UltraDefrag Software for Windows [Download]

UltraDefrag is a disk defragmenter for Windows, which supports defragmentation of locked system files by running during the boot process. It is easy to use without any complicated scripting or a huge load of configuration settings. You can filter the files processed by size, number of fragments, file name and path. You can terminate the process early by specifying an execution time limit.

Features
Boot Time Defragmentation for system files processing
Console interface for batch processing or setting up scheduled tasks
Graphical user interface to follow the process visually
Process single files, folders or drives from the Explorer's context menu
Specialized processing algorithms for each situation
Available for both 32bit and 64bit Windows
Optional dry run to get a preview of the resulting disk usage

Legal Notice:
I am in compliance with eCrater and an authorized seller of this software under the GNU/GPL license, which allows for reselling.