This utility offers a one-stop-shop for cleaning and maintaining your computer for better overall system performance. The interface is very simple, featuring only a few buttons, which makes it easy to get down to cleaning immediately (in fact, it automatically runs on start-up) and doesn't confuse you with multiple steps.The Maintain Windows section focuses on four areas of maintenance: spyware removal, Registry cleaning, a privacy sweep, and deletion of junk files.The Diagnose System button provides system optimization tools, detects spyware, defragments your disk, and scans for hijacked Windows settings. In our tests the scan and clean for each of these areas took less than 10 minutes to complete. In many of these scans, it is difficult to tell what exactly is being accomplished by some of the tools, but we were able to test against other trusted apps, which confirmed Advanced SystemCare's efficacy in those areas.

CCleaner is a freeware system optimization, privacy and cleaning tool. It removes unused files from your system - allowing Windows to run faster and freeing up valuable hard disk space. It also cleans traces of your online activities such as your Internet history. Additionally it contains a fully featured registry cleaner.

EasyCleaner is a small program which searches the Windows registry for entries that are pointing nowhere. EasyCleaner  also lets you delete all kinds of unnecessary files such as temps and backups. You can search for duplicate files and you can view some interesting info about your disk space usage! You are also able to manage startup programs, invalid shortcuts and add/remove software list.