Voting

I belive GWT and Flex orffes the benefit of a more component oriented development and the reusability of them due to they are a big framework. Flex also can relay on many other frameworks to implement patterns such as MVP variants and support for IOC. Flex seems to be easier to extend and customize if you know ActionScript. Also Flex orffes the possibility to work with serialization technologies such as AMF3, really cool, and many other ways to integrate with backend services such as Blaze. JQuery orffes the benefit of being able to be used on small apps (or implemented on alredy existing projects) where the use of Flex or GWT would be excesive or would suppouse rewriting the entire presentation layer also is able to achieve nice L&F and tremendously reduce javascript code typing.Each one is quite good on what it does and I wouldn't marriage with any but would examine each project requirements and decide which would fit my needs better.