He is using a fork of old FF which is able to run most of the good extensions which won't work with current FF. And have no equivalent there. Something like Tab

He is using a fork of old FF which is able to run most of the good extensions which won't work with current FF. And have no equivalent there. Something like Tabmix+ comes to mind, and/or vertical tabs, several forks of Scratchbook+ also. Maybe combined with a theme like Witehart with FF you could have a very relaxed browsing experience. That is all gone, FF has been dumbed down, and Chrome(ium) even more so.