- ubuntu touch UI framework / suru: qt 5 based, so slightly outdated underpinnings, but still actively maintained https://docs.ubports.com/en/latest/humanguide/index.html
- flutter: developed by google as a cross platform framework, tied to the dart programming language. https://flutter.dev/
- Canonical has created custom widgets for flutter, if you don’t like material design: https://pub.dev/packages?q=ubuntu
- uno.platform: C# framework for cross platform apps. https://platform.uno/













Compose multiplatform https://www.jetbrains.com/compose-multiplatform/