Flex 3 SDK Downloads

Look here for a description regarding the types of SDKs available.

Look here for an explanation of the different build types found on this page.

Look here for an explanation of how to use a stable or nightly build in Flex Builder.

Please refer to this document if you wish to target the Flash Player 10.

Latest Milestone Release Builds

Milestone Build Build Date Adobe Flex SDK Open Source Flex SDK Adobe Add-ons
3.5a 3.5.0.12683 Tue Feb 2, 2010 Download (ZIP, 122MB) Download (ZIP, 26MB) Download (ZIP, 65MB)
3.4 3.4.0.9271 Tue Aug 18, 2009 Download (ZIP, 122MB) Download (ZIP, 26MB) Download (ZIP, 65MB)
3.3 3.3.0.4852 Thu Feb 5, 2009 Download (ZIP, 121MB) Download (ZIP, 24MB) Download (ZIP, 63MB)
3.2 3.2.0.3958 Wed Oct 29, 2008 Download (ZIP, 118MB) Download (ZIP, 24MB) Download (ZIP, 63MB)
3.1 3.1.0.2710 Fri Aug 15, 2008 Download (ZIP, 82MB) Download (ZIP, 23MB) Download (ZIP, 59MB)
3.0 3.0.0.477 Tue Feb 12, 2008 Download (ZIP, 79MB) Download (ZIP, 23MB) Download (ZIP, 57MB)

Stable Builds

Build Build Date Adobe Flex SDK Open Source Flex SDK Adobe Add-ons
3.4.1.10084 Fri Sep 18, 2009 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)
3.4.0.6955 Sat May 16, 2009 Download (ZIP, 118MB) Download (ZIP, 25MB) Download (ZIP, 63MB)
3.3.0.4589 Mon Jan 19, 2009 Download (ZIP, 118MB) Download (ZIP, 22MB) Download (ZIP, 63MB)
3.2.0.3794 Thu Oct 23, 2008 Download (ZIP, 117MB) Download (ZIP, 24MB) Download (ZIP, 63MB)
3.0.3.2490 Tue Jul 15, 2008 Download (ZIP, 110MB) Download (ZIP, 23MB) Download (ZIP, 58MB)
3.0.2.2113 Tue Jun 17, 2008 Download (ZIP, 97MB) Download (ZIP, 23MB) Download (ZIP, 58MB)
3.0.1.1732 Fri May 16, 2008 Download (ZIP, 77MB) Download (ZIP, 22MB) Download (ZIP, 55MB)
3.0.1.1092 Fri Apr 04, 2008 Download (ZIP, 77MB) Download (ZIP, 22MB) Download (ZIP, 55MB)

Nightly Builds

Build Changes Build Date Adobe Flex SDK Open Source Flex SDK Adobe Add-ons
3.6.0.13443 view Wed Jan 13, 2010 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)
3.6.0.13426 view Tue Jan 12, 2010 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)
3.6.0.13384 view Sat Jan 09, 2010 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)
3.6.0.13349 view Fri Jan 08, 2010 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)
3.6.0.13285 view Wed Jan 06, 2010 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)
3.6.0.13209 view Thu Dec 24, 2009 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)
3.6.0.13120 view Wed Dec 23, 2009 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)
3.6.0.13014 view Thu Dec 17, 2009 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)
3.6.0.12961 view Wed Dec 16, 2009 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)
3.6.0.12941 view Tue Dec 15, 2009 Download (ZIP, 119MB) Download (ZIP, 25MB) Download (ZIP, 64MB)