MapIgniter is a GeoCMS based on MapServer, PostGIS, OpenLayers and CodeIgniter.
The content management is done in a graphical interface, like any other CMS (Content Management System), creating a new concept: GeoCMS.
Look at install notes in the wiki: https://github.com/taviroquai/MapIgniter/wiki
More information on this wiki http://mapigniter.com/wiki/en:start