Efficient, easy to understand interface and colourful outlines on tabs to visually represent what Container they are in.
5/5

One of the most useful extensions I have ever used. This could even be included by default in Firefox, since it the best way to manage different sessions efficiently.

The most useful extension never invented period !
Don't forget to activate the show in bookmark option which allow you to open the same bookmark with multiple sign-on.

Très bonne fonction pour séparer des contextes que je souhaite isoler les uns des autres. L'add-on n'est pas encore très intuitif, mais permet progressivement de programmer chaque site avec son contexte de destination.

That has been amazing as a both an individual and a family member! I have used previous solutions that never work quite as well as intended. Thank you as always Mozilla!!

Please add a way to re-order the list, & to stop adding the same old default categories to my current ones on new installs.

One of the most useful extensions I currently use. I do wish they would add tab stacking and tab previews, but all the same, 5 stars.

Finally, an easy way to have multiple logins into Office online on different domains!

And a complete separation between your private and tracked life!

The only thing that is missing, is the option to manually add a URL via copy & paste. Many services quickly redirect you after they find out that you are not logged in, and it can be tricky to catch them at the exact right time.