Tomb is described as '100% free and open source system for file encryption on GNU/Linux, facilitating the backup of secret files. Tomb is written in code that is easy to review and links commonly shared components' and is an app. There are more than 10 alternatives to Tomb for a variety of platforms, including Linux, Windows, Mac, Android and BSD apps. The best Tomb alternative is VeraCrypt, which is both free and Open Source. Other great apps like Tomb are Cryptomator, Picocrypt, LUKS and DroidFS.
The AVGVSTO project by Roy Merlo and RPX is an open-source advanced encryption tool developed in Python. It is designed to protect sensitive data by physically binding it to an authorized USB drive, making decryption possible only when the device is connected.
A free and open-source file encryption software for Linux, Windows and Mac that encrypts/decrypts files so they can be stored securely, utilizing compression, Reed–Solomon Error Correction, encryption and keys derived from the user's password with Argon2id.
Cryptmount is a powerful utility that allows any user to access encrypted filesystems on-demand under GNU/Linux systems without requiring root privileges.It requires Linux 2.6 or higher. It handles both encrypted partitions as well as encrypted files.
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