siyuan-note/siyuan
An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 开源、隐私优先、自托管的知识工作空间，让人与智能体在此协作 observed · 2026-08-28
Health v2 · maintenance only
95/100
- Activity 99
- Release rhythm 86
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 8.0
- age_days: 2194
- days_rel: 15
- days_push: 7
- n_releases_24m: 63
Adoption not part of the score
45994 stars · 2963 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
SiYuan is a privacy-first, local-first note-taking and personal knowledge management application built around block-level editing, bidirectional links, and Markdown. It supports self-hosted deployment via Docker, end-to-end encrypted sync through S3/WebDAV, and AI agent collaboration including MCP integration.
Use cases
- take notes with block-level editing and backlinks
- build a personal knowledge base with a knowledge graph
- self-host a private note-taking app with Docker
- sync notes across devices with end-to-end encryption
- use flashcards and spaced repetition for studying
- connect AI agents to my notes via MCP
- manage large documents with Markdown and WYSIWYG editing
When to choose
- you want a privacy-first, local-first alternative to Notion or Obsidian
- you need block-level editing with bidirectional links and backlinks
- you want to self-host your notes and sync via your own S3/WebDAV storage
- you want built-in flashcards, databases, and AI assistance in one workspace
When to avoid
- you need real-time collaborative editing like Google Docs
- you require a fully free official cloud sync service
- you only need a plain lightweight Markdown text editor
Facets
application · maturity active
markdown editor mcp self-hosted search-engine data-visualization developer-tools productivity privacy self-hosted cross-platform self-hosted windows note-taking pkm block-editor backlinks knowledge-graph local-first e2e-encryption spaced-repetition flashcards wysiwyg ai-agents sync knowledge-management desktop electron docker macos linux mobile
3 sources
- readme: https://github.com/siyuan-note/siyuan · fetched 2026-08-28 · 0cc5a551ba77
- homepage: https://b3log.org/siyuan · fetched 2026-08-29 · 2df3c6b18dd3
- site_page: https://b3log.org/siyuan/pricing.html · fetched 2026-08-29 · 41c38cf1c6f9
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| siyuan-note/siyuan | main | 95 |
For agents
markdown · JSON · MCP: product_card(name="siyuan-note/siyuan")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem