http://blog.mozilla.com/devtools/2011/05/25/the-relationship-between-firebug-and-mozilla-developer-tools/ http://blog.mozilla.com/devtools/2011/05/25/the-relati

http://blog.mozilla.com/devtools/2011/05/25/the-relationship-between-firebug-and-mozilla-developer-tools/ http://blog.mozilla.com/devtools/2011/05/25/the-relationship... tldr; no. Firebug is an independent (but with Mozilla's support and blessing) project and we're also building some great tools that will ship with the browser.