As far as the "UI stuff" goes sadly the Python ecosystem is way better - Python has both PyQL and Pyside which are a very solid choice for doing thicker client

As far as the "UI stuff" goes sadly the Python ecosystem is way better - Python has both PyQL and Pyside which are a very solid choice for doing thicker client apps. Ruby doesn't even have decent Qt bindings, at all. Or didn't the last decade I've been checking.