Before I ask my question, I'm going to preface it by saying that it is not intended as a criticism of anyone's favorite language, but something I'm genuinely cu

Before I ask my question, I'm going to preface it by saying that it is not intended as a criticism of anyone's favorite language, but something I'm genuinely curious about. Here's the question: what substantial pieces of software are written in a functional style (lisp or otherwise). I'm curious because I've used functional languages in the past and even written some fairly substantial projects in one of them (a toy compiler written in Ocaml), however, I've never left with the impression that they are superior to other languages. In my experience functional languages give you some convenience with doing functional things while making lots of other things slightly more difficult.