[cess11]

I don't know, I think the Racket GUI toolkit and JavaFX work fine for building cross platform standalone applications.

[tonsky]

That’s two perfect examples! Racket seems to try to use native widgets, and looks horrible as a result, at least on macOS

JavaFX uses the same approach as Humble UI: they draw all the widgets themselves and have custom cross-platform look and feel.

We aim to be better quality version of JavaFX