Originally it was written by Sven Van Caekenberghe. It is now being maintained by Sven Van Caekenberghe, Rudi Schlatte and Brian Mastenbrook.
Repository: https://gitlab.com/ambrevar/s-xml-rpc
s-xml-rpc
s-xml-rpc (https://common-lisp.net/project/s-xml-rpc) is an implementation of the XML-RPC protocol in Common Lisp for both client
and server.