I deleted it because it didn't perform as desired.
① Cannot pre-isolate sites visited for the first time
② Requires combination with tools like “Temporary Containers” for pre-isolation
③ Using it with tools like “Temporary Containers” causes containers to multiply infinitely
④ To prevent infinite container growth, stop combining tools and modify “Temporary Containers” settings
⑤ Consequently, you end up operating solely with “Temporary Containers”.

Very useful. Globally works fine.

Muy funcional y util

Fantastic. When you manage multiple O365 it makes all the difference. I REALLY REALLY wish they had a sort feature for the containers and/or a way to nest them in a folder-like structure. When I move to a new PC, all my containers are out of order. I just want a single click alphabetize.

This should be on firefox in the default installation

Не показано что этот сервис работает не для все стран!!! Для россии его нет например !

Es una herramienta muy práctica. Quizá no es tan intuitiva la forma en que contiene algunas direcciones a un perfil, pero nada complejo de entender. Hasta el momento no he encontrado algún problema.

Esta función es lo mejor que tiene Firefox y por la que sigo usando el navegador, totalmente perfecta y util

so good. no need for more profiles. just make a new container and there you go

Best extension, just use this extension with an adblock and you won't need anything else!

This has a lot of potential, but it's not quite ready for prime time. There's a few specific problems here:

Firstly, add-ons can't communicate with the content of containers. This breaks functionality in most add-ons in really weird and unexpected ways. It'd be nice if we could whitelist add-ons to have access to relevant containers, but most users would probably want all of their add-ons to have full access to all of their containers by default and wouldn't expect them to be functionally blocked as they are.

Secondly, containers don't nicely handle redirects. A lot of sites, especially corporate ones, will redirect through several different domains and subdomains when performing the login process. Containers set to "Limit to Designated Sites" won't operate correctly with these redirects as the redirect pages are not true web pages and don't allow you to sit on them long enough to click the address bar button to always open them in the specified container. This cannot currently be remedied by having foreknowledge of the complete list of redirect sites, as the "Limit to Designated Sites" list cannot be manually edited or appended outside of the limited address bar button method.

Thirdly, The VPN integration isn't particularly secure in premise. Being a per-container opt-in means that entities snooping on the line will immediately see that there's something suspiciously different in the data packets coming from your protected containers compared to the rest of your typical https encrypted traffic. This makes isolating these packets, on the fly, infuriatingly trivial. Making this a per-container opt-out would all but eliminate this problem, as attackers would have to have foreknowledge of the originating container to do this effectively in all circumstances. It'd also be great to see connection protocol options ( OpenVPN, WireGuard, etc. ) as well as other VPN provider options as that'd make it that much harder to try and figure out what's going on in the encrypted container traffic and would better protect Mozilla VPN itself. Right now it's technically more secure to not use the VPN feature at all.

I think the basic idea here is really excellent, but these problems really do drag it down. Something made and maintained by Mozilla shouldn't have this many problems. I still think this is potentially useful to certain technical professionals trying to isolate their sensitive internal sites from other web apps, but the average user is going to have too many headaches to be able to use this effectively.

If you know what you're doing, keep the above points in-mind and go ahead and give it a try.

Anyone else? Hope Mozilla addresses some of these issues in a future release. I'll update my review if they do.

Needs to merge the "Containarise" and "Container proxy" add-ons features to become perfect.

https://addons.mozilla.org/en-US/firefox/addon/containerise/
https://addons.mozilla.org/en-US/firefox/addon/container-proxy