Swift is a programming language created by Apple, it's been cross-platform for a while but is now going to be officially supported on Windows. Swift is Apache licensed.
SwiftUI is a UI framework created by Apple for the Swift language, it's only available on Apple platforms, and it's proprietary.
Thanks for the correction! I knew of the distinction, but in my haste I was looking at a different repo (and I blanked that the source hasn't been released and licensed).
Swift looks to be Apache licensed. I'm fairly confident SwiftUI wouldn't have a commercial license, which is a major topic with using Qt.
