UltraDefrag 5.0.1

UltraDefrag is a powerful disk defragmentation tool for Windows. It is the first open source defragmenter with full support of system locked files defragmentation. Actually all files including registry hives and paging file can be processed by UltraDefrag during the Windows boot process.

  • Boot Time Defragmentation: This feature provides an ability to defragment any system files. Including page file, registry hives, hiberfil.sys file and many other files locked by the system or other applications when windows is fully running.
  • Fast Disk Optimization: The optimizer rearranges all data and places them to the beginning of the drive. In many instances we have found, that the system is more stable and performs a lot better under load, if data is placed at the beginning of the drive.
  • Single File and Folder Defragmentation: After UltraDefrag is installed you have the ability to select any file or folder and deframent it. This option is mostly useful, if you have recently installed an application or a game and would like to have it defragmented immediately for maximum performance.


  • few important bugs in disk processing routines were fixed
  • few bugs in MFT optimizer were fixed
  • one bug causing boot time interface freeze after "Good bye..." message was fixed
  • the following translations were updated: Finnish, Indonesian, Italian
  • some additions to the tips, FAQ and GUI sections of the documentation

Download: UltraDefrag 5.0.1 | ~0.5 MB (Open Source)
Screenshots: >> Click Here <<
View: Product Details | UltraDefrag Website

Report a problem with article
Previous Story

SeaMonkey 2.7 Beta 3

Next Story

FileZilla 3.5.3


Commenting is disabled on this article.

The built-in defrag as well as the others mentioned in this thread are a reactive approach to fragmentation and provides a temporary solution to an on-going problem. Just because you defrag your PC, doesn't mean the problem has been solved. The minute you finish running your defrag, your PC will once again start accumulating increasingly more fragmentation with each and every use, so you feel like you are fighting a losing battle.

It also means that your PC is wasting resources by first writing fragmented files to your hard drive, and then requiring the defrag engine (built-in or other defrag only solution) to go to work locating and consolidating your files so that they that they are contiguous. This reactive, after-the-fact approach to fragmentation still leaves you vulnerable to an unreliable and slow performing PC.
The ideal solution is fragmentation prevention. Implemented as a proactive solution it provided a more complete solution that keeps your disk performing at optimum speeds at all times. Diskeeper is unique as it combines the best of both worlds by automatically handling any fragmentation that is already hurting your disk performance, and combining that with a fragmentation prevention technology that stops future fragmentation before it happens.

When your files are written to the disk contiguously (without fragmentation) rather than scattered across your disk, your PC doesn't have to work as hard to read or write your files. Plus as an added bonus, the reduction in disk activity actually extends the life of your hard drive by an additional 1-3 years - saving you money in replacement costs.
Send me a private message for further information.



To be honest, ever since I moved to Windows 7, I don't even bother myself w/ defragging... The automatic built-in one is good enough for me.

EDIT: There's a small Neowin site bug. When editing the comment, the single quotation mark becomes "& #039;" in the editbox (I've added a space so it'll show up in the comment). When submitting it back, it returns to be a single quotation mark. Seems like html escaping bug.

Avi said,
To be honest, ever since I moved to Windows 7, I don't even bother myself w/ defragging... The automatic built-in one is good enough for me.

I agree, having read the dev blog for 7 talking about defragging etc I decided to abandon third party tools too. And with an SSD defragging is pointless and harmful.