- Quick specs
- Price: Free
- Operating system: Windows 2003, Windows Vista, Windows Me, Windows Server 2008, Windows NT, Windows 7, Windows XP, Windows 2000, Windows 98
- Date added: November 25, 2009
- Total Downloads: 6,185,286
- Downloads last week: 102,708
- See full specifications
- CNET editors' rating: stars
- Average user rating: stars out of 1246 votes
See all user reviews -

CNET editors' review
Reviewed by: CNET Staff
It's hard to stand out in the crowded field of defraggers, but SmartDefrag is able to do so with an unexpected twist.
Along with quick analysis and scans, SmartDefrag boasts an automated defragger that continually defrags the files that you use the most, and does it without becoming a persistent drag on your system resources. When running in the background, the program only eats up 14MB of RAM, so it's possible to run it smoothly on older machines.
Other features we like include a scheduler you can set up to defrag whenever you want and some customization features if you want the program to start when Windows loads or right before logging off. You also can set it to shutdown your computer when it's done defragging your hard drives and partitions.
Overall, if you would like a handy defragger with options for scheduling and more, this is a great defragger for both novices and more experienced users.
Publisher's description
From IObit :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.
What's new in this version:
Version 1.30 adds auto-defrag choosed volumes, IObit Toolbar.More popular System Utilities downloads
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User reviews
- Average user rating: 0 stars Not yet available
- My rating: 0 stars Write review
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Showing 2 of 2 user reviewsSee all 2 user reviews
This software version | All versions -
Version: Smart Defrag 1.30
Pros: It doesn't take long to install, runs fairly simply, scans quickly.
Cons: Haven't noticed any sofar.
Summary: It runs as advertised and it's free (have only tried v.1.2)!
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Version: Smart Defrag 1.30
Pros: Zero pro rating. Can't give a pro rating to something that doesn't work.
Cons: I picked 1 star only because I couldn't pick zero star.
Summary: Program installer displayed corrupt file error both times I attempted to run app.
- See all 2 user reviews Write review
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