KeePassXC - KeePass Cross-Platform Community Edition - A community maintained fork of the popular KeePassX...
Exocet - Exocet creates a Folder on your System.
Kleopatra - Kleopatra is a certificate manager and GUI for GnuPG.
Advanced File Security Basic - Download Advanced File Security Basic. Protect files by encrypting them with a strong password, a series of questions, or even an USB key you can carry around with this powerful security solution
Seahorse - Front end for GnuPG.
Kruptos - Lock and encrypt your photos, movies, files and folders using 256-bit file encryption.