KC Softwares KCleaner Pro

This is designed to be the most efficient Hard Disk cleaner, tracking every useless byte to give you all the resources you may need for your documents, music, pictures, and movies. You might have experienced your computer becoming slow and sluggish over time due to cluttered files and unnecessary data. It is the first product of this kind featuring a fully automatic mode, which works in the background, so you don't have to worry about when to launch it.