KCleaner Portable is designed to be the most efficient hard disk cleaner, tracking every useless byte in order to give you all the resources you may need for your documents, music, pictures, and movies. It is the first product of this kind featuring a full automatic mode, which works in background so that you don't have to care about when to launch it. If data security is something you are interested in, you may like the secured file deletion methods proposed by KCleaner, making deleted files unrecoverable by any known mean.