This document discusses several open source content management systems (CMS), including their missions, technologies used, licenses, and communities. It compares CMS solutions like Drupal, Joomla, Plone, TYPO3, and WordPress, looking at their stated missions and visions. It also notes that over 1,000 CMS solutions exist to solve similar problems in different ways. The document suggests reading about the CMS options or using common sense to select the best solution for a given purpose.