ABC CHAOS
- http://www.safechaos.com/abc.htm
- A program which is able to encrypt and decrypt files of every type and even whole directory structures using strong encryption.
SecureTask
- http://securetask.net
- Professional task manager which allows for automatically performing various security-related tasks, such as automatic encryption, wiping, and system cleanup.
TrueCrypt
- http://www.truecrypt.org/
- Open-source free on-the-fly disk encryption for Windows XP/2000. It can encrypt partitions or create virtual encrypted disks within files. Implemented ciphers: AES-256, Blowfish (448-bit key), 3DES, Serpent, Twofish. Provides plausible deniability.