I tested this useful addon on Waterfox , but when i click on the icon i don't see the dropdown menu.
(i read somewhere it's by design but by design of what???)
Edit:
With the help of:
https://www.reddit.com/r/waterfox/comments/bkt2t2/multi_account_containers_borked/f0xriwz/ ,
I can see the menu...
Need time to test now!

Excellent Add-on,

I used this extension a few days ago and it has been a great benefit for me to protect my information from facebook and it's related services. Which helps me now to securely use the internet without giving them unauthorized access to my interests and other private data. Huge thanks to you guys at Mozilla for making this happen.

Really gives me the warm and fuzzies! Seems to be having an effect, too.

A must for every firefox browser

Normally I don't log-in to post comments or reviews since I fear tracking cookies and it's too inconvenient to open a private browsing window just to post my opinion. This add-on has changed everything.

It's been a real pain managing multiple accounts using a combination of private browsing and different browsers. There are very few features in any application that increase both convenience and security/privacy. This add-on is one of those features. Things like this are the reason I still prefer Firefox over other browsers.

I'm giving this add-on five stars even though I think Multi-Account containers is a rather dry name. Wouldn't Personas have sounded cooler?

This should be included in the browser, but I understand if they want to keep it an addon. This is perfect for developers who want to test with multiple simultaneous logons. It's perfect for anyone trying to keep their various online lives separate (e.g. work vs personal). And it's perfect for trying to get out of filter bubbles.

This feature is really amazing. This is something what was missing all the time. I mean I am really enjoying in a little bit more privacy about who is looking into my cookies. Thanks for developing this amazing addon. Keep it up!

I find container tabs to be absolutely essential for browsing the modern web. It's possible to have multiple Google Account environments (home + work). The Temporary Container extension augments this usefulness too! Tracking and fingerprinting are so widespread now that separating session environments seems like the best way to go.

I feel a lot more relaxed about using google products now. Have used this to separate google, facebook, amazon, and reddit. By the looks of the er comments, lot of them have been addressed!! Thanks a lot.

I think this is ideal to solve many multi accounts and privacy problems. . Thanks!

very helpful

It is better if we can sort container by icon/color or Place some container in a bigger group

Hello,
This is an super add on! Thank you!
It would also be good to have an option to open a new tab within a nev container. After closing the tab nothing is stored, what do you think?
Kind regards from Austria!
John

But the customization is a little bit stupid.
Hard to use without shortcut.

This is what made me go back to firefox
No problems so far

Between this and Little Snitch, I feel as though I've really got a hold on my browsing. Easy to use and works like a charm.