MXML Adobe Flash Builder List of user interface markup languages BlazeDS User interface markup language Apache Flex MACS3 OpenLaszlo OpenPlug Extensible Application Markup Language Adobe AIR "Hello, World!" program Declarative programming ActionScript List of XML markup languages List of programming languages by type Comparison of user interface markup languages SWF Comparison of JavaScript-based web frameworks Comparison of server-side web frameworks Comparison of integrated development environments