umbraco codeplex

Watch a five minute introduction video
http://umbraco.org/help-and-support/video-tutorials/getting-started/what-is-umbraco
Umbraco - the simple, flexible and friendly ASP.NET CMS
More than 85.000 sites trust Umbraco
For the first time on the Microsoft platform a free user and developer friendly cms that makes it quick and easy to create websites - or a breeze to build complex web applications. umbraco got award-winning integration capabilities and supports your ASP.NET User and Custom Controls out of the box. It's a developers dream and your users will love it too. Used by more than 85.000 active websites including http://daviscup.com, http://heinz.com, http://peugeot.com, http://www.hersheys.com/ and The Official ASP.NET website from Microsoft http://asp.net you can be sure that the technology is proven, stable and scales.
More info at http://umbraco.org
Forums
We have a forum running on http://our.umbraco.org. The discussions area on CodePlex will be for discussions on developing the core, and not on Umbraco-implementations or extensions in general. For those topics, please use http://our.umbraco.org.