Re:Apache Foundation disallows use of the Facebook “BSD+Pate...
by chrisco255 on Sunday July 16, 2017 @05:19AM
(#14781248)
Google hardly dogfoods Angular. They use Closure for most of their apps. SPF for YouTube. Polymer in some places. GWT in many others.
https://github.com/facebook/react/wiki/sites-using-react
...that's obviously not complete, either. If you think of a large tech company the odds are they are using react somewhere for something, be it public facing or internal tooling. Many of the companies that aren't actively using React do so because they have their own JS stacks to dogfood (like Google and Angular).