head to head · open source
Open WebUI vs LLamaSharp
Open WebUI has 152,426 GitHub stars, 22,301 forks, 294 open issues and last shipped today. LLamaSharp has 3,798 stars, 508 forks, 22 open issues and last shipped 6 days ago. Open WebUI leads on adoption by 3,913% (152,426 vs 3,798 stars). Open WebUI is written in Python under a custom or non-standard licence; LLamaSharp is written in C# under MIT. Open WebUI has attracted 15% as many forks as stars, LLamaSharp 13%. Open WebUI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (llm), 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
| Open WebUI | LLamaSharp | |
|---|---|---|
| GitHub stars | ★ 152K | ★ 3.8K |
| License | Custom / other | MIT |
| Written in | Python | C# |
| Last push | 2026-09-18 | 2026-09-12 |
| Forks | ⑂ 22K | ⑂ 508 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Open WebUI if
- You weight community size — 152K 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 LLamaSharp if
- You want the LLamaSharp feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and LLamaSharp fits your workflow better
About Open WebUI
Open WebUI is a self hosted, open source AI interface that unifies access to local and cloud based large language models. It runs entirely in a web browser and supports Ollama for local model hosting alongside any OpenAI compatible API, including services like LMStudio, GroqCloud, Mistral, and OpenRouter. Built in Python, it functions as a drop in replacement for proprietary AI platforms, giving users full control over their model infrastructure and data.
read the full Open WebUI overview →
About LLamaSharp
LLamaSharp is a cross platform library to run 🦙LLaMA model (and others) on your local device. Based on llama.cpp, inference with LLamaSharp is efficient on both CPU and GPU. With the higher level APIs and RAG support, it's convenient to deploy LLMs (Large Language Models) in your application with LLamaSharp. Please star the repo to show your support for this project!🤗 Table of Contents Documentation Console Demo Integrations & Examples Get started FAQ Contributing Join the community Star history Contributor wall of fame Map of LLamaSharp and llama.cpp versions 📖Documentation Quick start Ask AI via deep wiki FA…
read the full LLamaSharp overview →
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Frequently asked questions
Is Open WebUI or LLamaSharp more popular?
Open WebUI has 152,426 GitHub stars and LLamaSharp has 3,798. Open WebUI has the larger community by that measure.
Are Open WebUI and LLamaSharp free?
Both are open source. Open WebUI has no licence declared in this registry, and LLamaSharp is licensed under MIT. Both are free to self-host.
What is the difference between Open WebUI and LLamaSharp?
Open WebUI is written in Python and LLamaSharp 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 LLamaSharp?
Choose Open WebUI if you want the larger community (152,426 stars) or its Custom / other licence terms. Choose LLamaSharp if its feature set, stack or MIT licence fits better. Both are self-hostable.