It's called disk defragmenter. Windows has an in built disk defragmenter which I haven't found to be that good. Lot of times you would find that it starts from 0%. Primarily it is due to other programs running and accessing the disk.
So a better tool that I've used and I'm quite satisfied is Piriforms Defraggler (http://www.piriform.com/defraggler) Try it out once and I'm sure you'd also like it.
disk defragmenter
The defragmenter.
That would be the defragger.
defragger
Uninstall undesired or unused programs (control panel>Install/uninstall programs).Defragment your hard drive. (Start menu>all programs> accessories>System Tools>Disk Defragmentor>Defragment Disk).Change a good system protection software (not take too much system resources)
ccleaner
delete some unused programs.
minimise unused CPU time reduce incidence of peripheral-bound operations minimise total elapsed time prevent single programs from dominating the CPU
Unused icons are programs on your desktop that you have not opened for a while. Windows notifies you that you haven't used them in a while and will want to create a folder and put them all in for you to clear clutter.
perform specific tasks related to managing computer resources.for example,the windows utility called Disk Defragmenter locates and eliminates unnecessary file fragments and rearranges files and unused disk space to optimize computer operations.
In Java it is called by the same name "Garbage Collector" The purpose of the garbage collector to free up unused heap space so that it can be utilized by the other programs. All unused objects are cleared using the GC to create space for other applications/programs.
PC organization is keeps your computer organized. This includes, but is not limited to:1. trashing old files2. cleaning the drivea: removing unused foldersb: freeing space3. tidying up the hard drive and desktop by removing unused items4. remove programs that are unused
smash the thing to pieces
Because it's soaking in to dry unused surfaces.