UltraDefrag is powerful Open Source defragmentation tool for Windows NT. It's engine is very fast, because it is created as kernel-mode driver. They are three interfaces to them: graphical, console and native. First is very useful, because it use cluster map visualization. Console is good for task scheduler, and native tool - for advanced users and programmers.

Changelog:
- fix 'stop' function and some other significant bugs

Program Information Category: Tools and Utilities Type: Free Version: 1.0.1 Size: 93.8KB Works on: Windows Product page: here