Softaculous is probably the best 3rd party auto installer add-on which can be purchased and added to cPanel. Softaculous offers more than 230 applications/scripts and it allows you to install them really fast. Currently, it can install a large number of applications and scripts ranging from bulletin boards to content management systems and even Java Script libraries. Softaculous comes FREE with each SiteGround account. For more information on that matter, please check our Softacuilous hosting page.
Softaculous is a commercial script library that automates the installation of web applications to a website. Softaculous scripts are executed from the administration area of a website control panel such as cPanel, Plesk, H-Sphere, DirectAdmin and InterWorx.