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.
What's new in this version:
Version 4.00.4064 has added cleaning for Avast Antivirus 8, Adobe Photoshop CS6, Samsung Kies, and Real Player 16 and improved internal architecture for better performance.