The best one I use one of the cpanel services apps is softaculous not sure if anyone agree's with me . softaculous is a app with many free scripts which allows you to install on your domain and server.
It as many things for you to try like your own social network or forum, which I use the MyBB which is one of the top forum creators in my opinion. It also as many other scripts like wordpress , SMF forums and a lot more like SEO . This is a must check out for more information this is brilliant.