Disk Investigator helps you to discover all that is hidden on your computer hard disk. It can also help you to recover lost data.
HDClone Free Edition 4.1.2b (Windows)
KeyScrambler Personal 2.9.0.1 (Windows)
Disk SpeedUp 1.4.0.888 (Windows)
Analyze, defrag and optimize disks or a single file/folder for peak computer performance.
TweakNow PowerPack 2011 3.4.7 (Windows)