JsOrb is a Java - JavaScript ORB that allows developers to access their POJOs and business logic from the browser (or any JavaScript interpreter). JsOrb is designed to make it easy to build dynamic websites without needing to learn AJAX.
JPSPAN provides tools to "hook up" PHP and Javascript, for the purpose of fetching data from PHP into a web page which has already loaded, without reloading the entire page. It allows you to call remote PHP objects as local Javascript objects