UltraDefrag is a powerful Open Source Defragmentation tool for Windows Platform. It can defragment any system files including registry hives and paging file. Also one of the main goals of UltraDefrag is doing the job as fast as possible.

Changelog:
- UltraDefrag Scheduler has been retired as a component less functional than standard Windows Task Scheduler; visit http://ultradefrag.wikispaces.com/ for tutorials on scheduling disk defragmentation tasks through Windows Task Scheduler
- --wait option was added to the command line interface to make scheduled defragmentation more flexible
- --use-entire-window option was added to the command line interface
- more reliable monolithic boot time defragmenter was made
- few bugs preventing the correct MFT displaying were fixed in driver
- fixed a bug preventing OS version check to work on later Windows versions
- one little bug preventing displaying system files in green color on NTFS volumes was fixed
- cluster map appearance in GUI was improved and made absolutely independent from the screen DPI
- cluster map block size was made customizable in GUI through map_block_size and grid_line_width parameters added to guiopts.lua configuration file
- progress indication was improved in the boot time interface
- backspace and escape keys handling added to the boot time interactive mode
- one little bug preventing the root directory from being defragmented fixed
- the following translations were updated:

Czech, Finnish, Japanese, Spanish (AR), Portuguese (BR), Korean, Hungarian

- update check was added to the GUI
- installer was updated to include publisher, version, estimated size, custom icon and support link in uninstall information
- few wrong prototypes in /src/dll/zenwinx/ntndk.h file were fixed
- sources were cleaned up by removing the obsolete kernel mode driver support at all
- for programmers: winx_create_thread improved, winx_getche and winx_gets improved, winx_prompt added, udefrag.dll interface optimized (function prototypes changed!)

Program Information Category: Tools and Utilities Type: Free Version: 4.3 RC3 Size: 363KB Works on: Windows Product page: here