Apache Flex SDK is the open-source software development kit maintained by the Apache Software Foundation for building applications using Adobe’s Flex framework—primarily targeting Flash runtime and AIR for rich internet applications. The Apache Flex SDK defaults to using the Adobe Flash Player 11.1. The SDK can be used with Flash Player versions 10.2 and up. The Apache Flex SDK uses third-party code that will be downloaded as part of the build. In addition, you can choose to download...