Mutilate File Wiper 

Mutilate File Wiper is an easy to use file eraser that shreds sensitive files so they cannot be recovered or undeleted. For additional security, Mutilate's disk free space wiper will destroy previously deleted files on your hard drive.
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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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