JavaFX, especially when used with Kotlin and TornadoFX, is really nice. We're now at the point where you can bundle your app, JVM pieces needed, into a single

JavaFX, especially when used with Kotlin and TornadoFX, is really nice. We're now at the point where you can bundle your app, JVM pieces needed, into a single distributable for each platform. With Graal and whatever else on the horizon there might even be just plain compiled-to-native options coming too. If you don't like the JVM ecosystem I think QT also has potential but it seems much more difficult and labor intensive to create a decent application.