UltraDefrag is powerful Open Source defragmentation tool for Windows NT. It is very fast, because the defragmenting is done by kernel-mode driver.

They are three interfaces to them: graphical, console and native. The GUI is very useful, because it represents your filesystem visually as a color coded cluster map. The console is another option for those that prefer the command line. It is also allows you to run UltraDefrag from the task scheduler and scripts. Finally, the native executable will run at boot time in a manner similar to chkdsk.

The design of UltraDefrag is very simple. There are no skins and other unnecessary stuff. It is a small and powerful program!

Features:
· Very fast defragmentation, the work is done via a kernel mode driver which has an optimal defraging algorithm.
· Very small engine written in pure C.
· Nice graphical interface - compact and functional.
· Safety, because the file moving is accomplished with Microsoft's own Defrag API.
· Simple to use.
· Ability to generate html reports of fragmentation status.
· Ability to include/exclude files based on simple filters.

What's new:
· few bugs in driver were fixed
· a huge analysis speedup performed
· one bug in GUI (#2964309) was fixed
· one little bug preventing the Scheduler running on Windows 2000 was fixed
· volume status messages were improved in UltraDefrag GUI
· the report saving speedup was performed
· the following translations were added: Belarusian, Bulgarian, Croatian, Filipino (Tagalog), Finnish, Icelandic, Macedonian, Norwegian, Romanian, Serbian, Ukrainian, Yiddish
· the following translations were updated: Catalan, Chinese(Simplified), Chinese(Traditional), Czech, Danish, Dutch, Farsi, French(FR), German, Greek, Hungarian, Italian, Japanese, Korean, Latvian, Polish, Portuguese(BR), Portuguese, Russian, Slovak, Slovenian, Spanish(AR), Swedish, Thai, Turkish
· /LANG command line option was added to the installer

Download: UltraDefrag 4.1.0 32-Bit (287 KB) | 64-Bit [AMD platform] (331 KB) | 64-Bit [Itanium] (396 KB) | Screenshots | Homepage