Siyuan
An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 、 、 ，
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About Siyuan
Siyuan is listed in our frameworks category and is aimed at builders. An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 、 、 ， Pricing, as the maker states it: Open source + cloud. Maturity: Mature. We last checked the official link on 2026-10-28.
Siyuan at a glance
- Category: Frameworks
- Built for: Developers and teams building with AI agents
- Pricing: Open source + cloud (as the maker states it)
- GitHub: siyuan-note/siyuan · 46,982 stars (as of Oct 28, 2026)
- Official site: b3log.org/siyuan
- Listed on AgentScout: Oct 28, 2026
Siyuan FAQ
What is Siyuan?
An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 、 、 ，
How much does Siyuan cost?
Siyuan's pricing, as the maker states it: Open source + cloud. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Where can I find Siyuan's source code?
On GitHub at siyuan-note/siyuan, which had 46,982 stars as of Oct 28, 2026.
What are alternatives to Siyuan?
Similar tools include Ruflo, OpenFang, Open Agents, II-Agent, FrontierAgent and Toonflow App.
Facts from our link-checked listing, the GitHub repository and the official site. See something wrong? Suggest an edit.
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