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

separa las sesiones de las webs en tematicas y olvidate de que te persigan anuncios de cosas que has tenido que ver por otros temas.

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.

I love this extension, but that the configs don't sync with my firefox account is a big problem.
Putting sites into appropriate containers is not trivial. Having to do this on every computer, or worse, losing your configs... is very discouraging.

The documentation encourages using it to manage multiple accounts on the same platform, however this usecase is not baked in. The default containers are not a bad suggestion. I used some of them. My custom containers centered around the third-party authentication and the specific account. So, I open youtube in a personal google account. I open google drive in a container for my work gsuite account.

Maybe some more guidance could be given on how to use containers. My big question is, does it make sense to separate websites that I authenticate with via twitter from websites I authenticate via facebook?

I think some built-in UX around organizing websites into containers based on specific authentication accounts could be a great feature.

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 best extension for Firefox. Not is perfect, but is excellent.

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!