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PicocryptFileKey
Free

Free and open source, no longer developed.

 Free

Free and open source.

Windows, macOS, Linux Web
  • XChaCha20 and Argon2id, with a design deliberately small enough to audit
  • Standalone portable executable on Windows, with no installation
  • Uses passkeys, so there is no password to remember
  • Encryption happens on the device
  • Permanently archived and read-only since September 2025; there will be no more releases
  • Encrypts individual files, not partitions, drives or cloud folders
  • Depends on browser and device passkey support
  • Losing both the passkey and recovery code means losing access
Downloadable app Web application
Open source Open source
License: GPL-3.0 License not stated
No account needed No account needed
Works offline Not stated if it works offline

Checked September 20, 2026

Checked October 2, 2026

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