CCleaner is a freeware

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
•