CC Cleaner
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CCleaner is a freeware system optimization and privacy 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. But the best part is that it's fast (normally taking less than a second to run) and contains NO Spyware or Adware! :)

UnivWinClean
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WinCleaner OneClick CleanUp - Clean your system to free up hard drive space, maximize stability, and boost performance