It's a very useful add-on to privacy. Thank you very much for the development team.

I really like this feature; and a big reason I'm using Firefox as my default browser now.
Although one thing that I've noticed is that [in every device that I use Firefox browser on] I have to create all the containers over again--This is with signing in to Firefox browser and syncing... (Maybe it's a Bug that needs squishing...)
I'd definitely recommend this add-on feature to anyone who is concerned about their online privacy and to help avoid all of those malicious trackers and browser finger-printers that are seemingly everywhere on the internet these days. 5/5
Thank-you Firefox Team!! :)

mandatory feature, which is working in firefox. thanks guys

Really a life saver feature from Firefox. Now I can use multiple accounts from one service provider without logging out. Really good.

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.

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.