head to head · open source
Open WebUI vs BotSharp
Open WebUI has 157,575 GitHub stars, 22,923 forks, 294 open issues and last shipped yesterday. BotSharp has 3,116 stars, 657 forks, 48 open issues and last shipped yesterday. Open WebUI leads on adoption by 4,957% (157,575 vs 3,116 stars). Open WebUI is written in Python under a custom or non-standard licence; BotSharp is written in C# under Apache-2.0. Open WebUI has attracted 15% as many forks as stars, BotSharp 21%. Open WebUI was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | BotSharp | |
|---|---|---|
| GitHub stars | ★ 158K | ★ 3.1K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | C# |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 23K | ⑂ 657 |
| 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 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 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 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 Open WebUI or BotSharp more popular?
Open WebUI has 157,575 GitHub stars and BotSharp has 3,116. Open WebUI has the larger community by that measure.
Are Open WebUI and BotSharp free?
Both are open source. Open WebUI has no licence declared in this registry, and BotSharp is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Open WebUI and BotSharp?
Open WebUI 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, Open WebUI or BotSharp?
Choose Open WebUI if you want the larger community (157,575 stars) or its Custom / other licence terms. Choose BotSharp if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.