SiYuan
A privacy-first, block-based personal knowledge system with strong offline and sync
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At a glance
What it does
A private block-based note system built for control, structure, and offline work.
Detailed overview
SiYuan is serious local-first note organization for people who want structure and control. Block-level references, Markdown/WYSIWYG support, offline-first behavior, and a much stronger technical edge than most consumer note apps set it apart. It is far less visible in English-language circles than its quality would justify, so power users, researchers, developers, and local-first enthusiasts treat it as a hidden gem. Development is active: the privacy policy names Yunnan Liandi Technology Co., Ltd. as developer, the GitHub releases page shows recent releases, the community page is live, and the pricing page discusses sync/storage options. The ecosystem is less accessible for a mainstream audience.
Key features
- Block-level references
- Markdown and WYSIWYG
- Offline-first and local
- Private end-to-end sync
Who it's for
Best suited for developers looking for note taking tools. A privacy-first, block-based personal knowledge system with strong offline and sync
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