Akumina is a content management system which sits on top of SharePoint. It has a good user interface which is mobile friendly.
Akumina provides you with an interface after installation. But not many people know that you could make changes to the layout of the page. In order to do that on would have to expand the ribbon on the top and activate the page tab. In here you could select the layout you want, it is based on the number of columns one would like to have on the page.