RJ Circular Module displays a button at the bottom of the screen. Click on the button opens up a semi-circle with 5 sectors featuring icons of your choice (icons from FontAwesome 4.5.0). You can assign links to the icons leading to whatever you wish - social networks or just other pages of your site. It also can serve as additional navigation.
Colors of odd and even sectors, color on hover, button color - everything can be customized.
All you have to do is choose icons, insert links and customize colors.