Bifrost is an application development framework promoting good development practices. The backend development is focused on CQRS (Command Query Responsibility Segregation) for promoting Domain Driven Design.
The fronted development is focused on MVVM (Model View ViewModel) for promoting better separation.
To get an idea of how the framework will help you get up and running fast, have a look here : http://vimeo.com/30971308
For more details, samples, documentation, please go to the official site