3.5 stars

Editor's Rating


User Rating

6 6


Open Source defragmentation tool UltraDefrag is an Open Source disk defrag and optimization tool that is designed for fast defragmenting, using a kernel based driver. It offers a simple GUI with a cluster map display, as well as a command-line interface and scheduling option. The program supports full defrag, quick defrag and space defragmentation (compacting), and you can set filters to include/exclude files or folders based on their name or size (requires editing of config file). Other features include HTML reports and boot time defragmentation (with script support), MFT optimization and a command-line interface. Copyright Snapfiles.com

Win (All)  portable Portable

Product Details

Publisher Dmitri Arkhangelski Price Free
Version 6.1.0  history Last updated Apr 20, 2015
File Size 743 Kb Requirements None

User Reviews

5 stars40% 2
4 stars20% 1
3 stars20% 1
2 stars20% 1
1 star0% 0
Based on 5 reviews

Latest user reviews:

The only one to trust 4 stars by Klatuu Jan 10, 2012 (Read all my 16 reviews)
After testing several defrag programs on 64-bit systems, this is the only one that seems to work. Others can destroy restore points. It's very fast, and very safe - and while the interface isn't anything to write home about, it is fine once you figure it all out. This is the only defrag program I'd recommend - period. show Review details
Adequate 3 stars by Harlan May 30, 2010 (Read all my 49 reviews)
There are lots of defraggers available, including the one that comes with Windows. This one works adequately in every way. It is small and appears to work properly, although not too thoroughly. It can defrag at bootup, a minor advantage over some of the others. Considering the basic functionality, though, the interface is poorly implemented (for example, incomplete color legend, incomplete help files, options changed by editing .lua text files, choice of lengthy report files or none at all), and the speed is nothing special. Optimization is slow and hard to cancel out of. MyDefrag is a widely-used alternative (don't waste your time trying to learn and use its overkill scripting language), although it is confusing enough that several people have written GUIs for it. Anyway, unless your disk is almost full and you have massive fragmentation, defragging will provide little, if any, perceptible improvement in system speed. show Review details
The best 5 stars by jlhns40 May 22, 2008 (Read all my 10 reviews)
This defrag beats them all. It analyzes, defrags and compacts. Fast. Thorough. It has filters to exclude desired folders. System Volume Information, temp, and recycler are defaulted filters. I added Sandboxie to the filters. When I check the report it lists these files with a black background with white print. Previous reviewer wondered why it didn't defrag all the files listed. Possibly the filtered strings are the answer. This is an excellent program. show Review details
Read all 5 user reviews...

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