Secure Delete

Active@ Kill Disk is disk eraser software for secure formatting of hard drives without any possibility of following data recovery.

Blancco Drive Eraser is patented secure data erasure for HDDs and SSDs. Digitally signed certificate of erase for auditing. Free evaluation license.

Disk Wipe is Free, portable Windows application for permanent volume data destruction. With Disk Wipe you can erase all disk data and prevent recovery of those data. Formatting a hard drive with regular method leaves an open possibility to recover the data back.

File Shredder is a FREE and powerful application to shred and permanently remove unwanted files from your computer.

SDelete, short for Secure Delete, is a command-line based data destruction tool and can be run from the Command Prompt in Windows 7, Vista, or XP.