Adobe® Flash® Builder™ 4 (formerly Adobe Flex® Builder™) software is designed to help software developers rapidly develop cross-platform rich Internet applications (RIAs) and content using the open source Flex framework. It includes support for intelligent coding, debugging, and visual design and features powerful testing tools that speed up development and lead to higher performing applications.
Installation:
Installation files for Adobe Flash Builder 4, for Windows and Mac OS X. I have included a keygen that my friend uses for installing CS5 Master Collection, it does have FB 4 in the list though.



DOWNLOAD:
http://www.filesonic.com/file/433467361/Adobe.Flash.Builder.4.PC.and.Mac.part1.rar
http://www.filesonic.com/file/433467371/Adobe.Flash.Builder.4.PC.and.Mac.part2.rar
http://www.filesonic.com/file/433467381/Adobe.Flash.Builder.4.PC.and.Mac.part3.rar
http://www.filesonic.com/file/433467391/Adobe.Flash.Builder.4.PC.and.Mac.part4.rar