Scheme is mostly used for teaching, but there are many production applications out there written in Lisp (Emacs for example). Also I'd like to mention Clojure, which is "lispy" and used by big cooperations.
Current racket is running on top of chez scheme - which is maintained by Cisco - and reportedly extensively used in commercial products (router firmware/os etc).
Current racket is running on top of chez scheme - which is maintained by Cisco - and reportedly extensively used in commercial products (router firmware/os etc).
https://cisco.github.io/ChezScheme