Magic User Interface (MUI) is still the primary toolkit on MorphOS, in addition to being the go-to toolkit for many newer Amiga programs as well. When it was r

Magic User Interface (MUI) is still the primary toolkit on MorphOS, in addition to being the go-to toolkit for many newer Amiga programs as well. When it was released in 1993, it was very modern. Object-oriented, scalable layout, simple to program, themeable and very customiseable. I wouldn't be surprised if the developers of Qt, Gtk and SwiftUI would reveal that they would have taken inspiration from it. https://en.wikipedia.org/wiki/Magic_User_Interface https://en.wikipedia.org/wiki/Magic_User_Interface http://www.sasg.com/mui/ http://www.sasg.com/mui/