Siyuan
Privacy-first personal knowledge management system with block refs and backlinks
Last Updated
2026-06-16
GitHub Stars
44,470
Last Updated
2026-06
About Siyuan
Verdict
A polished, privacy-first knowledge management system with strong block-referencing. Its local-first design and large community make it ideal for users who want an Obsidian-style experience that is fully open source.
Features
Detailed Ratings
Pros & Cons
Pros
- Active community with 44.5k GitHub stars
- Content block
- Custom attributes
Use Cases
Who Is It For?
Knowledge workers who want a local-first, open-source alternative to Obsidian with block references and bidirectional links.
Frequently Asked Questions
What is Siyuan?
Siyuan is an open-source, privacy-first personal knowledge management system. It supports Markdown formatting, block-level references, and bidirectional links, with local-first storage so your notes stay under your control. Suitable for building connected personal knowledge bases and digital gardens.
How much does Siyuan cost?
Siyuan is open-source and free to self-host. See https://github.com/siyuan-note/siyuan for installation instructions.
Is Siyuan open source?
Yes — Siyuan is open source with 44.5k stars. The source code is on GitHub at https://github.com/siyuan-note/siyuan.
Who should use Siyuan?
Teams and individuals looking for research and information synthesis who value open-source flexibility and control.
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Links & Resources
Profiles are AI-assisted from public information — not independently hands-on tested.