System Cleaner does exactly what it sounds like. It cleans the system up of useless garbage files. Basically, there are a whole bunch of applications that create pretty useless things in Windows, such as Internet Explorer’s temporary files, the Recent documents, and a whole bunch more. While these files are necessary during the use of the application, afterwards they just take up space and gunk of the works. System Cleaner cleans up after those applications to make sure that your system can work smoothly for at least a little longer than usual.