Open WebUI vs SiYuan
Side-by-side comparison of two AI agent tools
Open WebUIfree
User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
S
SiYuanopen-source
An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 开源、隐私优先、自托管的知识工作空间，让人与智能体在此协作
Metrics
| Open WebUI | SiYuan | |
|---|---|---|
| Stars | 153.6k | 46.6k |
| Star velocity /mo | 4.0k | 3.9k |
| Commits (90d) | 1.5k | 4.9k |
| Releases (6m) | 10 | 10 |
| Overall score | 0.8866821538036601 | 0.9271708503527412 |
Pros
- +Multi-provider AI integration supporting both local Ollama models and remote OpenAI-compatible APIs in a single interface
- +Self-hosted deployment with complete offline capability ensuring data privacy and security control
- +Enterprise-grade user management with granular permissions, user groups, and admin controls for organizational deployment
Cons
- -Requires technical expertise for initial setup and maintenance of Docker/Kubernetes infrastructure
- -Self-hosting demands dedicated server resources and ongoing system administration
- -Limited to local deployment model, lacking the convenience of managed cloud AI services
Use Cases
- •Enterprise organizations deploying private AI assistants with strict data governance and user access controls
- •Development teams building local AI workflows with multiple model providers while maintaining code and data privacy
- •Educational institutions providing students and faculty with controlled AI access without external data sharing
FAQ
- Which is more popular, Open WebUI or SiYuan?
- Open WebUI has more GitHub stars (153,644 vs 46,580).
- Which is more actively developed, Open WebUI or SiYuan?
- SiYuan had more commits in the last 90 days (4,873 vs 1,515).
- Should I use Open WebUI or SiYuan?
- Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.