Knowledge & Docs Notes App stable
SiYuan
Privacy-first local-first block-based note-taking
26.0K stars
Since 2020
Privacy-focused note-taking with block-based editing, bidirectional links, local-first storage, end-to-end encrypted sync, and SQL queryable content.
License
AGPL-3.0
Min RAM
256 MB
Min CPUs
1 core
Scaling
single_node
Complexity
intermediate
Performance
medium
Self-hostable
✓
K8s native
✕
Offline
✓
Pricing
fully free
Docs quality
good
Vendor lock-in
none
Use cases
- ✓ Private knowledge base with encrypted cloud sync
- ✓ Block-based note organization with SQL queries
- ✓ Bidirectional linking for knowledge graph
Anti-patterns / when NOT to use
- ✕ Less polished than Notion
- ✕ Sync requires paid subscription
- ✕ Smaller plugin ecosystem
- ✕ Chinese-origin — some docs not fully translated
Compare with alternatives
Replaces / alternatives to
Technical specs
Language
GoTypeScript
API type
REST
Protocols
HTTP
Deployment
dockerbinary
Community
GitHub stars 26.0K
Contributors 0
Commit frequency weekly
Plugin ecosystem none
Backing B3log
Funding community
Release
Latest version
— Last release —
Since 2020
Best fit
Team size
solosmall
Industries
general