UltraDefrag is a maintenance tool especially designed for the defragmenting and compacting of data stored in your storage unit.
It's main base is speed. Once it has analyzed the data of the fragmented files, the defragmentation process is extremely easy.
Furthermore, you can see the amount of files that have been defragmented, even when they're being defragmented, visualizing at all time the defragmenting progress by files, which makes the program even more trustworthy.
All this makes UltraDefrag a very interesting utility that is worth trying.