This is all true, and if I were building a tool which I'd expect to be widely use I'd approach it as a common core with platform specific GUI layers like Ghostty (and I'm sure other applications) does.
Sometimes though you're throwing together a quick and dirty UI for a specific use case that you just want to run on a bunch of different platforms and this sort of toolkit is great for that. It can be the difference between the application existing at all and it being available on a range of operating systems.
Comments
This is all true, and if I were building a tool which I'd expect to be widely use I'd approach it as a common core with platform specific GUI layers like Ghostty (and I'm sure other applications) does.
Sometimes though you're throwing together a quick and dirty UI for a specific use case that you just want to run on a bunch of different platforms and this sort of toolkit is great for that. It can be the difference between the application existing at all and it being available on a range of operating systems.