Every native toolkit has its own idiosyncrasies. Some are closer to the OS official look, which changes along the years, some are different. I'm for a relaxed d

Every native toolkit has its own idiosyncrasies. Some are closer to the OS official look, which changes along the years, some are different. I'm for a relaxed definition: if it's graphical it's a GUI, if it's text it's a TUI. Then we have larger or smaller rendering libraries. The browser is a particularly large one but often it's got the advantage of automatic app updates.