Adobe Flash Builder(or Flex Builder) offers many powerful features for enabling intelligent coding, interactive step-through debugging, and visual design of the user interface layout, appearance, and behavior of rich Internet applications (RIAs). But we need pay $699 for Flash Builder 4 Premium Edition or $249 for Flash Builder 4 Standard Edition. In fact, it is almost unnecessary for most beginners or the colony who only want to try. Don’t worry! This article presents 11 free development tools(compilers) which allow you needn’t to buy software from Adobe to create Flash content, and all of them are open source!

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