Disk fragmentation is generally main cause of slow and unstable computer performance. Smart Defrag helps defragment your hard drive most efficiently. Smart Defrag not only defragments computer deeply but optimizes disk performance. With "Install it and forget it" feature, Smart Defrag works automatically and quietly in the background on your PC, keeping your hard disk running at its speediest. Slow down, freeze-ups and crashes will be a thing of the past. Smart Defrag is 100% free for home, organization, and business.

What's new

+ Improved disk map and color legend
+ Added "Fast Optimize"
+ Fully supported Windows XP/Vista 64bit edition
* Fixed general bugs