Given that there are many types of GUI applications for the JVM, Kotlin has separated some platform-specific coroutine functionality into libraries.

• kotlinx-coroutines-android
• kotlinx-coroutines-javafx
• kotlinx-coroutines-swing

Notice that all these platforms have the same UI model that we talked about before, in which only the UI thread can create and update the views. So, these tiny libraries are simply a CoroutineDispatcher that is implemented to confine coroutines to the UI thread.