Ultra Defragmenter for Windows

By UltraDefrag
Free
User Rating

Key Details of Ultra Defragmenter

Perform defragmentation of your hard drive to free up space.
Last updated on April 6, 2020
There have been 4 updates
Also available on
Virus scan status:
Clean (it's extremely likely that this software program is clean)

Editors' Review

Download.com staffApril 6, 2020

For whatever reason--maybe just nostalgia--people are hooked on the old Windows defragmenter cluster map, with the little colored squares rearranging themselves into their unfragmented positions. Ultra Defragmenter brings this interface back, and although it definitely kicks it old school as far as the visuals are concerned, we're not sure it works much better than the built-in Windows defragmenter.

The program's interface is plain, displaying the list of volumes, the cluster map, a progress bar, and a handful of buttons. We had the program analyze our hard drive and then started defragmenting. The program seemed to take about as long as the built-in Windows defragmenter, if not a little longer; it wasn't terribly slow, but it didn't impress us with its speed, either. Once it was finished we opened the Windows defragmenter and analyzed our hard drive with that. Even though we'd just defragged with Ultra Defragmenter, the built-in utility showed that our drive was still 20 percent fragmented. We ran Ultra Defragmenter again, analyzed the drive, and found that the fragmentation was down to 19 percent. So although Ultra Defragmenter looks cool, it doesn't seem too terribly effective. The program does get points for having a thorough online Help file that explains all the ins and outs of both Ultra Defragmenter and the defrag process in general. Overall, Ultra Defragmenter isn't a terrible choice--especially if you really miss the cluster map--but it's probably not the best option if you want a really thorough defragmentation.

Ultra Defragmenter installs politely but leaves a folder behind upon removal. We recommend this program to everyone, provided that you don't mind form trumping function.

Ultra Defragmenter for Windows

By UltraDefrag
Free
User Rating

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Full Specifications

GENERAL

Release: July 26, 2011

Latest update: April 6, 2020

Version: 5.0.0-beta-3

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 2000
Windows Vista
Windows 10
Windows XP

Additional Requirements: None

POPULARITY

Total Downloads: 37,686

Downloads Last Week: 0

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User Reviews

2.8/5

13 User Votes

Optimizer function extremely slow
vivcorFebruary 17, 2011
Pros
Defrag is fast
Cons
I am running the optimizer on my 500 GB hard drive on a Vista 64 system. It has been running for over five days and is only 64% done.
Summary
Okay for defrag but stay away from the optimizer
Too slow to use, just like the windows defragmenter
Fred2794January 27, 2011
Pros
Looks good but then looks are not everything.
Cons
I found the Ultra Defragmenter too slow, so I uninstalled it
Summary
I might be ok to use if you have plenty of time, but I preferred the old one, so I have gone back to it.
Excellent product for XP users
HiRam_LoRamDecember 24, 2010
Pros
Much better for defragmenting than XP's built-in defrag program
Cons
Not entirely safe - can cause errors if interrupted in the middle of a process
Summary
This program is a big improvement for XP users, since XP's defrag program is poor quality. Does a much deeper and more thorough defrag than XP. The "Optimize" function provides a noticeable improvement in performance. However, the "Optimize" function is VERY slow - on some of my machines it took 36 HOURS to run! If it's interrupted at any time during these 36 hours it can cause disk errors that are hard to repair. This program is not needed for Windows 7, which has a good built-in defragger. Overall, it's a good program, but be careful with it.
useless crap.
trihvostOctober 27, 2010
Pros
nothing indeed.
Cons
it has a lack of settings. it creates unnecessary files on every volume of a disk. it is just the built-in Windows defragmenter extension.
Summary
Defrag works well, don't ask me how but it does!
joejet45October 3, 2010
Pros
nO WORK REQUIRED, NO THINKING REQUIRED.
Cons
It should be renamed "Joe Jet Defrag Works"
Summary
Get it, Use it and run it and let it tun off your computer and go have a banana split!!
A good defragmenter.
DrMuraliRajAugust 22, 2010
Pros
Light and easy to use.
Cons
A trifle too slow.
Summary
Easy to install and use,strikingly low memory usage.
Does a great job
filbertrockoJuly 22, 2010
Pros
Thoroughly defrags, esp in vista were you can't see what you are doing, like in XP
Cons
takes a long time
Summary
A neat,fast,awesomely lean application.
DrMuraliRajApril 21, 2010
Pros
Ease of installation and use,faster than a lot of other defragmenters-optimization is slow,though,and that cannot be helped,I suppose.No problems with it all.
Cons
None at all.
Summary
A good,lean and fast optimizer-do try this out:better than most others,and free too!
Rather use operating system standard defrag
norjonAugust 17, 2009
Pros
Interface is fairly attractive.
Cons
Just quit working twice in one session. Interface is not very intuitive.
Summary
works great moves system files in dos mode easy to use
stewartjeJanuary 18, 2009
Pros
useful to compact disk and move system file defragment , very nice.
Cons
I could not find anything wrong with this software.
Summary
It is free.

Developer's Description

Perform defragmentation of your hard drive to free up space.

UltraDefrag is a powerful open source defragmentation tool. Its engine is very fast, because it is created as kernel-mode driver. They are three interfaces to them: graphical, console and native. First is very useful, because it use cluster map visualization. Console is good for task scheduler, and native tool - for advanced users and programmers.