Google Web Toolkit (GWT) is a Java software development framework that makes writing AJAX applications like Google Maps and Gmail easy for developers who don't speak browser quirks as a second language. Writing dynamic web applications today is a tedious and error-prone process; you spend 90% of your time working around subtle incompatabilities between web browsers and platforms, and JavaScript's lack of modularity makes sharing, testing, and reusing AJAX components difficult and fragile.
GWT lets you avoid many of these headaches while offering your users the same dynamic, standards-compliant experience. You write your front end in the Java programming language, and the GWT compiler converts your Java classes to browser-compliant JavaScript and HTML.
一个基于Java的应用开发框架，可以用Java开发前端应用并将其转换为使用AJAX实现的JavaScript/HTML应用。用来开发企业应用，特别是web office这种应用是特别合适的。
Downlaod: Google Web Toolkit (GWT) 1.3.3
Shareware web: http://www.google.com/