Belgian developer Dries Buytaert is on the verge of putting open source CMS (content management system) Drupal officially into business. Annoucing $7 million in first round founding from North Bridge Venture Partners, Sigma Partners, and O’Reilly AlphaTech Ventures, Buytaert and Jay Batson, former CEO and founder of Pingtel, hope to steer their Drupal spun startup Acquia deeper into the enterprise. Drupal already counts SonyBMG, Warner Brothers Records, Forbes, and The Onion as proponents. The investment in Acquia will fuel a foray into value-added software and services for Drupal, which was recently part of a comprehensive InfoWorld Test Center comparison of five open source CMSes. In the roundup, Drupal 5.2 squared off against DotNetNuke 4.4.5, Plone 3.0, Open Source Matters Joomla 1.0.13, and 2007 InfoWorld Bossie winner Alfresco Community Edition 2.1.Additional resourcesOpen source CMSes prove well worth the price We look at five free offerings boasting solid Web publishing features that challenge their commercial competitors2007 InfoWorld Bossie AwardsInfoWorld editors and reviewers award the Best Open Source Software for the enterprise Technology Industry