Build engaging, cross-platform rich Internet applications
Flex is a highly productive, free, open source framework for building expressive web applications that deploy consistently on all major browsers, desktops, and operating systems by leveraging the Adobe® Flash® Player and Adobe AIR® runtimes. While Flex applications can be built using only the free Flex SDK, Adobe Flash Builder™ (formerly Adobe Flex® Builder™) software can accelerate development through features like intelligent coding, interactive step-through debugging, and visual design of the user interface layout.
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- See what customers have built
- Take the Tour de Flex
Get informed
News
Adobe, open markets, and Flash
Read Adobe's position on open markets and your right to choose technologies.
Flash Builder 4 now shipping
See how Flash Builder 4 (previously Flex Builder) makes RIA development more productive and expressive.
Adobe and Zend announce collaboration
Adobe and Zend have announced a new collaboration for creating Flex applications powered by Zend Framework.
Adobe and SpringSource announce collaboration
SpringSource has added support for BlazeDS and Adobe LiveCycle® Data Services in its latest releases, making integration with Flex easy.
Flex is open source
Flex is now open source since the release of Flex 3.
