It's very useful to be able to keep my accounts separate, both from a business perspective (multiple google/microsoft accounts), as from a privacy perspective (all google or facebook tabs in their own containers). It may be a bit of a hassle to set up, especially since you have to set it up separately on each device. Once it's set up, it works really well, always opening websites in their assigned containers. I would like to see a sync feature, and the ability to reload the current tab in a different container.

Compartmentalization. Good Stuff

Allows me to separate work accounts from personal accounts or primary account from test account even on websited that do not support this natively. Super useful and works without issues for me.

Super extension, permet d'ouvrir plusieurs comptes différents dans différents onglets. Ca serait bien de pouvoir définir une URL à ouvrir automatiquement quand on ouvre un container

One Word - GREAT

It's great because it helps you know what tabs are you opening and don't forgot your self spending a lot of time on something useless

E

This is a must have extension for anyone who juggles both work and personal on a single computer. I install this extension first whenever I have a new install of Firefox

Great, only separate bookmark handling is missing ;)

One of the best futures that helps to avoid the need for multiple browsers.

does the job correctly. work and home tabs are kept separately. its still a work in progress (cannot open a bookmark directly in a container) but it does a great job in keep cookies apart.

Module très utile :
- simple d'utilisation
- multi-sessions pour les sites qui ne le supportent pas nativement
- limitation de l'efficacité du tracking
- développement web facilité

I love the idea of Firefox Multi-Account Containers, however, this add-on requires much improvement. First complaint: I created some custom containers, as opposed to personal or shopping, which have now vanished twice from existence. I use the Facebook and Google Container Add-ons [which work great!] in conjunction with this Add-on, but that shouldn't be a reason for losing my custom containers. The worst part of the vanishing act is that I have no idea why this is happening. My second complaint is that adding a URL to a container is too cumbersome. You should be able to right click on a bookmark and add it to a container, just like you can open it in a new tab, window or private window AND you shouldn't have to confirm that you want it opened in that container upon your second visit to that URL. As it stands now, first you must open a blank tab in your desired container, then click your bookmark or enter the URL, AND THEN CLICK A CHECK BOX ON THE CONTAINERS BUTTON TO ALWAYS OPEN IN THAT CONTAINER, AND++ upon your second visit to that site, you're forced to endure a needless delay screen where you must click the check box confirming your desire to always open that URL in the specified container. Fix these 2 problems and I'll give this add-on 5 stars, but you'll only get 2 from me today.

es genial, me ha servido de mucho :3

[es] Funciona muy bien y el concepto/idea es muy útil; usas un container para ver productos y eso impide que tu navegación en los otros se llenen de publicidad basura. Además puedes separar cuentas. En fin, contextualizas tu navegación. Sólo le falta un acceso rápido por teclado para abrir los contenedores.

[en] It works very well and the concept/idea is very useful; you use a container to view products and that prevents your navigation in the others from being filled with junk advertising. Plus you can separate accounts. Anyway, you contextualize your navigation. It only needs quick keyboard access to open the containers.

but there is a problem with "always open in ..." please give us an update.
when I have put the web page in some container and then add another web page in another container, the first page has become in the last container I choose.
note: the web page I mean is from the same website for example:
1) www.facebook.com/oyrwe
2) www.facebook.com/cvxvx
it also needs some grouping mechanizm

Its awesome