Dot Net Nuke (DNN)

DotNetNuke is an open source platform for building web sites based on Microsoft .NET technology. It is written in VB.NET and distributed under both a Community Edition BSD-style license [3] and a Professional Edition proprietary license. DotNetNuke’s content management system is extensible and customizable through the use of skins, modules, data providers, language packs and templates.

DotNetNuke’s content management system allows non-technical users to create and edit content, and add custom features and personalize the site look and feel. It can be further expanded with addition of third party modules and tailored with custom graphics and layouts in the form of skins.  The DotNetNuke Corporation provides an open source version of DotNetNuke called the Community Edition. It includes access to the source code of the framework and basic modules, and an MIT license allowing flexible modification and distribution rights. The Community Edition a popular web content management (WCM) system and application development framework for ASP.NET, with over 6,000,000 downloads and 400,000 production web sites.