Name something specific. Note for two x-platform UI toolkits I have some familiarity with: Python + tkinter == about the same size as electron Java + JavaFX

Name something specific. Note for two x-platform UI toolkits I have some familiarity with: Python + tkinter == about the same size as electron Java + JavaFX == about the same size as electron Sure there are people who write little applets for software developers that are 20k Win32 applications still but that is really out of the mainstream.