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LockbookNotesnook
Freemium

The free plan includes 25 MB; the 30 GB plan costs $2.99 monthly.

 Freemium

A free tier covers unlimited notes and sync across devices. A paid Pro subscription adds…

Windows, macOS, Linux, Android, iOS, Command line Windows, macOS, Linux, Android, Web
  • End-to-end encryption for stored files
  • Supports notes, sketches, and other files
  • End-to-end encrypted on device with XChaCha20-Poly1305 and Argon2, so the service holds no readable data
  • The full client codebase is published, which makes the privacy claim auditable
  • Free storage is limited to 25 MB
  • The project describes itself as being in open beta
  • An account is required; it is a sync service, not a local-only app
  • Encryption means no server-side search, and losing your password loses the notes
Downloadable app, Hosted service Downloadable app, Web application
Closed source Open source
License: Unlicense License: GPL-3.0
Not stated if an account is needed Account needed
Works offline Works offline

Checked October 8, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.