Magellan is a lightweight framework that makes it easy to build WPF navigation applications. It is inspired by the ASP.NET MVC framework. The main features are:
Model-View-Controller support
Action filters for cross-cutting concerns such as authorization and redirection
Blend behaviors to make navigation easy
Transitions between pages
Magellan was drawn from a number of samples I had put together early this year and some work done on a client project.