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AttacheCase vs Picocrypt NG: catalog facts
AttacheCase	Picocrypt NG
Freemium Personal use is free with optional payment; commercial use requires a paid registration…	Free Free and open source under the GPL-3.0 licence.
Windows, macOS	Linux, Android, Command line
Encrypts both individual files and whole folders Available for Windows and macOS	Small and simple to use Command-line interface as well as a GUI
Website and documentation are mainly in Japanese macOS version is still in beta and cannot open AttacheCase 5 format files	A fork with a different maintainer team from the original Picocrypt Focused on files, not whole disks
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
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.