Founded
2019
Starting Price
$0
Category
Productivity
Last updated April 27, 2026
About Notesnook
Notesnook is an open-source, end-to-end encrypted note-taking app designed as a privacy-first alternative to Evernote and Notion. It uses XChaCha20-Poly1305 and Argon2 encryption to ensure zero-knowledge privacy, available across all major platforms with automatic cross-device sync.
Pros & Cons
Pros
- True end-to-end encryption means even developers cannot access your data
- Fully open-source clients and server enabling independent security audits
- Cross-platform availability with seamless automatic sync
- Affordable pricing with Pro at $69.99/yr — cheaper than most competitors
- Modern, clean interface with attractive themes and intuitive design
Key Features
End-to-End Encryption
Zero-knowledge encryption using XChaCha20-Poly1305 and Argon2 ensures only you can read your notes
Cross-Platform Sync
Automatic synchronization across Windows, macOS, Linux, iOS, Android, and web browsers
Rich Text Editor
Full-featured editor supporting markdown, checklists, tables, images, and attachments
Note Vault
Lock sensitive notes behind an additional password layer for extra security
Bidirectional Note Linking
Link notes together for wiki-style knowledge navigation
Web Clipper
Save content from the web directly into your encrypted notebook
Notebooks & Tags
Organize notes with nested notebooks, tags, colors, and favorites
Open Source
Pricing
Free
$0
- 50MB/mo uploads
- 50 tags and notebooks
- 100 note versions
- Vault access
- All export formats
Best For
Privacy-Focused Personal Notes
Keep a private, encrypted journal or personal knowledge base without corporate surveillance
Journalist Source Protection
Protect sensitive notes, sources, and story drafts from unauthorized access
Legal & Healthcare Documentation
Store confidential client or patient notes with strong encryption compliance
Secure Academic Research
Organize study notes and research findings with privacy and cross-device access
