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SiYuan

SiYuan

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Last Updated:10/21/2025
Pricing:
FreeOne-time
Category:
Note TakerKnowledge Management ToolsPersonal Knowledge ManagementMarkdown EditorsLocal-First Note Apps
Connect:
OpenArt AI

OpenArt AI

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Base44

Base44

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Vidnoz AI

Vidnoz AI

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What is SiYuan

SiYuan is a personal knowledge management system that treats every piece of content as a block. These blocks can be linked, referenced, and organized in multiple ways. Unlike traditional note-taking apps, SiYuan gives you complete control by storing everything locally on your device.

The tool uses a block-based approach where even whole documents are treated as blocks. This makes it easy to split, move, and connect information without breaking existing links. You can create bidirectional links between ideas, use outlines to organize thoughts, and view your knowledge as a graph.

It includes features like mathematical formulas, charts, flashcards for learning, and database views. The app is self-hosted, meaning you own your data completely.

Features of SiYuan

  • Privacy-first with complete offline use

  • Block-level references and bidirectional links

  • Markdown editor with visual formatting

  • End-to-end encrypted sync

  • Spaced repetition flashcards

  • Database views with relations

  • Self-hosted deployment option

  • Multiple device support

  • Mathematical formulas and charts

  • Open source and free for local use

  • Graph view of knowledge connections

SiYuan Pricing

Most Popular
Free

Free

What's included:
  • All basic note-taking features
  • Block-level editing and references
  • Bidirectional links
  • Markdown WYSIWYG editor
  • Complete offline use
  • Unlimited local storage
  • Graph view
  • Database views
  • Spaced repetition flashcards
  • Free for commercial use
PRO Features

$64 once

What's included:
  • All Free features included
  • Third-party S3 integration for sync
  • Third-party WebDAV integration for backup
  • Connect your own cloud storage
  • One-time payment, use for life
  • No recurring fees
Subscription

$148 once

What's included:
  • All PRO features included
  • Official cloud sync service
  • 8GB official cloud storage space
  • Cloud Inbox for quick capture
  • Automatic data backup
  • End-to-end encrypted sync
  • Priority support
  • Limited seats available

SiYuan Use Cases

SiYuan Repository

View on Github
Stars45,618
Forks2,930
Repository Age5 years
Last Commit3 hours ago

FAQ's About SiYuan

Is SiYuan completely free to use?
Yes, SiYuan is completely free for local use with all core features including block editing, markdown support, and offline access. You only pay if you want cloud sync services or third-party storage integration. Even commercial use is free for local features.
How is SiYuan different from Notion or Obsidian?
SiYuan combines the best of both worlds. Like Obsidian, it stores files locally and works offline, giving you complete data ownership. Like Notion, it has database features and visual editing. The key difference is SiYuan's block-level approach where everything is a referenceable block.
Can I sync my notes across multiple devices?
Yes, SiYuan offers multiple sync options. You can purchase the official cloud sync subscription for $148 lifetime, or use the PRO package ($64) to connect your own S3 or WebDAV storage service for syncing.
Is my data secure in SiYuan?
Yes, SiYuan prioritizes privacy. All data is stored locally on your device by default. If you enable sync, the data is encrypted end-to-end, meaning only you can read it. Even the cloud service cannot access your unencrypted notes.
Can I use SiYuan for team collaboration?
Yes, you can deploy SiYuan on your own server using Docker and share access with your team through authorization codes. This allows multiple people to work on the same knowledge base while maintaining control over your data.
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