CCleaner is probably the most popular free cleaning utility in the world with over 1 billion downloads since its launch in 2003. Piriform's CCleaner is a fast and easy-to-use utility that makes your computer faster, safer and more reliable. CCleaner removes cookies, temporary files, and other unused data that clogs your operating system.
This frees up space on your hard drive, allowing your system to run faster. Deleting this data further protects your anonymity, which means you can surf online more securely. The built-in registry cleaner repairs errors and incorrect settings to make your computer more stable. The simple and intuitive user interface as well as the quick and powerful cleaning make CCleaner a favorite among both novices and experts. There are also Professional , Network , Business and Technician versions of CCleaner if you want to use it more thoroughly.