002 is an update of Parisien Encryption Tools (PET) and is a file encryption system that uses the AES Encryption Algorithm. It includes a Secure File Wipe utility for permanently removing files. Available also as a portable application.
Secure password storage, Blowfish encryption.
Project pages on Sourceforge
AES Crypt is a file encryption software available on Linux/Mac/Windows that uses the industry standard Advanced Encryption Standard (AES) to easily and securely encrypt files.
Silver Key Free Edition
What if you want to send sensitive information to someone via email and they have no encryption software installed? Free Silver Key creates a self-extracting encrypted file you can send via email. All the recipient needs is the password to open the file. Both an installable and a portable version are available.