Diskdeleter - Diskdeleter is data removal software that helps protect your privacy by securely deleting data from your hard drive.
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
ABAN - ABAN is a boot CD/USB stick for securely wiping all the disks in a computer.
DriveStrike - Remote Wipe on any operating system in one place using DriveStrike. Data Breach Protection for your laptop, smartphone, and tablet.
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!