head to head · open source
nanobot vs builderbot
nanobot has 49,806 GitHub stars, 8,711 forks, 775 open issues and last shipped yesterday. builderbot has 2,978 stars, 955 forks, 19 open issues and last shipped 4 days ago. nanobot leads on adoption by 1,572% (49,806 vs 2,978 stars). nanobot is written in Python under MIT; builderbot is written in TypeScript under MIT. nanobot has attracted 17% as many forks as stars, builderbot 32%. 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 | builderbot | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 3.0K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-04 | 2026-11-01 |
| Forks | ⑂ 8.7K | ⑂ 955 |
| 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 builderbot if
- You want the builderbot feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and builderbot 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 builderbot
BuilderBot Getting Started With this library, you can build automated conversation flows agnostic to the WhatsApp provider, set up automated responses for frequently asked questions, receive and respond to messages automatically, and track interactions with customers. Additionally, you can easily set up triggers to expand functionalities limitlessly. Documentation Visit builderbot to view the full documentation. Official Course If you want to discover all the functions and features offered by the library you can take the course. View Course Contact Us 💻 Discord 👌 𝕏 (Twitter)
read the full builderbot overview →
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Frequently asked questions
Is nanobot or builderbot more popular?
nanobot has 49,806 GitHub stars and builderbot has 2,978. nanobot has the larger community by that measure.
Are nanobot and builderbot free?
Both are open source. nanobot is licensed under MIT and builderbot under MIT. Neither carries a licence fee.
What is the difference between nanobot and builderbot?
nanobot is written in Python and builderbot 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 builderbot?
Choose nanobot if you want the larger community (49,806 stars) or its MIT licence terms. Choose builderbot if its feature set, stack or MIT licence fits better. Both are self-hostable.