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 2.35.1223 has added session cleaning for Firefox and Google Chrome, support for Google Chrome Canary build, and added support for SRWare Iron browser via Google Chrome rule.