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GnuPG vs scrypt: catalog facts
GnuPG	scrypt
Free Free and open source under the GPL.	Free Free to download, with source published on GitHub.
Windows, macOS, Linux, Command line	Command line
The reference free OpenPGP implementation, present everywhere Smartcard and hardware token support through its agent	Passphrase-based encryption with no key files to manage Key derivation is designed to resist hardware brute-force attacks
Key management and the command line are famously unforgiving Defaults and trust models confuse newcomers into unsafe practice	Symmetric passphrase encryption only, with no public-key support Command-line only
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
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 September 23, 2026

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