Selected File: Eraser Secure File Eraser by  Sami Tolvanen / Garrett Trant
available versions:
Eraser v5.70 by Garrett Trant
Eraser v5.30 by  Sami Tolvanen
Eraser v5.30 GNU Source Code

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.  The patterns used for overwriting are based on Peter Gutmann's  paper "Secure Deletion of Data from Magnetic and Solid-State  Memory" and they are selected to effectively remove magnetic remnants from the hard drive.
Other methods include the one defined in the National Industrial Security Program Operating Manual of the US Department of Defense and overwriting with pseudorandom data. You can also define your own overwriting methods. Its free to use.

http://www.heidi.ie/eraser/download.php