OpenSwiftUI – An Open Source Re-Implementation of SwiftUI
Interesting detail about Square that I learnt on Twitter shortly after SwiftUI was launched...Square sold iPads with their software on as "appliances", so they can't deprecate them on a schedule like most software. For this reason the Square iOS codebase (which is a single codebase) must support back as far as iOS 9.Because of this, they're considering an internal implementation of SwiftUI so that they can start using it now, rather than in ~5 years time. I wouldn't be surprised if they open sourced this if they do go ahead with it.