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CryptomatorCryptSync
Freemium

The desktop apps are free and open source. The Android and iOS apps are paid, and…

 Free

Free and open source.

Windows, macOS, Linux, Android, iOS Windows
  • Works with cloud storage you already have rather than replacing it
  • Encrypts file names as well as file contents with AES and a 256-bit key
  • Keeps a plain folder and an encrypted folder in step automatically
  • Works with any cloud sync client
  • Mobile apps are separate paid purchases, unlike the free desktop apps
  • A vault behaves like a virtual drive, so some apps that assume local files behave oddly
  • Windows only
  • Encrypts file by file rather than hiding folder structure in a container
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License: GPL-3.0
No account needed No account needed
Works offline Works offline

Checked September 20, 2026

Checked October 1, 2026

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