Mozillian & Mozilla Reps (part of the Reps Council) & Mozilla TechSpeakers
Firebug > DevTools
Foxmarks > Bookmark Syncing
Faviconize Tab > Tab Pinning
Multizilla > Tab Browsing
Session Manager > Session Restore
Add-ons are important in Firefox
System addons and Test Pilot (http://testpilot.firefox.com).
DevTools can be developed today as an extension inside Firefox (and extended too).
Addons Marketplace or AMO
2017 Stats of Addons.Mozilla.org
roughly 50% of users have add-ons
19000 extension developers
12 million monthly users on AMO
Firefox still the most customizable browser (?)
Bye Bye XUL/XPCOM
Today WebExtensions 1.0
Stability because is a different API respect to XUL/XPCOM
Parity with Chrome Extensions API
On Windows the extension have their own process (from Firefox 56)
Multiprocess compatible out-the-box
Support for Firefox for Android
Chrome, Opera, Edge supported!
Firefox Test Pilot
Firefox 57 included
Containers is a feature that lets you separate your work, shopping or personal browsing without having to clear your history, log in and out, or use multiple browsers.
Container tabs are like normal tabs except the sites you visit will have access to a separate slice of the browser's storage. This means your site preferences, logged in sessions, and advertising tracking data won't carry over to the new container. Likewise, any browsing you do within the new container will not affect your logged in sessions, or tracking data of your other containers.
You can listen for clicks on the icon, or specify a popup that will open when the icon is clicked.