Common Lisp and SmallTalk have rapid dev models by working in a running image, CLOG gives Common Lisp a foss visual IDE moving closer to its goal of marriage of CL+Pharo+VB.
Dude, incredible work. I've only discovered CL in the last couple of months and everything I learn and discover brings me so much joy after being solidly disillusioned with programming after a decade-ish career. The first page of your tutorial cracked me up and a quick glance at CLOG has blown my mind. I can't wait to dig into it all.
The state of their website isn't exactly reassuring. Not so much as a screenshot of their toolkit in action.
If I were writing GUI code in Ada I'd probably use the GTK bindings (GtkAda). They're maintained by AdaCore and are used by the GNAT Studio IDE so the 'dogfooding' factor is there.
Since it uses a browser for rendering, new innovations are likely to show up in browser before gtk (can use GNOGA with browser apis for tts, web rts, speach rec, etc) and same with likelihood to a new platform. For example GNOGA can be used on mobile (there is at least one mobile app currently using it) it is used on embedded platforms for UIs etc.
I think it is catchy and saying "I tapped danced my frontend" seems to work for me and reflects the speed of development that CLOG and Common Lisp offer. https://en.wikipedia.org/wiki/Clog_dancing