A simple and super fast defragmenter


Our rating: 

License: Free (Open source)
Review & Alternatives: Best Free Disk De-fragmenter

Pros & Cons:

System files defragmentation. Incredibly fast in all tasks. Power (scripting) features.
Some settings only accessible by configuration file (txt).

Our Review:

UltraDefrag is simple yet has a lot of customizable options through text files and scripts via two mouse-clicks. Not only is the defragmentation super fast, but also you are not going to notice it's working!

You can keep doing your things while UltraDefrag does what was born to do… defrag. It performs so well you are going to want to carry it in your wallet.

A lot of varied boot defrag commands. If your goal is to optimize your system startup at maximum, this is what you need.

UltraDefrag was reviewed by on



2017-02-26 VirusTotal scan of Ultradefrag 7.0.2 shows: Endgame malicious (moderate confidence) 20170222

This is a false positive generated by the x32 bit version only. None of the top antivirus solutions find anything wrong with it. The x64 bit version is 100% clear. If you need x32 bit for a legacy system, use the portable version. MC - Site Manager.

Thank you MidnightCowboy!! Both my Windows Defender and Malwarebytes Anti-Malware scanned Ultradefrag with no problems. Thank you for letting me know that the VirusTotal scan was a false positive. I re-installed Ultradefrag. Thank you for the quick response! By the way, the Ultradefrag x64 version also received the same false positive.

Is ultradefrag still the editor's choice when on their website it looks like the project has been abandoned?

yeah it look abandoned, maybe an update would be nice :)

No longer works with 64bit windows. New 64bit version is not free.