Systerac Tools for Windows 7
This bundle of 16 tools from Systerac has utilities you need to keep Windows 7 running smoothly. You can tweak Windows' performance and appearance, optimize memory, clean up the hard drive, cover your tracks by shredding files, and so on. The Systerac interface is aesthetically appealing, nicely organized, and a snap to learn. The $20 Windows 7 version runs on Vista as well.
Note: This link takes you to the vendor's site, where you can download the latest version of the software.