Best defrag software downloads

------------------------------------------------------------------------------------------------

MyDefrag

Download MyDefrag


Price: FREE
Publisher: JC Kessels
Web: www.mydefrag.com

MyDefrag's predecessor, JKDefrag, was a command-line based defragger, which was very light on system resources. MyDefrag is based on the same program, but it's switched to closed rather than open source.

It even has a special mode for SSDs, if you insist on defragging your solid-states - not that we'd recommend doing this.

MyDefrag

One of JKDefrag's best features was its ability to run as a screensaver. You could actualyl see it doing its business, bit-by-bit, which makes for fascinatingly ugly viewing. In fact, it prompted my ex to say "I THINK YOUR COMPUTER'S BROKEN".

But it is immensely satisfying to see everything fit into place properly. At 54 minutes long, MyDefrag was also the fastest in our roundup, and it certainly defragged our hard drive properly.

It's not particularly the most aesthetically pleasing of defragmentation software, but it does the job perfectly, and has a whole host of extra settings. Highly recommended.

Score: 90%

grey line

------------------------------------------------------------------------------------------------

Defrag Professional

Download Defrag Professional


Price: £30
Publisher: O&O Software
Web: oo-software.com

O&O's defragger doesn't just defrag your disks, it does it PROFESSIONALLY. It wears a suit and tie, and probably some nice, polished shoes. It also seems to have taken a leaf out of MyDefrag's book by letting you run it as a screensaver.

It's a fully-featured package, with a ton of settings, such as eight defragmentation methods. It even sits in the background and monitors your fragmentation levels. It's certainly the most gorgeous and easy-to-use of defraggers, but at over an hour it didn't score too well in our tests.

Defrag pro

If we could rate software on looks alone, this would be a winner. But we can't, and it's not. Plus, you're paying £30 for something that - at its core - is not actually as good as free software.

Score: 65%

grey line

------------------------------------------------------------------------------------------------

PerfectDisk 10

Download PerfectDisk 10


Price: £18
Publisher: Raxco Software
Web: www.perfectdisk.com

Do you enjoy drinking the rank Australian lager that is Foster's? If you do, you can thank PerfectDisk for the unfragmented flavour of your weak tin of koala urine. You see, PerfectDisk is endorsed by Foster's. Is it endorsed by Format? Kind of.

PerfectDisk 10 is also the first defragger to be approved by Microsoft for Windows 7, although we can't say we noticed any compatibility issues with other software and the latest OS.

PerfectDisk

It's sleek and user-friendly, if a little derivative of Defrag Professional. Like Piriform's Defraggler, it lets you specify folders and files to defrag. It's also got something called 'SMARTPlacement', a proprietary technology which organises the bits on your disk according to usage.

In our tests, it came in at just a minute behind Defrag Professional. But overall, PerfectDisk is a more complete package, and cheaper to boot. If you insist on paying for something you can get for free, it's just about right.

Score: 80%

Latest in Software & Services
TinEye website
I like this reverse image search service the most
A person in a wheelchair working at a computer.
Here’s a free way to find long lost relatives and friends
A white woman with long brown hair in a ponytail looks down at her computer in a distressed manner. She is holding her forehead with one hand and a credit card with the other
This people search finder covers all the bases, but it's not perfect
That's Them home page
Is That's Them worth it? My honest review
woman listening to computer
AWS vs Azure: choosing the right platform to maximize your company's investment
A person at a desktop computer working on spreadsheet tables.
Trello vs Jira: which project management solution is best for you?
Latest in Best
Some of the best mobile controllers on a colorful background.
The best mobile controllers 2025: upgrade your portable play
Best controllers for Monster Hunter Wilds featuring Razer Wolverine V3 Pro
The best controllers for Monster Hunter Wilds: the gamepads most suited for the game’s tricky control scheme
Best password manager for families
Best password manager for families of 2025
A woman taking a selfie on a camel in Morocco.
Best eSIMs for Morocco for 2025
DJI Mic 2 with windshield
The best wireless mic for 2025: top wearable microphones for content creators
Lead image for TechRadar's guide to the best Fujifilm cameras, featuring the X-T5
Best Fujifilm camera 2025: top mirrorless and compact cameras, retro and otherwise