XAML Power Toys is a Visual Studio 2008 SP1 Multi-AppDomain Add-In that empowers WPF & Silverlight developers while working in the XAML editor.  Its Line of Business form generation tools, Grid tools,  DataGrid and ListView generation really shorten the XAML page layout time.

XAML Power Toys generates .NET 3.5 SP1 WPF compliant XAML and Silverlight 2 compliant XAML.

It’s accessed through commands in the XAML editor context menu and the Solution Explorer item context menu.

Link: http://karlshifflett.wordpress.com/xaml-power-toys/