1)   Active Kill Disk - Hard Drive Eraser 2.0
Active KillDisk is a quality security application that destroys data permanently from any computer that can be started using a DOS floppy disk. DoD 5220.22-M compatible

 2)   PCWash 3.0
Simply, safely and securely erase the secrets your computer is keeping about you. PCWash erases/deletes index.dat, internet history, cookies, and more. Easy to use and customize to clean only what you want. Automatic scheduler included.

 3)   WipeDrive 3.1.1
Wipe your hard drive completely clean. Use WipeDrive to wipe all data from your computer and start fresh with a clean hard drive. Deleting a file or formatting your hard drive will not erase sensitive data. Prevent identity theft with WipeDrive.