Electron.
@helge @gruber …how do you personally define native? Because virtually the entire OS is Objective-C/Cocoa, so if you're writing Swift code it's all 'non-native’ 😅 That's a bolt-on runtime with a translation layer and non-native idioms.
If it emits native code, talks to the same system frameworks, and is used to build the system apps, it's ‘native’.