This document compares the popular open source content management systems Joomla, Drupal, and WordPress. It discusses their histories, download numbers, extensions available, and high profile sites using each platform. Popularity trends from Google and Alexa are presented. Joomla, Drupal, and WordPress were compared based on development time, validation, page weight, and custom code required. While each CMS has its strengths, the document concludes there is no single best choice and it depends on individual tastes and needs.