AS2/AS3: ThunderBolt

In the spirit of not reinventing the wheel, I’ll just post what ThunderBolt is directly ripping the Google Code page:
ThunderBolt is a lightweight logger extension for ActionScript 2 and 3 applications using Firebug.
Basically, ThunderBolt is a way to trace stuff out to Firebug’s console (similar to FlashTracer). Pretty sweet!