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PGPTool vs GpgFrontend: catalog facts
PGPTool	GpgFrontend
Free Free to download and use.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
Compatible with the OpenPGP specification Suggests encryption and decryption settings from previous actions	Choice of GnuPG or Rust rPGP engine Encrypts files, text and email from one app
Requires a separately installed Java Runtime Environment 17 or later Non-Oracle JREs need JAVA_HOME set or the ZIP package on Windows	Users still need to understand OpenPGP key exchange
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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