- 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: July 02, 2009
- Total Downloads: 6,128,729
- Downloads last week: 88,588
- See full specifications
- CNET editors' rating: stars
- Average user rating: stars out of 1243 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.
Version 1.20 adds Auto-defrag all volumes feature.
What's new in this version:
- Added Auto-defrag all volumes
- Improved multi-language support
- Fixed general bugs
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User reviews
- Average user rating: 4.2 stars out of 1243 votes
- My rating: 0 stars Write review
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Showing 5 of 320 user reviewsSee all 320 user reviews
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1 out of 1 people found this review helpful
Version: Smart Defrag 1.20
"Good, but AusLogics is better"
Pros: It does indeed defragment your harddive
Cons: It doesn't work any faster or better than the one that comes with Windows
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1 out of 1 people found this review helpful
Version: Smart Defrag 1.20
"Not much better than Microsoft's."
Pros: Has more options than MS's, and provides more information.
Cons: MS's defrag said my C drive needed to be defragged, but was unable to do so. After defrag, there had been no change. Running Smart Defrag also did nothing notable. The 'C' drive still needed defragmenting. MyDefrag, on the other hand, worked.
Summary: No real improvement over MS's defragger.
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1 out of 2 people found this review helpful
Version: Smart Defrag 1.20
Pros: I've used this program with XP,Vista and now windows 7 and it works flawlessly.I have even installed it on my wife and daughters computer and recomend it to anyone over the windows defragmenter.Thanks and keep up the good work.
Cons: None.It works great.
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1 out of 1 people found this review helpful
Version: Smart Defrag 1.20
Pros: Quite fast in defragmenting files
Cons: While defragmentation of files is quite fast, files are not compacted to bring them in close proximity
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Version: Smart Defrag 1.20
Pros: Very light in memory requirements. Does an adequate job.
Cons: The screen could be bigger and more informative when the processing is going on.
- See all 320 user reviews Write review
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