I know that FlashDevelop is not as feature-rich as FlexBuilder but hey it's free and a great IDE for smaller AS3 projects. For those of you familiar with FlashDevelop, here's good news: You can now export SWC files in FD.
A developer from Sydney published a plugin for FD. The plugin is available here: http://www.flashdevelop.org/community/viewtopic.php?t=2987 I put together a tutorial on how to use the plugin and SWC files in FlashDevelop: http://blog.log2e.com/2008/05/07/creating-a-swc-component-in-flashdevelop/
