There's a balance to be found by each app developer between roll-your-own and just-use-a-web-browser. There's room in there for Ultralight, Awesomium, Chromium

There's a balance to be found by each app developer between roll-your-own and just-use-a-web-browser. There's room in there for Ultralight, Awesomium, Chromium, Dear Imgui, SDL, Cairo, WPF, even GDI+. That's basically because (I think) there's still a lot of effort being put into recreating UIs - especially for apps, games, and embedded. (In embedded, as in, embedded systems running linux or VxWorks or something, the story is less well known, but it's the exact same balance and set of choices.)