I was looking through the posts for Flex and I admit I am new and to Flex and never though about giving it a try. Before I dive in, I want to understand what IDE support is available. I read about Adobe Builder but I think it has a commercial license. Any Eclipse plugins or support?
Also, currently I am just working with Spring and Tomcat. If I plan to use Flex how does the technology stack change? Do we develop web applications in a similar fashion?