That doesn't answer his question. BuiltWith relies heavily on response headers, which are easily faked, and often not descriptive on the actual tools used. Many

That doesn't answer his question. BuiltWith relies heavily on response headers, which are easily faked, and often not descriptive on the actual tools used. Many use nginx, varnished, even apache to run their applications, regardless of how they were built. It is a nice tool though, I'll admit.