Free download 3.8M
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. Smart Defrag is complete free for home, organization, and business.
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100% 
0% (1 votes) 
Hewlett Packard
I find the program is very good for defragging but only works once after install on my Vista 64bit. If I want to use it again I have to uninstall and reinstall. On my other PC (Vista 32bit) it works well.