FlashFirebug

FlashFirebug gives you the ability to debug any AS3 Flash on the web. Inspect the DisplayList, change properties on the fly and see the warnings, errors and traces directly in the extension. Use the inspector to hone in on elements, transform objects on the fly and use the console to run AS3 commands.

Explorer

This panel will display any SWFs or SPLs detected in a page and list them on the right. Expanding a SWF will begin analysing the SWF and display any assets found within. Just click on any item inside to see the details on the left pane. If the item is exportable a button will be displayed to export it. In addition, font glyphs are now displayed so you can identify fonts easily. Morph shapes now animate (if possible via SVG) to give you an idea of what it’s supposed to look like in action. The panel can also display any embedded sounds, and play WAV files from inside Firefox (Firefox doesn’t support playing MP3s).