Collaboration and social networking are driving the fortunes of a pair of up-and-coming open source platforms. In content management for the Web, Drupal is conquering new territory as companies look to build Web sites designed from the ground up to support social interaction. On the enterprise content management front, Alfresco has made collaboration and interoperability the keystones of its platform.
In other words, there's still an open world of community-supported Drupal for those that value cash over time and other resources. But for those that wouldn't mind a shortcut to Drupal-based productivity, there's Acquia Drupal.