GENIUS!!!
I've been looking for this a long long time ago!

and beautifully

I like the ability to isolate different types of browsing in separate containers.
I would like to be able to move a tab from the default container to a specific one. This would simplify registering a site with a container.
I would like to be able to select custom icons and colors for my containers.

very nice

Awesome add-on. Pretty easy to configure and I really like that websites can be set to open by default in a specific container. What would really make it a 5-star add-on for me, would be built-in automatic sync for settings across devices for the Firefox account.

Putting webpages in their own group containers makes finding information so quick and easy!

Pretty good extension, but doesn't work with all websites.

I always have to re-login into Twitter when I closed FF and WhatsApp is always opened in the default container.

Отличное приложение. Еще бы возможность чистить куки внутри одного контейнера.
Please add cookies clearing for each Container individually

Used to play around with Chrome profiles, but this simplifies things so much.

Addon So great!

Really good concept, I miss 2 things

Sync with my Mozilla account so I dont have to set it up on each device (Disable and reenable also seems to wipe settings)
Ability to like the Facebook container, leave the facebook container if I go to another site that is not in that containers rule

Very useful

There should be an option to open external links in the default container without having to right-click + sub-menu

Good for containing tracking sites, as well as for logging in with multiple accounts on the same domain within separate tabs of the same browser window.

This helps incredibly with keeping my work and personal accounts separate so I don't have to sign in and out constantly or use different browsers.

they changed it so that facebook automatically opens up in a designated facebook container & i can no longer use the addon to be logged into two facebook accounts. it seems there's no way to bypass this

Love the functionality- being able to separate different sites into different containers is a great security and privacy feature.

It works great!

Protip: you usually want to middle-click the new tab "+" button. Left-clicking it will use your default container. Middle-clicking it will open a new tab in the same container as your current tab.

Awesome!

It's great to have multiple cookie sessions so neatly integrated into the browser. One identity per color makes it easy to identify the container for each tab. Highly recommended.