CPAINT (Cross-Platform Asynchronous INterface Toolkit) is a true AJAX (Asynchronous JavaScript XML) and JSRS (JavaScript Remote Scripting) implementation that supports both PHP and ASP/VBscript.
A. Blackwell. End-User Software Engineering, volume 07081 of Dagstuhl Seminar Proceedings, Internationales Begegnungs- und Forschungszentrum für Informatik (IBFI), Schloss Dagstuhl, Germany, (2007)