[Morthor]

Flutter is an option as well. https://flutter.dev

With the release of Flutter 2.0, desktop support is now fully available. Windows, Linux, and MacOS. This on top of the existing iOS and Android support. Web was also officially released.

[poletopole]

I just finished a 300 page book on Dart which took all night to read. I've been hunting for an alternative to RN and heard about flutter and it definitely is as close as you're going to get. Overall, Dart gets the job done with the modern features you would expect and Flutter reminds me of SwiftUI. So I definitely have to second Flutter, but I guess the proof is in the pudding.

[kowlo]

Is it still resource hungry, like making an app in Unity?

[colesantiago]

hmm, it doesn't look production ready yet.