Builder 2, Standard and Professional. The Professional version includes the Flex Charting Components library. Enterprise-oriented services remain available through Flex Data Services 2. This server component provides data synchronization, data push, publish-subscribe and automated testing. Unlike Flex 1.0 and 1.5, Flex Data Services is not required for the deployment of Flex applications. Coinciding with the release of Flex 2, Adobe introduced a new version of the ActionScript programming language, known as Actionscript 3, reflecting the latest ECMAScript specification. The use of ActionScript 3 and Flex 2 requires version 9 or later of the Flash Player runtime. Flash Player 9 incorporated a new and more robust virtual machine for running the new ActionScript 3. Flex was the first Macromedia product to be re-branded under the Adobe name. Adobe Flex 3 On April 26, 2007, Adobe announced their intent to release the Flex 3 SDK (which excludes the Flex Builder IDE and the LiveCycle Data Services) under the terms of the Mozilla Public License. Adobe released the first beta of Flex 3, codenamed Moxie, in June 2007. Major enhancements include integration with the new versions of Adobe's Creative Suite products, support for AIR (Adobe's new desktop application runtime), and the addition of profiling and refactoring tools to the Flex Builder IDE. Adobe Flash Builder and Flex 4 Adobe released Flex 4.0 (code named Gumbo) on March 22, 2010. The Flex 4 development environment is called Adobe Flash Builder, formerly known as Adobe Flex Builder. Some themes that have been mentioned by Adobe and have been incorporated into Flex 4 are as follows: Design in Mind: The framework has been designed for continuous collaboration between designers and developers. Accelerated Development: Be able to take application development from conception to reality quickly. Horizontal Platform Improvements: Compiler performance, language enhancements, BiDirectional components, enhanced text (Flex 4 includes the new Text Layout Framework). Full Support for Adobe Flash Player 10 and above. Broadening Horizons: Finding ways to make a framework lighter, supporting more deployment runtimes, runtime MXML. Simpler skinning than the previous versions. Integration with Adobe Flash Catalyst. Custom templates Flash Builder is available in two versions: Standard and Premium, the premium adds the following features; Testing tools Memory and performance profilers An automated testing harness to connect to all the leading testing tools FlexUnit support command-line build capability Adobe Flash Builder 4.5 and Flex 4.5 May 3, 2011, Adobe shipped Flash Builder 4.5 copying Flex