The Flex SDK was open sourced as of version 3.
Version | Last Milestone or Stable Release (download)
Flex 4.6 | November 29, 2011
Flex 4.5.1 | June 19, 2011
Flex 4.5 | May 2, 2011
Flex 4 | March 21, 2010
Flex 3 | December 11, 2009
Flex 4.6 is the next major step in cross-platform mobile application development and offers several new components and functionality specifically designed to help developers create applications for the latest mobile and tablet devices.
The 3 primary themes of Flex's next release, code-named, Hero, are:
As of March 21, 2010, Flex 4 has been released. It is has 3 primary themes:
Flex 3 was initially released on February 25, 2008. It was focused in 4 areas:
Wiki: Download Flex 3
Wiki: Download Flex 4.5
Wiki: Download Flex 4.6
Wiki: Download Flex 4