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The Worlds Most Efficient Free Defragmentation Software

IObit SmartDefrag helps defrag your hard drive most efficiently. With Install it and forget it feature, IObit SmartDefrag works automatically and quietly in the background on your PC, keeping your hard disk running at its speediest.

100% safe from any spyware, adware and virus. Distribute it freely, copy it, sell it or include it as part of a package – as long as it is left completely intact and unchanged.

Windows Vista, XP and 2000.