The examples here look more interesting than libui

https://github.com/vurtun/nuklear

There’s a typical window app, game ui, something that looks like unreal engines visual programming.

Seems like a flexible system

Haven’t actually tried to use it though. That’s where it will win or lose, IMO

Edit: and just got to end of the README. Bindings available for rust, python, go, lua, java and more. Gonna have to kick the tires on this one.