Flex.org - Rich Internet Applications, Rapid Web Application Development, Open Source Flex, Open Source Flash, Adobe Flex, Flex 2, Flex 3

See Flex in Action

Check out how large companies like HP, eBay and SalesForce, as well as smaller start-ups like Viddler, Picnik and others use Flex in the Flex Showcase.

Download Flex

Download the free Flex SDK to build and debug Flex apps.

Flex Builder provides a rich set of tools to speed app creation. Try Flex Builder free for 60 days.

Join The Community

Get involved in the Flex community through user groups, mailing lists, open source projects, forums and more.

Get Help

The complete set of documentation is available, along with quickstarts and Flex and ActionScript books.

Flex 3.0 Free For Education

Students and faculty can get Flex Builder 3.0 Professional for free.

Flex 3.0 and Adobe AIR 1.0 Now Available!

Adobe released Flex 3 and Adobe AIR 1.0 on Monday, February 25th. Buy Flex Builder 3 Standard from $249 US or download a 60 day trial version.

Flex Live Events

Learn Flex and meet the Flex team at the following conferences:
360 Flex Milan, Italy - Apr 7 - 9
Webmaniacs - May 19 - 23
JavaOne - May 6 - 9

What is Flex?

Flex is a framework that helps you build dynamic, interactive rich Internet applications. Flex applications are delivered on the web via the Flash Player or to the desktop via Adobe AIR. You can build applications using the free Flex SDK or Flex Builder, an Eclipse based IDE.

Check out Flex for ColdFusion developers.

Check out Flex for Java developers.

Check out Flex for .NET developers.

Check out Flex for PHP developers.