The documentation for HT-AJAX library including a small tutorial can be found here.
HT-AJAX is written in Common Lisp and aims to be portable across implementations as well as web browsers. Patches, bug reports, requests and comments are welcome.
The package has found a new home at common-lisp.net, as the author could not be reached anymore. If you are the author, please send email to rt at common dash lisp dot net so that we can get in touch.