GnuPG
OpenPGP implementation for encryption, signing, and key management.
Why it is included
Ubiquitous in release signing and email encryption integrations.
Best for
Developers, organizations, and users with trained key hygiene.
If you use Windows, Mac, or paid tools
OpenPGP alternative to commercial Outlook encryption add-ons and some S/MIME-only suites.
Strengths
- Standards-based crypto
- Release signing ecosystem
Limitations
- UX is hard for casual users
Good alternatives
age
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