FlashFirebug

FlashFirebug (now Flash Debugger) 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.

Firefox Extension to debug any AS3 SWF on the web

FlashFirebug (now Flash Debugger) 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 on the active SWF.

 

FlashFirebug Features

View errors, warnings, policy and trace logs
View the SWF DisplayObjects inside the extension
Inspect inside SWF files like you inspect HTML
View and change object properties at run-time
View useful information about the selected object
Run your AS3 code inside any SWF at run-time
Performance Profiler
Free Transform, 3D Rotate, 3D Translate
Advanced settings for advanced Flash developers