Mozilla Releases Special Editition Firefox For Developers With Built-In Debugging Tools | HotHardware
Firefox Developer Edition. Developer Tools. Console. Can't get the command line prompt up, to test Javascript | Firefox Support Forum | Mozilla Support
Firefox Developer Edition
Use Mozilla Firefox DevTools in Chrome
Firefox DevTools User Docs — Firefox Source Docs documentation
Developer Edition Devtools Update: Now with Photon UI - Mozilla Hacks - the Web developer blog
Open the Inspector — Firefox Source Docs documentation