These tool can be used for multipurpose system cleaning purposes and can be customized to clean data according to the DoD or NSA wiping standards.

1. Hanjian File Bomb: Anti-Forensics software to securely delete any file. Hanjian File Bomb is a small and easy to use application that allows you to erase data completely. Elimination of data with this software is completely secure and will not be recoverable.
Requirements:
NET Framework 2.0
Operating systems supported:
XP / 2003 / Vista / 2008 / 7

Download Hanjian File Bomb v1.1 here

2. Shred It! – Search and Destroy: This program allows the user to search thecomputer for any files / folders and registry entries that have a certain keyword in it, and destroy those searched components. The user can either search for files andregistry entries with an exact name, or can search for files and registry entries that have a word or phrase in it. The user can choose weather or not he/she wants to search and destroy registry entries, and when the user clicks the option to search and destroy registry, it advises first that its feature is only for advanced users, and that if used wrongly, it could cause system damage. The user can also choose weather or not he/she wants the program to search and destroy running process’s containing the search word. This also has a warning message pop up before allowing the user to use the option.
Allowing the program to search and destroy running process’s with the searched word/phrase, can help in situations where a virus/malware .exe keeps launching itself and running in the background, making it hard for virus protection programs to kill. With this option enabled, it will constantly kill the exe’s process before it can launch, while the program searches the computer and destroys the virus file, and its companion files.
Operating systems supported:
Windows ME / NT / XP / Vista / XP X64 / Vista64 / 7

Download Shred It v0.1 here

3. DeleteAll: DeleteAll is, as the name suggests a small, simple application designed to delete all the files (and optionally all files in subdirectories) in the current directory. Useful when some files are protected / are in use and cannot be deleted by selecting all and simply delete them – in this case Windows will stop if it cannot delete a file. This program will leave them untouched but will delete every other files.
Operating systems supported:
Windows all versions.

Download DeleteAll v 2010.12.29 here

4. Rumie: Rumie can be used for safe data discard, because everytime you delete file from disk they are not really removed but only marked as deleted one, so that this removed file or its part can be restored. You have minimal chances of getting back files deleted with Rumie.

Download Rumie v1.27 here

5. Dustbin: Easily search for useless data on disk and safely remove them. Dustbin is a freeware tool developed to quick and smart search for useless data on disk and remove them safe. Dustbin will be very useful if you have a large amount of programs with many temporary files.

Download Dustbin v1.491 here

6. 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. Eraser is currently supported under WindowsXP (with Service Pack 3), Windows Server 2003 (with Service Pack 2), Windows Vista, Windows Server 2008, Windows 7 and Windows Server 2008 R2. Eraser is Free software and its source code is released under GNU Public License.

Download Eraser v6.0.8.2273 here.

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Tools to Securely Delete your Data and Make it Unrecoverable!