Famous MVVM frameworks

• MVVM Light Toolkit (http://mvvmlight.codeplex.com/): A popular framework supporting both WPF and Silverlight (and now with Windows 8 Store apps as well), written by Laurent Bugnion.
• Simple MVVM Toolkit (http://simplemvvmtoolkit.codeplex.com/): Works with WPF, Silverlight, and Windows Phone 7.x. Claims to be more feature rich than MVVM Light Toolkit.
• Caliburn Micro (https://github.com/Caliburn-Micro/Caliburn.Micro/): A feature rich framework, closer to Prism in functionality (see next section) that works with WPF, Silverlight, Windows Phone 7.x, and the n ew Windows 8 Store style applications.