A free and portable Common Lisp Webserver.
Portable AllegroServe is a variant of AllegroServe(tm) with an explicit emphasis on portability between Lispsystems and Operating Systems. You can find the original AllegroServe at https://github.com/franzinc/aserve
The best way to install Portable AllegroServe is through Quicklisp (http://quicklisp.org/). (The best way to install any Lisp library is through Quicklisp.)
3store is an RDF "triple store", written in C and backed by MySQL and Berkeley DB. It is an optimisation and port of an older triple store (WebKBC). It provides access to the RDF data via RDQL or SPARQL over HTTP, on the command line or via a C API.
Lisplets are Java Servlets that forward their requests, and gather their response headers, using s-expressions over sockets. They enable easy integration of Common Lisp or Scheme into a Java-based web environment.
The Lavlet HTTP server and Lisp Server Pages engine is a complete ANSI Common Lisp web server and dynamic pages engine for Lisp modeled after JSP/Servlet/Tomcat and ASP/IIS.