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

Changelog:
1. Defragmentation algorithm was completely rewritten to be more effective.
2. Free space optimization algorithm was completely rewritten to be more effective.
3. A lot of important bugs were fixed
4. Console and native programs are much faster now. Set program's filter to exclude unwanted files and folders from the analysis.

Program Information Category: Tools and Utilities Type: Free Version: 3.0 Size: 335KB Works on: Windows Product page: here