This addon is really interesting and could probably be considered as a native feature in the future.
Nevertheless, potential users have to be aware that there are some known incompatibility issues at this time, such as the recurring login request when using Pocket (that can be solved by opening the submenu “Firefox Multi-Account Containers” and unchecking the submenu item “Always open in this container”).

What unholy alliance has Mozilla/Firefox entered into that they do not have a Android version?
When they do provide a Android my rating will go to 5. Come on Mozilla, I have 2 two Shiney Gold Stars for you.....

Excellent extension. Became a vital component of my workflow. I debug applications with different accounts, I can access same service with different identities. Extremely grateful.

Meistgenutzes Add-on. Für Multi-Accounting unabdingbar und erzeugt Aufmerksamkeit bei Chorme Nutzern, die so etwas anscheinend nicht haben, zumindest nicht kennen.

Hands down one of the most useful Firefox Add-ons the the Firefox universe!

Es el mejor Add-On para gestionar varias cuentas de usuario en el mismo navegador. Ahorra tiempo, es seguro y sencillo.

The single most useful extension in existence. It's a must have.

Great plugin, use it all the time, but has developed a nasty habbit of NOT remembering my choices about "always open in xx tab".

This add-on is very useful! I would just like to suggest that the container button be implemented replacing the new tab (plus button) making it easier for users to choose the container type of the new tab.

Intuitive, straightforward and very effective. Using the containers is an easy safety habit to build. Great add-on.

The latest version (8.0.7) is even worse than last time I tested this extension: still no wildcards support, horrible performance, and ads for Mozilla VPN: one at install, another one after opening the popup, and yet another one when managing a container...