For moderately small apps, Red language offers a cross-platform (Win32, Cocoa and GTK) graphical engine with an embedded DSL for declarative GUI specification.

For moderately small apps, Red language offers a cross-platform (Win32, Cocoa and GTK) graphical engine with an embedded DSL for declarative GUI specification. As a baseline comparison, 7GUIs task implemented with it clock under 300 LOC. https://www.red-lang.org/2016/03/060-red-gui-system.html https://www.red-lang.org/2016/03/060-red-gui-system.html https://eugenkiss.github.io/7guis/ https://eugenkiss.github.io/7guis/ https://github.com/9214/7guis-red https://github.com/9214/7guis-red