ZK is the most popular open source SourceForge Ajax web framework that enables rich user interface for web applications with no JavaScript and little programming. This firstPress book will cover the following: • Shows you how to use this simplest Ajax framework to write real-world responsive web applications • Covers ZK's more than 70 XUL and 80 XHTML rich GUI components • Authoritatively written by cofounder/lead of the ZK project