> Definitely. It looks like most any MSVC++/etc app on Windows. Don't know
> about Mac. Maybe Lyle (FxRuby author) can comment?

FOX is not supported on MacOS and probably won't be anytime soon. It's one
of those things that a few people have expressed interest in, but no one's
actually offered the resources (hardware, time, etc.) to actually get the
work underway.