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Firebug
Pyrrhocoris apterus - Wikipedia
GitHub - firebug/firebug: Web Development Evolved - The Firebug …
Firebug (software) - Wikipedia
How to Install and Use FireBug and FirePath in FireFox
Saying Goodbye to Firebug - Mozilla Hacks – the Web developer …
Firefox Developer Edition - Mozilla
Firebug Guide for Web Designers - WebFX
GoogleChromeLabs/ProjectVisBug: FireBug for designers - GitHub
Releases · firebug/firebug.next · GitHub