思源筆記 SiYuan

siyuan-note/siyuan

Block-based, local-first note-taking app with backlinks, database views and self-hosted sync, plus built-in AI and MCP so agents can read and write notes.

Why pick itBuilt by a Chinese team with strong Chinese typesetting and input-method support, fully self-hostable. A Chinese-friendly alternative to Notion and Logseq.

Install

or docker run b3log/siyuan

GitHub: siyuan-note/siyuan
Website: b3log.org
Stars: ★ 46.9k
License: AGPL-3.0
Language: TypeScript
Last push: Oct 25, 2026
Category: Notes & knowledge

Good for

Write block-based notes with block references and two-way links
Organize data with database table views and SQL query embeds
Use AI writing and Q&A through the OpenAI API
Review with spaced-repetition flashcards and export to Markdown, PDF or Word

Getting started

Run brew install --cask siyuan, or host it on a server with docker run b3log/siyuan
Create a notebook and start writing in blocks
For AI features, enter your OpenAI API details in settings

Before you install

Most features are free, even for commercial use, while some are for paid members; on desktop and mobile, installing from an app store is recommended for one-click upgrades.

Summarized by AI from the project docs; check the official docs before relying on it.

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