File / Disk Erasers

DBAN Boot and Nuke

Darik's Boot and Nuke (DBAN) is a self-contained boot floppy that securely wipes the hard disks of most computers. DBAN will automatically and completely delete the contents of any hard disk that it can detect, which makes it an appropriate utility for bulk or emergency data destruction.

Eraser

Eraser is an advanced security tool (for Windows), which allows you to completely remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns.

Wipe Disk

This little utility provides a measure of security for your documents by overwriting the unused and erased space on a drive.

Secure Delete

This program allows you to specify a directory (and optionally all subdirectories) in which all files should be deleted. When each file is deleted the contents of the file are filled with random data prior to deleting the file.

Autoclave v0.3

Autoclace is supposed to securely erase all the files, all the free space, the partition table, the boot sector, etc. This includes the operating system and any preinstalled packages your hardware vendor may have included on the drive when you got it. When Autoclave is done running, you should have a hard drive filled with zeros, and nothing else.

Overwrite (Unix)

Overwrite is a UNIX utility that tries to make data recovering harder. What overwrite does is to overwrite files using random patterns and deterministic patterns.

Wipe (Linux)

Wipe is a secure file wiping utility.