GitHub: N/A
Stack Overflow: 76
Description: Flex is a highly productive, free open source framework for building and maintaining expressive web applications that deploy consistently on all major browsers, desktops, and operating systems.
Language: ActionScript
Framework Link: http://www.adobe.com/products/flex.html
GitHub Link: https://github.com//
Stack Overflow Questions: http://stackoverflow.com/questions/tagged/flex