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KGpg vs Hideout: catalog facts
KGpg	Hideout
Free Free and open source under the GPL.	Free Free and open source under the MIT licence.
Linux	Linux
Simple interface over GnuPG Shows signatures, trust and expiry at a glance	Simple interface for a single task Built on the established GnuPG toolchain
Linux only Fewer features than Kleopatra, with no S/MIME support	Linux only Small project with a single developer
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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