GWT is a powerful development toolkit specifically designed for creating and optimizing complex browser-based applications. With GWT, developers can build high-performance web applications without needing to be experts in browser quirks, XMLHttpRequest, or JavaScript. This open-source toolkit is completely free and widely used by thousands of developers worldwide.

It offers a comprehensive set of Java API libraries, a compiler, and a development server, allowing developers to write client-side applications in Java and deploy them as JavaScript. The GWT SDK provides a wide range of core Java APIs and Widgets, enabling developers to construct AJAX applications in Java and compile them into highly optimized JavaScript that runs seamlessly across all browsers, including mobile browsers for Android and iPhone. Debugging AJAX applications is made easy with GWT, as developers can utilize their favorite IDE and browser debugger tools to set breakpoints, inspect variables, and more.

GWT also offers powerful optimization tools, including a comprehensive code compiler that performs various optimizations, such as in-lining methods and removing dead code. Developers can also utilize Speed Tracer, a Chrome Extension, to diagnose performance issues in the browser. When it comes to deployment, GWT compiles Java source code into optimized, stand-alone JavaScript files that can automatically run on all major browsers, as well as mobile browsers for Android and iPhone.

To get started with GWT, simply download the SDK and follow the in-depth tutorials to become proficient in GWT development