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GpgFrontend vs Kleopatra: catalog facts
GpgFrontend	Kleopatra
Free Free and open source.	Free Free and open source.
Windows, macOS, Linux	Linux
Choice of GnuPG or Rust rPGP engine Encrypts files, text and email from one app	Handles both OpenPGP and S/MIME certificates Key lookup through key servers, LDAP and WKD
Users still need to understand OpenPGP key exchange	Certificate concepts can be daunting for newcomers
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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