The lisp-cgi-utils is a software package for developing CGI scripts with Common Lisp. It implements a very basic HTTP/CGI interface (sending headers, getting GET/POST and environment variables) and offers tools for easier HTML generation with special support for handling HTML forms.
lns.http is a simple framework for writing Common LISP Web applications. It handles the incoming connections, parses HTTP headers and queries, and finally hands control over to your URL handler. It is an HTTP/1.1 compatible Web server, but tries to achieve compatibility with lesser (down to the informal HTTP/0.9) clients.