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GnuPG vs Hideout: catalog facts
GnuPG	Hideout
Free Free and open source under the GPL.	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Command line	Linux
The reference free OpenPGP implementation, present everywhere Smartcard and hardware token support through its agent	Simple interface for a single task Built on the established GnuPG toolchain
Key management and the command line are famously unforgiving Defaults and trust models confuse newcomers into unsafe practice	Linux only Small project with a single developer
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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