PCWash 

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.
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Active Kill Disk - Hard Drive Eraser 

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
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