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).

Should be a default feature in the developer edition. Thanks for the great work!

A fantastic add-on that opened the door for many other privacy enhancing add-ons.

Very good extension for when you have multiple Microsoft accounts. One problem: everytime I sync my containers on a new device it adds the default containers, I have to remove them one at a time.
Ideally, it would be nice to delete the defaults when I sync; at least it would be nice to have the possibility to delete multiple containers at once.

Super module, mais je viens de rencontrer un problème sur eBay : je ne peux plus m'identifier sur leur site, et je tourne en boucle sur le hCaptcha. Solution : ne plus mettre eBay dans aucun des containers. Dommage.

Atende todas as minhas necessidades.

I have Mozilla VPN, I enabled Mozilla VPN, it keeps telling me to Get Mozilla VPN. Kinda annoying cause I'm trying to use Mozilla VPN.

This add-on works great: I can keep an extra container for google, amazon and netflix while browsing in a different container without these companies recognizing me!
To me, it is basically a better controllable version of private browsing.

The January Update broke proxy within the container and whilst Feb says it should be fixed, it doesn't work for me. Had to roll back to December (8.0.4) to get it working again