AxCMS.net is a free Enterprise Web Content Management System (CMS) which offers a comprehensive list of features for creating and managing web applications in Internet, Extranet and Intranet. It is based entirely on Microsoft .NET Framework 3.5, Silverlight 3 and ASP.NET Ajax.
Lates version AxCMS.net 9 RTW is now available for download:
http://www.axcms.net
Enjoy :-)