I have been looking at this for an upcoming project where we need to handle a ton of persistent HTTP clients. Regular Vert.X is "fine" but TBH having all the callbacks sucks. My only reservation to using Kotlin is IDE support. I know its great in IntelliJ but licenses are expensive and I don't want to advocate something that ties us to a single IDE. Lots of our guys use Eclipse and VSCode.

I know there's plugins for Kotlin support in other IDE's, have you used them and if so are they any good?