My television uses Qt. My phone uses Qt. I could buy a car that uses Qt. I can fly on a plane that uses Qt on its infotainment center. All these things use Qt Quick as their UI. Why? Because it provides faster development—no waiting around for compiling—and the syntax is easy to use, but complex enough to customize it beyond your imagination.
Qt Quick started out being developed in the Brisbane development office of Trolltech as one developer's research project. One of my jobs was to put a demo app of an early version of it onto a Nokia N800 tablet, which I had customized to run Qtopia instead of Nokia's Maemo interface. This was before Nokia purchased the Trolltech company. In my opinion, it was going to become the next generation of Qtopia, which had been renamed Qt Extended. Qtopia, by 2006, had been sold on millions of phone handsets, including 11 models of phones and 30 various handheld devices. Some parts of Qtopia were melded into Qt itself – my favorites...