Flex Builder 3 正式版
下载地址一：
​​​http://download.macromedia.com/pub/flex/flex_builder/FB3_win.exe ​​​大小： 424 MB ；未进行压缩的 Flex Builder 3 安装文件
不用注册登录，可以直接下载。
Flex builder 3.0注册码（已经试过的，可用的）：

1377-4168-2018-0771-2432-1495

1377-4760-3354-0772-2773-8996

1377-4165-2080-7265-7813-8901

1377-4964-5021-8182-2399-8235

Flex builder 中要进行调试，就必须安装含debug的flash player版本。下载链接地址：

Adobe Flash Player 9 — Debugger Versions (aka debug players or content debuggers) for Flex and Flash Developers

12/3/2007 Updated debugger versions of Flash Player 9 (aka debug players or content debuggers) are available for Flex Builder 2 users and Flash CS3 Professional users. These new players are version 9.0.r115.

Download the Windows Flash Player 9 ActiveX control content debugger (for IE) (EXE, 1.59 MB)

Download the Windows Flash Player 9 Plugin content debugger (for Netscape-compatible browsers) (EXE, 1.56 MB)

Download the Windows Flash Player 9 Projector content debugger (EXE, 3.69 MB)

Download the Macintosh Flash Player 9 Plugin content debugger (Intel-based Macs) (DMG, 5.35 MB)

Download the Macintosh Flash Player 9 Plugin content debugger (PowerPC-based Macs) (DMG, 2.41 MB)

Download the Macintosh Flash Player 9 Projector content debugger (ZIP, 4.81 MB)

12/3/2007 Updated Linux debugger versions (aka debug players or content debuggers) of Flash Player 9 are now available. Additionally, the Linux standalone player (projector) is available for developers who wish to publish projectors on Linux operating systems.

Download the Linux debugger and standalone players (TAR