Darik's Boot and Nuke - Erase hard drives, desktops, laptops or servers free with a Darik's Boot and Nuke (DBAN) download. Try it now.
Blancco Drive Eraser - Hard Drive Erasure Software
Active@ KillDisk - Active@ KillDisk allows you to destroy all data on hard and floppy drives completely, excluding any possibility of future recovery of deleted files and folders.
Wiperapp - Software build to meet all needs of companies dealing with erasing data on daily basis.
Permadelete - Permadelete is an easy-to-use and beautiful app for windows that can delete files and folders...
HDShredder - HDShredder by Miray Software deletes entire hard disks, partitions or other storage media securely and according to international standards if desired. Safely recycle your hard drive!