I was recently pleasantly surprised as to how well a .jar works on macOS, Windows, and Linux - but only after you install a JRE, unfortunately. Golang seems to

I was recently pleasantly surprised as to how well a .jar works on macOS, Windows, and Linux - but only after you install a JRE, unfortunately. Golang seems to have good cross-platform abilities as well, though I have less experience with it for GUI apps.