UltraDefrag is a powerful disk defragmentation tool for Windows NT/Vista/XP/Server2003. Extremely fast and useful. Some of the unique features of UD are ability to defragment system files at boot time and defragmenting single file or directory.

Changelog:
- volume optimization algorithm was highly improved
- fragments threshold filter parameter was added
- UD_TIME_LIMIT option was added
- portable version was highly improved
- few little bugs were fixed
- now the program is much more compatible with Vista and later versions of Windows; this is achieved by adding the User Mode Driver to it
- program's reliability increased by removing error handlers caused infinite loops
- now the program can be used in Windows Safe Mode when the user mode driver is enabled
- since this version native 64-bit binaries aren't available due to the C compilers internal bugs (Windows DDK, Windows SDK, Pelles C, MinGW x64 were tested); portable UltraDefrag can be used now on all of the 64-bit systems instead of the native 64-bit packages
- NOTE FOR PROGRAMMERS: to successfully compile the user mode driver run configure.lua script, check 'Apply patch to MinGW' box and click OK once again

Program Information Category: Tools and Utilities Type: Free Version: 3.3.0 Size: 2.6MB Works on: Windows Product page: here