Powered by MySQL. Uses "classes" and "keys" accounting. It has something very new called "login consolidation". This allows you to use add-on modules from the free cgi, php, asp, etc web sites out there (like hotscripts.com). This means you aren't stuck with one type of forum or one chat room. There are a nearly infinite selection of add-on modules you could use. These login consolidation features help you eliminate multiple logins and registrations from these add-ons. Instead, your users will see only one registration and one login to access your website and all of your free add-ons.