siyuan
About siyuan
SiYuan is a privacy-first, self-hosted personal knowledge management system designed for organizing and refactoring thoughts. It supports fine-grained block-level references and Markdown WYSIWYG editing. The software is fully open source, written in TypeScript and Go, and emphasizes local-first data storage.
SiYuan offers a range of features for note-taking, knowledge organization, and data synchronization. It includes tools for block-level referencing, Markdown editing, and various export options. The system is suitable for both personal and commercial use, with some advanced features available through paid memberships.
Key features
- Block-level reference and two-way links
- Markdown WYSIWYG editor
- Mathematical formulas, charts, and flowcharts
- Web clipping and PDF annotation
- Export to PDF, Word, and HTML
- Flashcard spaced repetition
- AI writing and Q/A chat via OpenAI API
- Docker deployment and API support
Download v3.7.2
Jul 14, 2026LinuxLinux
AndroidAndroid
Frequently asked questions
- Is siyuan free?
- Yes. siyuan is free and open-source software, distributed under the AGPL-3.0 license.
- Which platforms does siyuan support?
- siyuan provides downloads for Windows, macOS, Linux, Android.
- What is the latest version of siyuan?
- The latest version is v3.7.2, released on Jul 14, 2026.
- Is SiYuan open source?
- Yes, SiYuan is fully open source under the AGPLv3 license.
- How does SiYuan store data?
- SiYuan emphasizes local-first data storage, ensuring privacy and control over your data.
- Does SiYuan support data synchronization through a third-party sync disk?
- Yes, SiYuan supports data synchronization through third-party sync disks.
- Do I need to pay for SiYuan?
- Most features are free, even for commercial use. Some advanced features require a paid membership.
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