Slim ASP.NET based portal framework

Question

I am looking for a (very) lightweigted portal framework, which is based on ASP.NET. I know there systems like "DNN", "Umbraco" or "Sharepoint Foundation 2010". But these frameworks seem to me a little bit too heavy and swollen. What are good and slim alternatives (free use for commercial purposes) ? The framework should provide at least provide support for navigation, authentication and basic CMS. And it should be possible to integrate other aspx pages (applications) in webparts or similar containers.

Answer 1

How about "Kooboo" ? --> http://kooboo.codeplex.com/

or "Mojoportal" --> http://www.mojoportal.com/

Answer 2

I think that Umbraco actually seems quite lightweight I don't think you should dismiss it on grounds of being to heavy.