Whether you have decreasing space because they've been taken by old, unused and huge size files on your harddisk, or you just want to make the best use of every byte of your space, PCBooster Free Disk Cleaner is a highlight to help regain them. It can find out all space hogging files, old update files, temporary files and other junk files generated when surfing internet in order to clean the drive off to leave some room for useful ones.