DotNetNuke is an open source solution for enterprise Web content management.
Joomla is a content management systems (CMS) that allows you to build websites and online applications.
Prestashop is a free e-commerce solution and open source.
WordPress is an open source free CMS to post blogs and websites.
Short presentation: Drupal is a content management systems which providing system management and organization for any website. Its advanced translation system is one of its major assets.