As you might have heard already, Firebug has been discontinued as a separate Firefox add-on. Read more...
https://hacks.mozilla.org/2016/12/firebug-lives-on-in-firefox-devtools/ Jan Honza Odvarko -- You received this message because you are subscribed to the Google Groups "Firebug" group. To unsubscribe from this group and stop receiving emails from it, send an email to firebug+unsubscr...@googlegroups.com. To post to this group, send email to firebug@googlegroups.com. Visit this group at https://groups.google.com/group/firebug. To view this discussion on the web visit https://groups.google.com/d/msgid/firebug/a2d1837e-d249-4caf-9ace-ad8b9dbe3588%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.