* Agavi is a general purpose PHP application framework built around the Model-View-Controller architecture originally based on the Mojavi 3 Web application framework written by Sean Kerr. It provides a rich toolset that solves most of the routine problems in Web application development. * Agavi is designed for serious development. It is not a complete website construction kit but rather a skeleton over which you build your application. The architecture of Agavi allows developers to retain very fine control over their code. Agavi itself is written to be extensible, and powerful. Whereas this documentation serves as an important resource, many developers are comfortable learning from Agavi's source code. * Agavi strives to leave most implementational choices to the developers. Agavi's components are inherently extensible, and the framework itself is designed around a XML-based configuration system that provides a very flexible environment. For you — as a developer — this architectural style means that you are required to perform less hacking (or, in most cases, none at all!) at the framework level and therefore have more time to get your application written. * The framework works for almost all kinds of applications but excels most in large codebases, long-term projects, extreme cases of integration and other special situations.

* The GWT SDK provides a set of core Java APIs and Widgets. These allow you to write AJAX applications in Java and then compile the source to highly optimized JavaScript that runs across all browsers, including mobile browsers for Android and the iPhone. * Constructing AJAX applications in this manner is more productive thanks to a higher level of abstraction on top of common concepts like DOM manipulation and XHR communication. * You can debug AJAX applications in your favorite IDE just like you would a desktop application, and in your favorite browser just like you would if you were coding JavaScript. The GWT developer plugin spans the gap between Java bytecode in the debugger and the browser’s JavaScript. * GWT contains two powerful tools for creating optimized web applications. The GWT compiler performs comprehensive optimizations across your codebase — in-lining methods, removing dead code, optimizing strings, and more. By setting split-points in the code, it can also segment your download into multiple JavaScript fragments, splitting up large applications for faster startup time. * When you’re ready to deploy, GWT compiles your Java source code into optimized, stand-alone JavaScript files that automatically run on all major browsers, as well as mobile browsers for Android and the iPhone.