Quoted: A comprehensive list of AJAX frameworks, code libraries and tools.

Quoted: SmartClient is the mature AJAX GUI system for high-performance, high-productivity business web applications.

Quoted: LINB(Lazy Internet and Browser) is designed to allow developers coding in a more targetable, clearly, and efficiently way, which is platform-independent, language-independent, and C/S, B/S, RIA compatible. jsLINB is a javascript toolkit that provides complete client-side solution for most modern browser (IE6.0 / IE7.0 / firefox1.5 / firefox2.0 / opera9 / Safari2.0, Safari test little).

Quoted: Anyone who has been following the development of AJAX frameworks has heard of ZK, the server-side component GUI framework that allows you to write applications like you would a desktop app. It has become one of the most popular projects on sourceforge and has been nominated for a 2006 Sourceforge.net Community Choice Award.