DotNetNuke (website) is an Open Source Web Application Framework. The application's content management system is extensible and customizable through the use of skins and modules, and it can be used to create, deploy, and manage intranet, extranet, and high traffic web sites. View some Examples.
“Skinning” allows you to separate logic/content from its visual presentation. By applying a “skin,” you can completely change the look of your website without the need to reorganize content – all at the click of a button. Skins by Adammer™
Versatile – DotNetNuke is an open source web application framework ideal for creating, deploying and managing interactive web, intranet, and extranet sites.
User-Friendly – DotNetNuke is designed to make it easy for users to manage all aspects of their portals. Site wizards, built-in help, and a well-researched user interface allow universal ease-of-operation.
Extensible – DotNetNuke is able to create the most complex content management systems entirely with its built-in features, yet also allows you to work effectively with add-ons, third party assemblies, and custom tools. DNN modules and skins are easy to find, purchase, or build. Site customization and functionality are limitless.
Powerful – DotNetNuke can support multiple portals or sites from one install. DotNetNuke allows administrators to manage any number of sites – each with their own look and identity – all from one hosting account.
Feature-Rich – DotNetNuke comes loaded with a set of built-in tools that provide powerful pieces of functionality. Site hosting, design, content, security, and membership options are easily managed and customized through these tools.
Supported - DotNetNuke is supported by its Core Team of developers and a dedicated international community. Through user groups, online forums, resource portals, and a network of companies like Adammer who specialize in DNN, support is always close at hand.
Localized – DotNetNuke includes a multi-language localization feature which allows you to easily translate your portals into any language. With an international group of hosts and developers working with DotNetNuke, familiar support is always close at hand.
Open Source – DotNetNuke is provided free, as open-source software, and licensed under a standard BSD agreement. This allows individuals to do whatever they wish with the application framework, both commercially and non-commercially, with the simple requirement of giving credit back to the DotNetNuke project community.
Check out the Adammer DNN Tips.