Purge

Purge is a program that allows you to delete files from your computer the way, it won't be possible to recover them using any file recovering software or even by giving your harddrive to the professional company that specialize in data recovering. Purge will permanently erase these files from your hardrive, by overwriting their's content with random data, sector by sector. You can use Purge to destroy the content of any file on your hard drive.

A program for secure file deletion and disk wipe which destroys (or purges, by overwriting) data in files on floppy, ZIP or hard disk so that the data cannot be recovered. A single file can be purged or, in batch mode, multiple files (in multiple folders) can be purged in one operation. Allows user-specifiable type of purge. Purge speed can be tested for accurate estimation of purge times.