This one literally makes my life easier!!!
Thank you so much.

this one is much better and safer than sessionbox.

besides it's also very good-looking.

This is really a game-changer. I love to separate personal and professional acounts/lives.

A necessity in the age of surveillance capitalism. It allow me to be login into gmail or youtube in one tab and search google anonymously in another one.

easy to use!

One of main reasons Firefox is preferred over all alternatives.

Best extension for privacy ever!
It makes possible to have several identities/account on the same platform.
Also, you can containerize websites which try to connect everything you do.
I wish it was available for Android too, but I understand it would require special UI and need more computing resources.

[to all the people finding it useful but complaining of minor missing features and giving few stars: it's not nice!]

Essencial. Essa extensão auxilia muito na privacidade. Abrir cada tema num container é imprescindível para uma navegação efetivamente privativa. Recomendo.

神了，超好用

Very useful to use several accounts of the same service. Also, to reduce unsolicited tracking.

One of the most useful extension I've ever used.

I LOVE this extension. I work at job that has me doing a lot of stuff and being able to separate my work web life from my personal web life is AMAZING! I can be logged into two CMS systems and never have to log out because of containers. It's glorious.

The add-on works well in the background and just shows a decent notification to check the visited website is opened inside the specified container. Good idea - great implementation!

Great functionality, avoids the need for having two browsers open for personal stuff, work, banking, shopping etc. The only missing thing is easy hotkey press defined by the user or something like CMD/CTRL+SHIFT+1 to open a tab in the container defined first.

suggestions:
1- organizing the containers in folders and sub-folders structure: I don't use it as much because I manage many accounts, and it would be nice to have the option to create folders. For example: you would have a folder called "Others accounts" and in it there is two folders "Managed businesses" and "family." Inside "Managed businesses" folder you would have business1, business2 etc.

2- adding description to containers and viewing them when hovering over them

3- have more custom control on colors and icons of containers, let the community make icons which could be added within the add-on

4- domain specific containers, example FACEBOOK.com

5- having two check marks; ☑ Always open this website/URL (Facebook.com) with this container (My Facebook) ☑ Except when I am in a different container.

Meaning if you made a container for a family member Gmail, Facebook, or their Other accounts; For example your mother, father, or technologically illiterate girlfriend accounts then you would be able to protect your privacy on ANY site not just Facebook, and manage other people or your other accounts.


Edit:

6- when long pressed the search bar or the arrow key in the Address bar button you can search or navigate to a site with a specific container