CCleaner 5.11.5408 recently released, is the number-one free cleaner tool for cleaning your PC. It protects your privacy and makes your computer faster and more secure! Is your computer running slow? As it gets older it collects unused files and settings which take up hard drive space making it slower and slower. CCleaner cleans up these files and makes it faster instantly. Many programs run silently in the background when you start up your computer.