From your wording, I get the feeling that you think Mozilla creates all the add-ons, and that the people answering questions here are Mozilla employees. Both are incorrect. Anyone can create an add-on, and submit it to the add-ons website (or offer it on their own website), and the people answering questions here are fellow users like you. Mozilla is very much community-driven. I did some digging, and found out that this feature was implemented in Firefox, but disabled. The way it was being done was causing firewalls to block Firefox. You can re-enable it. # In the [[Awesome Bar - Find your bookmarks, history and tabs when you type in the address bar|Location bar]], type '''about:config''' and press '''Enter'''. The about:config "''This might void your warranty!''" warning page may appear. # Click '''I'll be careful, I promise!''', to continue to the about:config page. # Search for the preference '''browser.casting.enabled''' # Double-click on it to set the value to '''true''' You may need to restart Firefox.