SiYuan
easyPrivacy-first personal knowledge management system with block-level references, built-in sync, and local-first storage.
0.5 GB RAM Docker Active AGPL-3.0 iOS & Android
Replaces
Pros
- Block-level references and backlinks
- Local-first with optional self-hosted sync
- Rich WYSIWYG editor with Markdown support
- Active development with frequent updates
Cons
- UI can feel complex for simple note-taking
- Documentation is primarily in Chinese
- Some features require a paid subscription
- Smaller English-speaking community
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