Joomla Multi Sites allows multiple domain names or sites to have their own joomla configuration file using the same joomla installation. Share the user (Single Sign-in), share extension, replicate into other DB, multisite install/uninstall facilities, ... <br /><br />Only 1 Space for all your websites ! <br /><br />Share the content of some extensions <br /><br /> * Share the users <br /> * Share = single data occurence. So, no need of syncrhonization <br /><br />Rapid website creation and replication <br /><br /> * Websites can be created with different domain, subdomain or subdirectories. <br /> * Websites can also be created from the front-end. <br /><br />License : <br /><br /> * Unliimted installation <br /> * Unlimited registration