Umbraco is an open source asp.net CMS content management system that uses mssql to store data. Using Umbraco, designers can create valid XHTML markup templates and developers can create any .Net-based module. Key features include: Beautiful, friendly user interface (supports multiple languages) Integrated WYSIWYG editor (can create various types of controls) Supports editing in Microsoft Word Full source code available (open source) Super simple template engine Full support for the Web standard