hyperspec-lookup
hyperspec-lookup is an ANSI Common Lisp documentation tool that gives the user an interface to mapping symbols to URLs for the Common Lisp Hyperspec and Common Lisp Object System (CLOS) MetaObject Protocol.

More information here.

ASDF-install package (obsolete) http://common-lisp.net/project/hyperspec-lookup/hyperspec-lookup_latest.tar.gz