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. But the best part is that it's fast (normally taking less than a second to run) and contains NO Spyware or Adware! 
Cleans the following:
* Internet Explorer
* Firefox
* Google Chrome
* Opera
* Safari
* Windows - Recycle Bin, Recent Documents, Temporary files and Log files.
* Registry cleaner
* Third-party applications
* 100% Spyware FREE