Definitetly 5 stars for it!
Add 3 more functions, please:

1. Drag and Drop the containers in the containers list, to rearrange them as we like best!

2. The "+" (plus) button inside each container (to editing section) to be able to add the URL links directly in the container, with copy-paste, without needing to "open the URL in the container we want to be placed, etc." and gaining more time in this way, when we need to work with tens of pages!

3. More specific icons, for multiple scenaries, like: games, dating, socialize, etc.!

THANK YOU for this magnificent add-on!!!

Hi please make this work in privat browsing too

great idea.
will be great if you can configure the containers and add and edit patterns for sites automatically open in the groups (general configuration for containers)

another improvement will be to add a private container.
open some files in this container and clear after close.

Great, how about subdomain attachment? We have site d3.ru, which have undefined subdomains, as gif.d3.ru, mascotte.d3.ru. Each of it - standalone feed with global authorization. Now I add each of it to container. Need assignment editor and wildcard support!

Fonctionne très bien.
Pas d'enregistrement / restauration des paramètres pour passer à un autre ordi ou si restauration de Firefox.

Great concept, and works perfectly. Only feature I would like to see added is the ability to prevent non-whitelisted websites from opening in certain containers (e.g. to add protection for the Banking container), similar to the way Facebook Container does.

Terrific add-on, lets me log into multiple accounts and keep several identities on websites, would love if it came with every installation of Firefox as its just that useful. Only needs a option to clear data/cookies for each instance.