Qt is a very robust GUI framework in a C++ environment, but since version 5.0 allows fast UI development using a scripting language called QML that interacts we

Qt is a very robust GUI framework in a C++ environment, but since version 5.0 allows fast UI development using a scripting language called QML that interacts well with its C++ underlying engine. It's like designing for the web but with a lot of extra perks. Barring that, there is also Elm for static web GUI programming which is worth a look.