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A Powerful Disk Defragmenter

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The term UltraDefrag is a shorthand for the Ultra Defragmenter and holds no connection with potential owners of registered trademarks or other rights. All trademarks, brands, and names are the property of their respective owners.

UltraDefrag is a powerful disk defragmenter for Windows. It can quickly boost performance of your computer and is easy to use. Also it can defragment your disks automatically so you won't need to take care about that yourself.


UltraDefrag 7.1 and 8.0 have been released [2018-09-28]

Dear customers! Finally the previously announced 7.1 version of the program is ready for download. It fixes a lot of bugs and features slightly improved disk processing algorithms. Also we're pleased to announce that we have relicensed UltraDefrag sources to Green Gate Systems, LLC. You are welcome to check out their enhanced 8.0 version of the program. It is much faster, so you will spend much less time for defragmentation. Also it can defragment your disks automatically when your computer is idle, so you won't need to take care about that yourself.




  • Automatic defragmentation.
  • Fast and efficient defragmentation algorithms.
  • Fully configurable disk optimization.
  • Easy to use portable edition.
  • More...



Desktop: Windows XP, Vista, 7, 8, 10

Server: Windows Server 2003, 2008, 2012, 2016

32-bit, 64-bit and Itanium editions