Webuzo PyroCMS Stack is pre-bundled with all the dependencies and requirements like Apache, MySQL, PHP, etc. 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.