Adobe released beta versions of three programming projects for producing online applications that run in its Flash Player: First is Flash Catalyst, a programming tool that lets designers create a Flash application's user interface in Adobe's Photoshop and Illustrator applications. Second, is Flash Builder 4 (previously called Flex Builder) is based on the Eclipse programming software, employs Adobe's open-source Flex framework for building advanced Flash applications and is for the serious programming set who works in an integrated development environment (IDE). Finally, the beta of Flex 4 framework that provides underpinnings for Flash applications, including everything from user interface components to animation technology. Flex 4, code-named Gumbo, is an open-source project.
More info: CNET