You should check out JavaFX. It has a full set of cross platform widgets, can be styled with CSS, is hardware accelerated with Direct3D on Windows and OpenGL on

You should check out JavaFX. It has a full set of cross platform widgets, can be styled with CSS, is hardware accelerated with Direct3D on Windows and OpenGL on Linux/Mac. You can do arbitrary 3D transforms of any part of the scene graph, but it also has sophisticated widgets like table views, tree views, CalendarFX, etc. There's a Material Design library for it called JFoenix. There's a visual GUI builder for it. It can play and stream hardware accelerated video. The entire toolkit is designed for reactive programming, there are libraries like ReactFX that go further and add the very latest and most advanced combinators. It's fully open source and developed on github. It's really not that bad but the world seems to ignore it.