Is a very good extension with group tabs works excellent. Will have my 5 stars when you can add more features to each container like a personal search engine, maybe vpn defaults, proxy defaults, extensions, ... then you can really really switch between environments. But is pointing in the right direction. Has some speed or functional bugs sometimes, but is really really good.

The latest update ask for permission of 'Exchange messages with programs other than Firefox' and 'Control browser proxy settings', which is ridiculous for people who do not use Mozilla VPN.
It should only be an optional permission!

Cooles Addon! Vorallem wenn man Private und Arbeitstabs hat und diese trennen möchte.

One of the most useful extensions I currently use. I do wish they would add tab stacking and tab previews, but all the same, 5 stars.

Finally, an easy way to have multiple logins into Office online on different domains!

And a complete separation between your private and tracked life!

The only thing that is missing, is the option to manually add a URL via copy & paste. Many services quickly redirect you after they find out that you are not logged in, and it can be tricky to catch them at the exact right time.

The "Always open this site in" feature is not matching all URLs correctly. Consider the following URL: https://promo.linode.com/linuxexperiment/?utm_source=youtube&utm_medium=influencer&utm_campaign=influencer-youtube-linuxexperiment&utm_content=video&utm_term=LINUXEXP19

which gets matched as my youtube container.

Excellente, made my life easier with multiple e-Mails and different projects open at the same time. Congratulations to Mozilla Firefox team again!

Is it possible to assign site into a container, while keeping current session cookie?

Now you need to re-login (once) inside the container, which is.. only mildly inconvenient 😅

I like the extension, but the user interface is insanely unintuitive and there are no instructions in the add-on's page. So you will have to spend a lot of time to figure out how to use this add-on. You can find some documentation by googling and some third party reviews that give even more insights on the benefits and use cases for this. I don't know why Mozilla makes it so difficult to get started with this add-on by not connecting it with meaningful documentation.

I'm A SERIOUS Multi-Tasker! FF Containers Allow Me To Work On Multiple Projects ALL @1 Time...Without Having To Log Out Of 1 eMail Just So I Can Open Another 4 Example, Just Open A New Container & Voila! Unlike Some Other Browsers - When U Open A New Container ALL The Add-Ons & Features Stay In Tact...No Multiple SetUps For Each New Account. There Are Add-On Containers To Secure Things Like Facebook Container, Etc But I Find That FF Containers Fulfill My Needs & W/Other Security Features Already Built-In To FF As Well As Add-Ons, I Feel GOOD, YAH!