Firefox Quantum is officially out and it’s supposed to be twice as fast as the previous Firefox browser.
It features a customizable toolbar, night-mode and other features as free add-ons, such as Pocket Recommendations of what sites to browse. More importantly, though, it is even faster than Google Chrome and uses way less RAM, allowing you to open more tabs simultaneously.
Quantum was a group effort by over 700 authors contributing to the code. The open project took over a year and, ironically, Firefox still uses Google as default search engine, after having used Yahoo in the past for several years.