FencelForm offers the following advantages: Uses Pure C#. Fully programmatic RAD. No XAML, Blend or VS 2010 Designer is required (however, FencelForm can integrate with XAML if desired.) Runtime-driven. Your application can create grid layouts and text formats from scratch or modify existing ones. Source code included. Complete, modular, and well-documented code keeps the user from being frustrated should he feel the need to make a ?must have? modification. Works with both Silverlight and WPF. Common source, different .DLL. No royalties.