Adobe Flex

Flex is developed with cairngorm MVC framework. Flex UI looks like SWING in web browser. It uses MXML tags to create UI components like HTML tags with SWING like event listeners. It supports ActionScript which is verymuch like Javascript and Java.

Flex + ActionScript is a combination of JAVA + Java Script + HTML + SWING. The communication with server is asynchronous, but there are ways to make it synchronous.

Still it lacks way to exchange data between client and server in easiest way. We have to depend on BlazeDS for data exchange.

Using Flex Builder we can build Flex applications. Flex builder is developed on Eclipse IDE and its not free.