- One is an FFI binding for CLISP by John Hinsdale. As of CLISP 2.31, it has become incorporated as a module.
- Another one is a Common Lisp FastCGI library and server for CMUCL by Teemu Kalvas. As the original website is gone, the library has been archived here. This is a complete implementation of the FastCGI binary packet protocol in Lisp, from scratch.
- SB-FastCGI is a Common Lisp FastCGI API Toolkit for SBCL, It contains a group of low-level APIs which like the C API of FastCGI, a group of fcgi-server implementations, and a high-level WSGI style interface. See http://kdr2.com/project/sb-fastcgi.html.
- CL-FastCGI is a generic version of SB-FastCGI, targeting to run on mostly Common Lisp implementations. See http://kdr2.com/project/cl-fastcgi.html.
Note that running FastCGI doesn't require a module in Apache or other httpd. All that's needed is this useful program.