Deletes temporary files and leftovers from Windows and third-party apps.

Keeps your hardware running smoothly by updating old drivers.

While the free version available on CNET is robust, Piriform also offers a Professional edition. Here is how they compare: CCleaner Free Clears history and cookies. Standard Cleaning: Removes junk files to free up space. Health Check: Scans your PC and recommends quick fixes. CCleaner Professional