I started thinking about this the other day because of this question at we-turned-everything-into-a-google-trap-and-now-it-has-ai-too-dot-com, with-a-subscripti

I started thinking about this the other day because of this question at we-turned-everything-into-a-google-trap-and-now-it-has-ai-too-dot-com, with-a-subscription-business-model (https://www.quora.com/As-someone-who-does-some-programming-for-fun-why-is-making-even-basic-GUIs-difficult-compared-to-console-programming-Is-it-just-me-trying-to-learn-it-myself-or-is-windows-API-generally-difficult-to-deal-with https://www.quora.com/As-someone-who-does-some-programming-f...) One of the answers does mention FLTK, which I should have included above.