X is a collection of loosely-bound, cross-browser, Javascript functions and objects. It is intended to be a resource from which you pick and choose - you do not have to include the entire library in your application.
CPAINT (Cross-Platform Asynchronous INterface Toolkit) is a multi-language toolkit that helps web developers design and implement AJAX web applications with ease and flexibility. It was originally born out of the author's frustration and disappointment with other open-source AJAX toolkits.
A JavaScript toolkit that saves you time and scales with your development process. Provides everything you need to build a Web app. Language utilities, UI components, and more, all in one place, designed to work together perfectly.
An easy-to-use JavaScript "class" that adds autocomplete dropdown functionality to HTML text input fields through RPC/Ajax. Similar to Google Suggest, it allows multiple instances per page and is compatible with every major browser except Safari.
prototype.js is a JavaScript library initially written by Sam Stephenson. This amazingly well thought and well-written piece of standards-compliant code takes a lot of the burden associated with creating rich, highly interactive web pages that characterize the Web 2.0 off your back.
qooxdoo is a universal JavaScript framework with a coherent set of individual components and a powerful toolchain. It is open source under liberal licenses and supported by the qooxdoo community around the world.
This is a step by step description of how to use the PHP IDE and Ajax Tools to create a Rich Internet Application. Following these steps will provide you with a tour of the PHP IDE and Ajax Tools functions.
jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.