot is written in Python and ChatUI 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, nanobot or ChatUI?
Choose nanobot if you want the larger community (49,806 stars) or its MIT licence terms. Choose ChatUI if its feature set, stack or MIT licence fits better. Both are self-hostable.