SiYuan
Privacy-first personal knowledge management system with block-level editing, bidirectional links, and local storage for
Recommended for
- Solo / Indie
- Idea-Stage
- Pre-Seed
SSIE
Stage Fit Recommendations
Following data shows why SiYuan is recommended for listed teams. The Fit Score represents the percentage fit of SiYuan to each company stages, as calculated by the SSIE.
Stage
Fit Score
Fit Reasons
Solo / Indie
$0–$2,000 MRR
70- Store data locally under user control
- Organize content at block-level granularity
- Edit million-word documents via dynamic loading
Idea-Stage
$0
86- Improve memory with FSRS spaced repetition
- Link databases bidirectionally via relations
- Access OpenAI for writing and translation
Pre-Seed
$0–$10k MRR
72- Sync data end-to-end encrypted across devices
- Deploy personal cloud notes via Docker
- Use mobile server in local networks
SiYuan is a privacy-first personal knowledge management system that supports Markdown, block-level references, and bidirectional links. The core concept is content blocks, with 20+ block-level elements and 10+ span-level elements for rich typesetting needs. It features zoom-in block focus, dynamic loading for documents with millions of words, and end-to-end encrypted sync. The app includes spaced repetition flashcards using the FSRS algorithm to improve memory efficiency and learning outcomes. Database functionality supports relations, rollups, and templates for structured data organization. Local storage is fully free, with optional paid tiers offering third-party S3/WebDAV sync interfaces and 8GB official cloud storage.
Pricing
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