UltraDefrag

UltraDefrag is a free Windows disk defragment utility which utilizes the same API which is used by virtually all other disk defragmenters which is provided by the Microsoft Windows operating system.

Though it defragments disks the same way Windows does, it includes several new and improved features which makes defragmentation more complete and puts more control into the hands of system administrators and users alike.

The graphical user interface doesn't take much time to get used to as it contains several standard features which most other defragmenters use.

When you run the program and choose to defragment a hard drive, you'll be given a couple of different options after hard drive analysis has completed. It will display a report (available in the form of an HTML file) which displays which files are fragmented and their locations. If you want to complete your hard disk defragmentation process quicker, you can also choose to skip specific files.

This program includes support for 64-bit operating system natively, so if you are running an x64 version of Windows, simply download the x64 installation file and you're good to go.

From Dmitri Arkhangelski:

UltraDefrag download is an open source disk defragmenter for Windows NT 4.0 and later operating systems. It makes use of the same defragmenting API used by many other windows defrag utilities, both open and closed source.

However, UltraDefrag has many features that makes it unique. Firstly it has a kernel mode driver that does most of the work, secondly is the ability to run the application at boot up time in a manner similar to chkdsk.

UltraDefrag 5.1.1 is licensed as Freeware for the Windows operating system / platform without restrictions. UltraDefrag is available to all software users as a free download (Freeware).

UltraDefrag Virus and Malware Tests:

For security reasons, you should also check out the UltraDefrag virus and malware test that has been uploaded; additional UltraDefrag screenshots may be available, too.