This lets me compartmentalize my browsing. I can sandbox different domains so that data isn't shared between them. This feature should have been built into all browsers long ago. Given the currently weak state of online privacy, it's refreshing to use a browser and add-ons built by a company that cares. This add-on is simple to use, but I think it would be a little more intuitive if all actions were available through the drop-down accessed by clicking on the Multi-Account Containers icon. In any case, this will forever be a default add-on for me in all new Firefox installations.

Incredibly simple and powerful. I use containers to isolate google and facebook, and it was very easy to set up.

Simple and intuitive solution to sound data management. Yet again showing us how Mozilla is committed to data privacy and an internet based on the users as the customer, not the product. Thank you.

c'est cool

Outstanding extension - HIGHLY recommended. Isolate your browsing correctly and efficiently and enhance your capabilities of containerization. This is a must have app. They recently upgraded it to include preference sync!

So useful! You can use a keyboard shortcut to open new container tabs with [ctrl] + [dot]

pretty useful

Using this is way better than using different browsers to keep your sessions separate. A must have for anyone who has to juggle between different accounts for a given web site or web app.

Suggestion: When we bookmark something that's in a container, it would be nice to get asked if we want the bookmarked URL to always be opened in a the same container. This way we don't have to always think of manually putting it in one.

Easy to get started, provides different containers by default but can be adjusted to personal needs.
The different containers allow to log in to the same webpage with different user-accounts.

Super cool add-on. Helps keep me organized.

This feature is THE reason I've switched back to Firefox after many years on Google Chrome. Extensions that leverage this feature to give you additional privacy (Google and Facebook isolation) is great. I even use an extension at work to open a new container and log me into multiple accounts without having to log out first.

I really hope this feature gets implemented in other browsers because it's as revolutionary as tabs or private browsing mode.

Installed it in order to keep two Google accounts open and ended up finding more and more uses for it. Incredibly easy to create new containers and manage multiple accounts.

Super useful!

I love this plug in. I use to open a local app in Firefox and then in IE so I would have different sessions. I also used Private browsing to do the same but it didn't keep cookies and settings from session to session. I use containers to contain those companies that have a network of different sites. For example a company like "MyBook" that also has a messaging site called "Mymessager" I can put both of those in one container, that way "MyBook" is not getting info from my web browsing, or purchasing habits.

This is an absolutely brilliant extension that might take a little bit of getting used to, but can be a real timesaver. Aside from keeping personal, work, banking and other things separate, it's perfect if you need to access multiple accounts on the same site, and without losing session data in private windows when they're closed.

Very handy plugin

Really useful addon, allows to have several sessions for one site/service.

Excellent!