Unchecky is an optimization software to block additional software installations. Indeed, during the installation of some bundled software, proposals are made to install other utilities that have nothing to do with what you want to install.
Some download sites abusing the packaging method to get you to install additional software, as toolbars or worse, potentially unwanted software. In practice, Unchecky automatically detects additional software in the installation programs and uncheck the boxes that are checked by default.
Editor : RaMMicHaeL