head to head · open source
nanobot vs BotSharp
nanobot has 48,372 GitHub stars, 8,548 forks, 775 open issues and last shipped today. BotSharp has 3,104 stars, 651 forks, 48 open issues and last shipped today. nanobot leads on adoption by 1,458% (48,372 vs 3,104 stars). nanobot is written in Python under MIT; BotSharp is written in C# under Apache-2.0. nanobot has attracted 18% as many forks as stars, BotSharp 21%. nanobot was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (ai-agent, chatbot, multi-agent), 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 | BotSharp | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 3.1K |
| License | MIT | Apache-2.0 |
| Written in | Python | C# |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 8.5K | ⑂ 651 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick nanobot if
- You weight community size — 48K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick BotSharp if
- You want the BotSharp feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C#
- You evaluated both and BotSharp fits your workflow better
About nanobot
nanobot is an ultra lightweight, open source, self hosted personal AI agent framework written in Python, aimed at individual developers and small teams who want to run their own agent through a browser WebUI, a terminal, or chat apps instead of renting a hosted assistant.
read the full nanobot overview →
About BotSharp
BotSharp is an open source AI multi agent framework for .NET that connects large language models to existing business applications, and it is aimed at C enterprise developers who want agent orchestration and conversation state to live inside their own information systems rather than in a separate stack.
read the full BotSharp overview →
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Frequently asked questions
Is nanobot or BotSharp more popular?
nanobot has 48,372 GitHub stars and BotSharp has 3,104. nanobot has the larger community by that measure.
Are nanobot and BotSharp free?
Both are open source. nanobot is licensed under MIT and BotSharp under Apache-2.0. Neither carries a licence fee.
What is the difference between nanobot and BotSharp?
nanobot is written in Python and BotSharp in C#. 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 BotSharp?
Choose nanobot if you want the larger community (48,372 stars) or its MIT licence terms. Choose BotSharp if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.