WipeFile!

Dariks Boot and Nuke ("DBAN") is a self-contained boot disk 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.

Permadelete is a free and open source file shredder, it deletes your files beyond recovery. It's made to be beautiful and easy to use and yet powerful.

With Context-Shredder you can destroy your sensitive files. Choose from simple destruction or shredding by Peter Gutmann. Users can create deletion tasks, overwrite available free space or destroy disk drives.

File Shredder is a FREE and powerful application to shred and permanently remove unwanted files from your computer.In File Shredder you can choose between 5 different shredding algorithms, each one gradually stronger than the previous one.It also has integrated Disk Wiper which uses shredding algorithm to wipe unused disk space.

HDShredder deletes the contents of hard disks and other mass storage media reliably at the physical level. HDShredder can also be applied to individual partitions and the user can select to perform the deletion according to international security standards. HDShredder works independent of partition layout, file sys­tem and operating system. It also works with proprietary formats which otherwise would be inaccessible.

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.

With xShredder you can destroy your sensitive files. Choose from simple destruction or shredding by Peter Gutmann 35 times.

BCWipe data wiping software enables you to permanently delete files selectively so that they can never be recovered or undeleted. BCWipe embeds itself within Windows and can be activated from the Explorer FILE Menu OR from the context (right-click) menu OR from BCWipe Task Manager OR from a command-line prompt. BCWipe complies with U.S. Department of Defense (DoD 5220.22-M) standard, U.S. Department of Energy (DoE M 205.1-2) standard and a set of other standard wiping schemes. You can also create and use your own customized wiping scheme to permanently delete files or wipe data and sensitive information from storage devices installed on your computer. »

When you normally delete your files in Mac OS X, the operating system is only forgetting where those particular files are placed, while the data still physically remains on the drive. Beginning with Mac OS 10.3, Apple enhanced its security by introducing the Secure Empty Trash feature, which follows the U.S. DoD pattern of overwriting data seven times.

Hardwipe is a free file wiper and drive cleaner for Windows. It can be used to permanently erase, or to "hard wipe", data on disk and portable storage media (i.e. USB drives and memory sticks) in order to prevent personal or sensitive business information from ever being recovered. It can wipe entire drives, wipe files individually, and sanitize unused drive space. It runs from within the OS and supports right-click context menus in Windows Explorer. Or you can simply use it as a standalone application if you prefer. »

O&O SafeErase gives you complete protection against unauthorized access to any confidential data you delete! No matter whether it’s outdated financial information, e-mail archives, or personal files, you can be sure that with O&O SafeErase this data will remain permanently deleted. That’s because O&O SafeErase doesn’t just delete data - it annihilates it, using six recognized and recommended deletion methods, including ones practiced by the U. S. Departments of Defense (DoD), and the German Department of Security in Information Technology (BSI). »

The easiest way to get rid of the sensitive data from a Mac before letting it go is to wipe it with Stellar File Eraser tool. It consists of 12 efficient Standard DoD wiping algorithms. It even wipes out locked files, give it a free trial.

AppleXsoft File Eraser is a user friendly and powerful data wipe software that allows you to permanently delete files on hard disks, USB drives completely. excluding any possibility of future recovery of deleted files and folders. AppleXsoft File Eraser can permanently erase any type of file, folders, such as photos, videos, word documents, excel, zip, PDF, and other types of sensitive file. Protect your privacy by permanently removing your files and prevent anyone from ever recovering them. It offers 14 different wipe methods to choose from including US Department of Defense and Peter Gutmann's method. »

WipeDisk erases physical and logical disks (complete harddisks or single partition) secure and fast.