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.
M. Liffiton, B. Sheese, J. Savelka, and P. Denny. Proceedings of the 23rd Koli Calling International Conference on Computing Education Research, page 1–11. New York, NY, USA, Association for Computing Machinery, (Feb 6, 2024)