It does the job and it does it well.
But an essential function is missing: the "create a new container" button in the "open the tab in a new c...." menu.

Buen complemento, aunque parece que una vez que se asocia un "contenedor" a una pagina no hay manera de quitarlo. (Porque no puedo abrir la misma pagina en diferentes contenedores o porque me pide siempre, que lo habrá con el mismo!)

The idea of multi-account containers is great and the context separation between containers works, so far, reliably.

However, two side issues turn out so cumbersome that the gain of clearity and ease this add-on could potentially enable is hardly effective in practice:

(1) If you deal with many dozen open tabs, you may frequently enploy the % shorthand in address bar to quickly find a particular tab. Alas, that shorthand doesn't work across containers, so it gets close to useless unless the searched-for tab resides in the same container with the current tab. In order to search for any other open tab, you (1a) first need to remember its context container, then (1b) find an arbitrary tab belonging to that container, then (1c) perform the tab search there.

(2) Even with the "sort tabs by container" menu item (which has to be invoked manually each time), the visual overview provided by the thin colour marks at tabs is limited. The UI would be much clearer if containers were, or optionally could be, assigned to browser windows, making all tabs in that container appear in the associated window and nowhere else.

This (2) would also help a lot in dealing with (1), as finding a tab belonging to a particular container (1b) would be as easy as finding the corresponding browser window. Given that you typically use much fewer browser windows than tabs, even (1a) is not a big deal anymore as you can perform the tab search once in every browser window (i. e. container).

No complaints but for the love of God. Can we please have this on android already!

*Edit

Changing my rating to 3 stars because containers constantly break the User-Agent Switcher and Manager addon. I really thought that issue would have been fixed by now.

Also fighting with this app at root domain level is a nightmare. Doesn't know the difference between Google account 1 and Google account 2.

Wish this worked consistently. Sometimes, just keeps opening tabs in the same container over and over again.

Super utile !
Par contre, ce serait utile de ne pas dépendre de l'appli VPN pour y accéder via les container. On est obligé d'activer l'appli, donc d'être sous VPN, mais certains sites les bloquent, donc on doit désactiver l'appli, et on perd le VPN sur tous les container pour au final un seul onglet !

Good extension, needs a lot of updates, unfortunately you're not updating much.

* Pallet of colors - rather than having only limited colors.
* Make some other extensions work with containers.
* Have exact links open in certain container - eg I want google sheet A to open in container A, but google sheet B to open in container B.
* Pick home page and extensions for each container

Not ready for prime time.

My biggest problem is the Fidelity web site. The URLs for the site take the form of .fidelity.com. I can't enter "fidelity.com" for a container and can't edit a site in the site list for a container.

This is a deal breaker. If I can't use this feature for a financial site where my need for security is greatest, then I'm not sure how it helps.

just one 24h with the extension, but fount it to be a good concept for a flowing the browsing experience. happy with it so far.

Great idea in principle. But it is extremely annoying that it deletes configured containers so often. Notably - it does this if you disable and re-enable the extension. With no warning! It's a cardinal rule not to delete user data without at least one layer of warning.

Can't sign in using FB oauth on other sites when inside container

It broke some of the websites I have been using. Firefox, at least you tried.

The doc on GitHub says it works on FF 57+ but it actually it refuses to install on ESR that is v. 78 asking to upgrade the browser. Wrong documentation or what? It works on Dev edition (same Debian Buster computer).

if the number of containers is very large, it will be very difficult to organize, there is no option to add folders or sort names. and if this feature request has been added, I will add a rating for this amazing addon 😊 thanks.

Guys it is a bit frustrating to use at this time. Missing options:
-DONT ask for confirmation every time you open a container - just open them in default or enable option of choosing default container for new tabs.
-I would really prefer shared logins across all tabs. I just need to group them but it is a bit counter productive to login to 10 gmail accounts and then have to login to X different places again and again due to new group.

Great extension - apart from the 'always open this in a container' feature. Easy to mistake the icon in the address bar for the main one to open a new tab - end up setting default containers and spending forever trying to work out how to remove them. Would be a five star review if this were fixed.

Used to work, but now it keeps popping up a page asking if I want to Always Open in Assigned Container and there's no way to just reset it to default. I tried deleting the extension and reinstalling it, and now the option to create a new named container is gone! Very buggy.

Speaking of bugs, the context menu sometimes isn't there and the menu that is there (next to the URL field) locks you into the "Always Open in This Container" problem. I wish that icon wasn't there at all since this is a shared computer and the other people are likely to click on it to try to change which container they are in.

Richtig scheiße, denn das fördert Clutter und Chaos bei (zu) vielen Tabs und Fenstern:
Nach Auswahl bei einem Tab von „Always open this site in …“* öffnet sich
1. ohne Warnung/Hinweis
• ein (anscheinend) Klon des Tabs**, und zwar
• dort, wo gerade Aktivität war, also schlimmstenfalls, wo er im Leben nicht hingehört.
Das könnte ich noch verschmerzen, auch wenn es nervt. Aber
2. — wieder ohne Warnung/Hinweis! —
• es öffnen sich (alle? zumindest sehr, sehr viele) weitere(n) Inzidienzien dieses Tabs; in meinem Falle waren es zuerst hunderte, weil ich zuerst die dringendste Herausforderung an Privatheit angehen wollte.
Übrigens zunächst mit der (dann ziemlich) dussligen Warnung unter dem Titel “Multi-Account Containers Confirm Navigation”* mit dem Inhalt “Open this site in your assigned container? You asked Firefox to always open CarmaChamleon for this site: (…URL…) Would you still like to open in this current container?
[ ] Remember my decision for this site
[Open in Current Container] [Open in CarmaChamleon]”*.
Und dann noch einer… noch einer… noch… noch…noch… und nochundnochundnochundnochundnoch — und… so weiter.

Das erinnert mich an Windows-Installation im Vergleich zu Mac (früher jedenfalls): Windows fragt jeweils zu verschiedenen Zeitpunkten Dinge ab, statt diese vorab in einem Rutsch zu klären…

Suggestions to the developers:
Please consider those people who — like me — are “tab hoarders”.
—> warn that possibly hundreds of tabs will open when making that choice (at least once, with remember of course), or better
—> find another way of dealing with that situation:
• open in place, why not the same tab anyway? At least in the same window!!! — I (try to) put order into the placing of tabs in different windows, so don't mess with that, please…
• and… well no “and”, that would heal the problem of cluttery and confusion.

In the meantime, address us “tab hoarders” at least by putting up a warning on first usage, better yet a set of instructions — maybe there's a better way to set it up without annoyance and confusion?
Bear in mind, we might have fairly slow computers still in use, so when testing, consider that as well…

Thank you.

And, another thing:
translation.
With German, I offer help. My English is, hm, okay; my German is excellent, I love to use precise expressions that are still easy to understand.

* Übersetzung?!?!? — Deutsch ist nun nicht eine Sprache, die bloß von 20 versprengten Individuen in weit verstreuten Hütten in der Tundra oder dem Regenwald gesprochen wird…!
Ich würde auch dabei helfen, da ich auch Englisch recht gut beherrsche.

I like it and I find it useful. A better interface should be provided in order to make it easier to manage websites. If the URL is too long the deletion icon is not visible/selectable. Also it's not possible to manually add a domain or use wildcards.

Great extension, but you should be able to type sites into the control lists. So if I typed *.google.com then all google subdomains opened in that container.

I really like this addon. But its horible to manage the new tab menu container. I orded them but they are still showing random. Very annoying.