(1) For the Chromium-based operating system, see
ChromeOS Flex.
(2) A development system for Flash-based applications from Adobe. Introduced in 2004 as a J2EE application, Flex compiles ActionScript programming code and XML-based user interface descriptions (MXML) into binary Flash files (.SWF files). It also includes a variety of user interface functions for creating rich client applications. See
Adobe AIR,
Flash,
MXML and
ActionScript.