head to head · open source
AstrBot vs BotSharp
AstrBot has 45,662 GitHub stars, 3,350 forks, 1,516 open issues and last shipped yesterday. BotSharp has 3,116 stars, 657 forks, 48 open issues and last shipped yesterday. AstrBot leads on adoption by 1,365% (45,662 vs 3,116 stars). AstrBot is written in Python under AGPL-3.0; BotSharp is written in C# under Apache-2.0. AstrBot has attracted 7% as many forks as stars, BotSharp 21%. AstrBot 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
| AstrBot | BotSharp | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 3.1K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | Python | C# |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.4K | ⑂ 657 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick AstrBot if
- You weight community size — 46K stars and counting
- You want the AGPL-3.0 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 AstrBot
简体中文 ｜ 繁體中文 ｜ 日本語 ｜ Français ｜ Español ｜ Русский Documentation ｜ Blog ｜ Roadmap ｜ Issue Tracker ｜ Email Support AstrBot is an open source all in one Agent chatbot platform that integrates with mainstream instant messaging apps. It provides reliable and scalable conversational AI infrastructure for individuals, developers, and teams. Whether you're building a personal AI companion, intelligent customer service, automation assistant, or enterprise knowledge base, AstrBot enables you to quickly build production ready AI applications within your IM platform workflows. Key Features 1. 💯 Free & Open Source. 2. ✨ AI…
read the full AstrBot overview →
About BotSharp
The Open Source AI Agent Application Framework Connect LLMs to your existing application focused on your business "Conversation as a platform (CaaP) is the future, so it's perfect that we're already offering the whole toolkits to our .NET developers using the BotSharp AI BOT Platform Builder to build a CaaP. It opens up as much learning power as possible for your own robots and precisely control every step of the AI processing pipeline." BotSharp is an open source machine learning framework for AI Bot platform builder. This project involves natural language understanding, computer vision and audio processing…
read the full BotSharp overview →
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Frequently asked questions
Is AstrBot or BotSharp more popular?
AstrBot has 45,662 GitHub stars and BotSharp has 3,116. AstrBot has the larger community by that measure.
Are AstrBot and BotSharp free?
Both are open source. AstrBot is licensed under AGPL-3.0 and BotSharp under Apache-2.0. Neither carries a licence fee.
What is the difference between AstrBot and BotSharp?
AstrBot 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, AstrBot or BotSharp?
Choose AstrBot if you want the larger community (45,662 stars) or its AGPL-3.0 licence terms. Choose BotSharp if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.