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OpenKeychainGpg4win
Free

Free and open source, supported by donations.

 Free

Free software, funded by donations and public contracts.

Android Windows
  • Compatible with OpenPGP software on other platforms
  • Provides encryption to other Android apps such as K-9 Mail
  • Kleopatra gives GnuPG a real key manager instead of a command line
  • Integrates with Outlook through GpgOL and with Explorer through GpgEX
  • Android only
  • Using OpenPGP keys well requires some understanding of how key exchange works
  • Windows only
  • OpenPGP key management is genuinely hard, and the concepts do not hide well behind a GUI
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License: GPL-2.0
No account needed No account needed
Works offline Works offline

Checked September 23, 2026

Checked September 20, 2026

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