Umbraco provides a full-featured web content management system that is easy to use, simple to customize, and robust enough to run the largest sites such as wired.co.uk and asp.net.
Umbraco is in use on more than 85.000 web sites in nearly every language covering a myriad of industries. Some of the world's largest companies (Microsoft, Toyota) use Umbraco and some of the world's most innovative companies use it as well. Businesses large and small choose Umbraco because it lets them build sites their way, develop custom features quickly, and perform ongoing site maintenance and updates with a simple and robust approach.
Umbraco is a free, open-source web cms built on the Microsoft .NET Framework. It is easy to use, simple to understand, and is highly extensible using industry-standard languages and patterns such as HTML, CSS, jQuery, and C#. Umbraco is powerful and flexible whether you're a cutting-edge designer or a hard-core code junkie.