UltraDefrag is a powerful Open Source Defragmentation tool for Windows Platform. It is very fast, because the defragmenting is done via the kernel-mode driver. There are three interface available : Graphical, Console and Native.

Changelog:

 - Ultra Fast NTFS scanning feature was added, NTFS analysis becomes
approximately 25 times faster now
- defragmentaion of additional streams attached to NTFS files was added
- information about trash (temporary files) excluded from reports,
statistics and cluster map; these files are completely ignored now
- a lot of new options were added to the console program
- the ?? sequence removed from file names in reports
- Thai translation was made
- some important parts of handbook were completely rewritten
- Scheduler was rewritten in C language; NET framework is not required now!
- ability to translate Scheduler into foreign languages was added
- GUI options were moved from udefrag-gui.cmd script to
easy to understand guiopts.lua file
- debugging information will not be saved on disk since this version of the
program; read carefully an appropriate chapter of program's handbook for
detailed instructions about kernel mode driver debugging instead
- few fatal driver bugs were fixed
- driver's reliability was increased
- now UltraDefrag requires less software for its development
- FOR PROGRAMMERS: build configurator was rewritten in Lua
- NOTE FOR PROGRAMMERS: to successfully recompile the driver run
configure.pl script and click 'Apply patch to MinGW' button once again

Program Information Category: Tools and Utilities Type: Free Version: 3.2.0 Size: 613KB Works on: Windows Product page: here