SafeDelete

SafeDelete is an advanced security tool for Windows that 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 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 U.S. Department of Defence, and overwriting with pseudorandom data. You can also define your own overwriting methods.

Features:
     Delete any file using a variety of overwrite patterns..
     Comply with the Department of Defense and the Gutmann overwipe pattern.
     Ability to encrypt and decrypt files using the super-strong AES 256-bit       encryption.

System Requirements:
     Windows 98/ME/NT4/2000/XP/2003.
     .NET Framework Version 1.1.

Hardware Requirements:
     Intel Pentium II 350MHz or above.
     64 MB RAM or above.