Guys it is a bit frustrating to use at this time. Missing options:
-DONT ask for confirmation every time you open a container - just open them in default or enable option of choosing default container for new tabs.
-I would really prefer shared logins across all tabs. I just need to group them but it is a bit counter productive to login to 10 gmail accounts and then have to login to X different places again and again due to new group.

Enkelt att hålla isär skolarbete och personliga sökningar, allt i samma fönster och webbläsare, men med olika flikar. Funktionen att alltid öppna en viss sida i en specifik container är till stor hjälp, och det är enkelt att växla container för aktuell sida om så behövs.

Excelente! As sessões não se misturam!

Container tabs have truly revolutionized the way I interact with the web, I can't imagine living without the practicality and convenience they provide—one of the many reasons I use firefox.

Very usefull add-on! As a web developer sometimes I have to test things logged in with many users at the same time on different tabs, this allow me to do that in the same browser window, without the need of many browser profiles.

The containers extension is indispensable, hands down this is firefox's best feature and absolutely necessary working with multiple accounts and as a developer. Firefox has made many questionable decisions, such as the new low contrast UI, but this container support makes firefox the clear best browser for power users and the privacy aware.