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A very useful extension.

I never knew I needed this until I used it. This is by far the most important (and practical) extension I have come across, especially if you have separate email accounts for work/home/etc.

Finally I can use multiple accounts instead of openning incognito mode or using other browsers.

Sadly, it still does not support right-click from bookmarks bar.

Easy way to sandbox different accounts. The ability to keep personal, work and other sites separate from each-other is awesome.

super pratique!

Now Office 365 using multiple accounts is not painful to manage on a daily basis.

Best thing to happen to Firefox since the Private Tabs addon doesn't work anymore! It's a bit complicated to make the addon learn the domain rules. But it works. Combine it with the addon Cookie AutoDelete! That basically gives you private tabs instead of having to open private windows.

Great extension!

It's so good, it's literally one of the biggest reasons why I use Firefox over Chrome.

Very useful

This addon is fantastic at what it does, however it has a fatal flaw... If you open up Firefox Nightly it's disabled and that's fine. When you go back to Firefox, all your containers are reset having the wrong names, colors, icons and and often a loss of data for some of the containers. It's really frustrating and I literally have to back up my profile every time I open nightly and restore it after finishing just to prevent this problem. PLEASE FIX THIS!!!!

I also have a suggestion to have a way to manage/review the data for each container. Possibly let us have history management for individual containers?? Especially options of whether to merge pages browsed with trunk history all the time as it is now, to have a separate history, or to not save history for each tab. It would be really fantastic to even be able to import/export the profile data for a container and choose which ones to include with Firefox Sync!!

very good

Traz muita praticidade ao cotidiano!

This is nice. It's very intuitive and easy to set up again even when your entire configuration is lost.

So easy to use! Easy to keep common items together.

Nützlich für mehr Übersicht
Seit ich die Container habe, hilft mir die Farbkennung, den Überblick zu behalten. Das ist wirklich praktisch. Die Installation geht leicht von der Hand, die Nutzung ist fast selbsterklärend. Ich differenziere die Farben nach Anwendungsbereichen und Kunden. Ich hätte mir da mehr Farbauswahl gewünscht - auch deshalb nur vier Sterne, denn ideal wäre es, die CI-Farbe des Kunden verwenden zu können. Das klappt nicht immer. Kann ja noch kommen. Auch bei der Icon-Auswahl wäre etwas mehr Variabilität schön.
Extrem praktisch wird es, wenn man das erste Mal bestätigt hat, einenContainer öffnen zu wollen und das Häkchen bei "Merk dir das" gesetzt hat. Dann kommen keine lästigen Fragen mehr und Links werden im selben Container geöffnet.
Schnell erlernbar, großer Nutzen, wenn man ein visueller Mensch ist, unaufwendig im Handling - klasse.

You've already been hammered with the privacy benefits and yada yada.
So I'd like to outline another major benefit: being able to authenticate to the same service with two different set of credentials. (i.e. logging into the hosting provider with both my personal account and the company's)

At the time of writing this is not working with Sync and there is a lengthy discussion on Github about the challenges of that.
Why it would certainly be nice to synchronize it's still useful as it is.

I work as a web developer on the OutSystems platform and use FireFox all day long for testing, inspecting and debugging HTML, CSS and Javascript code. In my opinion is the best web browser out there :)
Until I knew the multi-account containers extension, I had to constantly login and logout while testing web apps under several profiles. Now, with this extension, I can be logged in under several usernames (each with its own session) on the same browser window and it has made my work soooo much easier!
Thank you very much for your fantastic work on this extension!!!

Indispensable dans un environnement multi-utilisateurs ou dans un contexte de test isolé.
Essential in a multi-users environment or in a isolated testing context.

Me parece una aplicación estupenda, al menos me da sensación de seguridad. Le quito una estrella porque tuve algunos problemas logeando en algunos sitios como Youtube, aunque parece que se han solucionado en esta versión.

Almost good..
1. Container info does not use firefox sync
2. Reopen in a different container should have an option to delete all cookies in current container.
3. Have an option to ask for which container before opening a new domain.
4. Should be integrated to core firefox rather than addon.