The latest release as of the last modification of this page is 0.9.0.
ASDF-install package (obsolete) http://common-lisp.net/project/cl-irc/cl-irc_latest.tar.gz
cl-irc
cl-irc is an IRC library written in Common Lisp. It features DCC,
CTCP and most, if not all, of the IRC client protocol. More information
can be obtained at common-lisp.net.