"NHaml is an external DSL for XML. It's primary qualities are it's simplicity, terseness, performance and that it outputs nicely formatted XML. Additionally, the NHaml view engine provides support for Rails style layouts and partials and ships with an ASP.NET MVC view engine."
"Bling is a C#-based library for easily programming images, animations, interactions, and visualizations on Microsoft's WPF/.NET. Bling is oriented towards design technologists, i.e., designers who sometimes program, to aid in the rapid prototyping of rich UI design ideas. "