This document provides a comparative overview of various content management systems (CMS) including WordPress, Joomla, Drupal, DotNetNuke, Umbraco, vBulletin, and ExpressionEngine, detailing their origins, licensing, popularity, server-side scripting, features, and concerns. Each CMS is described with its benefits, usability for beginners or developers, and specific examples of usage. The document also includes links to official sites for further resources and support.