<@U9GBKAZ4G> to answer your question, TornadoFX do...
# tornadofx
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@elexx to answer your question, TornadoFX does offer lightweight REST and JSON support for whatever you wish to use. TornadoFX is flexible on things like that, but I always say as a default rule - if JavaFX can do it, TornadoFX can most definitely do it.