Cool. Recently I had to decide on a cross-platform solution for Mac, Windows, and potentially iOS and Android. After looking into quite a few candidates and reading a lengthy thread on here covering that very topic, my conclusion (and that of the HN thread as well) was that Qt was still the most viable solution. That is what we went with, and it's working out reasonably well. But I have wondered about game engines and Godot specifically, given its lighter, 2-D focus.

Our app makes use of quite a few system/hardware resources, like USB and Bluetooth. Qt (irritatingly) lacks a USB library, so it has no advantage over a game engine there. But what about other system utilities like menus, disk access, and so forth? And of course mobile targets seem problematic. Can anyone weigh in on Godot vs. Qt for cross-platform/cross-device-type applications?