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

Home Page - http://piriform.com/