PyroCMS is an open source, object oriented content management system built using PHP5 and CodeIgniter. PyroCMS is easy to use, looks great and uses some smart caching to keep everything running smoothly. It can be easily extended with Modules, Widgets, and Plugins which are easy to make; and it can be customized with Themes, which are basic HTML with a few tags in place. PyroCMS is licensed under the Apache license.
If you would like to see Pyro in action you can view a demo install at Pyro
It's free with all business web hosting accounts as well get a free domain name.
It runs on your own domain website that is hosted with us.