I just updated my MVVM frameworks explorer Silverlight application. You can find the updated application here.
Here is the top 5 of MVVM frameworks supporting WPF, Silverlight and Windows Phone 7:
- MVVM Light (61k downloads)
- nRoute (19k downloads)
- Caliburn Micro (18k downloads)
- Simple MVVM toolkit (5k downloads)
- Catel (5k downloads)