Is that for Gluon? Sorry for not looking it up myself, but it's probably worth pointing out that at least Swing has (kindof) Oracle and a major Java desktop app behind, whereas JFX hasn't seen any love at all. I played around with JFX a couple years ago but there were serious problems with its WebKit integration. Coming to think about it, I'm wondering if there are any plans to integrate JFX and WebKit on GraalVM as a serious Electron contender.