What's the reason that you're using React to build your apps' UIs? I mean the “real” reason why you chose it over other equally “tempting”, powerful JavaScript component libraries? Is it its virtual DOM? Or is it because it empowers you to model the state of the user interface and to declaratively describe it? Or is it its... components actually? Speaking of which: here are the 5 most popular React libraries — open source component libraries — that you should be following on GitHub. Note: it's the number of stars on their various repositories that I've used as...