WipeDrive Personal 

Formatting your hard drive DOES NOT erase your data!
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Data Destroyer 

A program for secure file deletion and disk wipe which destroys (by overwriting) data in multiple files and multiple folders on floppy, ZIP or hard disk so that the data cannot be recovered. Single-file or batch-mode operation.
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BPS Data Shredder 

Shredder literally destroys files, free space and your Recycle Bin contents instead of only deleting them. That means your data contents one overwritten and destroyed and can't be recovered. Also includes a scheduler and multi language support.
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