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Sequoia PGP vs Kleopatra: catalog facts
Sequoia PGP	Kleopatra
Free Free and open source.	Free Free and open source.
Linux, Command line	Linux
Written in memory-safe Rust Usable both as a library and through the sq command-line tool	Handles both OpenPGP and S/MIME certificates Key lookup through key servers, LDAP and WKD
Command-line only, with no graphical interface Much of the project is aimed at developers rather than end users	Certificate concepts can be daunting for newcomers
Downloadable app	Downloadable app
Open source	Open source
License: LGPL-2.0-or-later	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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