Defraggler

Windows

Defraggler differs from other defrag tools on the market, by enabling you to quickly and simply defrag the files you want to, without having to process the whole drive. Simply run it, select the file and defragment in seconds. No more struggling with the Windows defragmentation tool!

Defrag Individual Files
Defrag Free Space
Compact and Portable
Vista Support
Locate Files on the Drive
Freeware

And remember like all Piriform products, Defraggler is completely free for both corporate and individual use.