I've been using the tests version of this for some time now. It's great. Keeping work/personal sessions from mixing is really useful (eg: I want my work google

I've been using the tests version of this for some time now. It's great. Keeping work/personal sessions from mixing is really useful (eg: I want my work google account whenever I visit gmail, but my personal one for youtube). You can also set certain domains to open on certain containers by default. It's available here for now, but I really hope this ends up making it into firefox itself: https://addons.mozilla.org/en-GB/firefox/addon/multi-account-containers/ https://addons.mozilla.org/en-GB/firefox/addon/multi-account...