MAGENTO (ora mage-os.org). The best solution when it comes to E-Commerce and on-line stores. Unlimeted features, there'll be virtually no-limits in your E-Store settings.

CMF. Content Management Framework: taking flexibility to reality. Already used by many Government, Enterprises and Major organizations, Drupal's been gaining more and more popularity among webmasters and teams that need great flexibility as long as the advantages that modules like view take with them.