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Encryption program based on the Blowfish encryption algorithm designed by Bruce Schneier.

Provides a free web-based email system (client/server, GNU) and service.

The aCrypt software allows the user to encrypt files and send them via email to others without the software.

A small and powerful freeware utility for encrypting files with the AES algorithm.

Multiple ciphers and key manager integrated with the Windows shell.

Freeware file and message encryption tool

Web form to encode and decode ROT13, a simple letter substitution encryption scheme.

Professional task manager which allows for automatically performing various security-related tasks, such as automatic encryption, wiping, and system cleanup.