OSGi bundle (JavaFXLauncher) to launch JavaFX application, and service definition (JavaFXApplication and AbstractJavaFXApplication) to provide access to the primary stage of the JavaFX Application.
This is a component created with OSGi Declarative Services and provides a simple launcher for JavaFX applications.
For an example of how to use this, see winnall/OSGiJavaFXUsage, which describes a very simple case.