CCleaner Professional License Key is a convenient application developed by Piriform Software Ltd. It allows users to optimize and clean up their systems. This program is a popular and widely used version to clean your PC and MacBook 100% and make it secure. It is also designed in such a way that users of any level can use the application. With just a few clicks, CCleaner Professional Key can clean and debug the system. Users can uninstall applications, clean up the registry, clean up history, cache, Internet files, etc with CCleaner License Key.