DMG Forums
DMG Forums is an open source ASP.NET forum/portal application for Microsoft SQL or MySQL. Completely customizable applications can be created with unlimited content pages or forum pages. Your entire site can be edited with feature-rich administration tools. Users can have customized profile pages and create blogs or private discussion boards that are separate from the main forums. Admins can control the entire layout and design of their site without having to edit the ASP pages directly. The layout manager allows templates to be created to switch from one design to another with the click of a button.