RegClean Pro is a registry cleaning utility developed by Systweak.com. This application is one of those that users want to have on their PCs to make their systems faster. However many security experts relegate RegClean Pro to Potentially Unwanted Applications. The reasons for it are explained by the method the program uses to get inside a system and the application functioning as well. Regclean Pro is rarely installed by user’s intention, more often the program looks for sneaky ways to be installed.