I'm happy to announce the first release of KotlinFX! This release marks the fact that KotlinFX is now complete enough to provide substantial benefits in practice.
KotlinFX is a layer on top of JavaFX 8 in the same vein as ScalaFX and GroovyFX are. The main benefits of KotlinFX over pure Kotlin for JavaFX 8 are UI Builders, Extension Properties for getters and setters, more natural JavaFX Binding Expressions and alternative reactive expressions. Take a look at the KotlinFX Wiki, especially the page “Why KotlinFX”, for more details.
There is still a lot of interesting stuff to do. If you want to take a stab at one of these remaining issues you're more than welcome.