TrueCrypt is free open-source disk encryption software for Windows 7/Vista/XP, Mac OS X and Linux. In case an attacker forces you to reveal the password, TrueCrypt provides plausible deniability. In contrast to file encryption, data encrypt...
FreeOTFE: A free 'on-the-fly' transparent disk encryption program for PCs and PDAs. Using this software, you can create one or more "virtual disks" on your PC or PDA - anything written to these disks is automatically, and securely, encrypte...