Extremely useful! I highly recommend you see if you can fit containers into your workflow. After settings sites to open on a particular tab by default I have been able to secure, categorize and isolate my different browser use cases with minimal to no interaction. Thanks Mozilla!

me encanta.

A perfect feature for modern browsing.

Pro tip: If you click and hold on new tab +, you can select container.

This is the best feature of Firefox.

Very useful addon. It allows me to separate my work and personal accounts.

One feedback I have is to improve the visual indication for the container in the tab. Right now, it's a colored line below the tab title. However, this conflicts with the blue top border that Firefox adds to indicate the active tab. My brain always confuses the two.

I find multi-account containers very useful for working with multiple AWS accounts. The simple colour coding system works well.

It's a shame containers do not sync across devices -- I hope the developers consider adding this functionality.

This is a really excellent add-on. I like how you can set default containers for specific sites, so cookies from different big trackers dont follow you on every site you visit. Also useful if you want to log in with two different accounts. It would be nice if it was posible to set an entire domain to a specific container, eg. google, so you dont have to remember to set every google-site to a google container like i have done.

I like this "privacy friendly" extension because it keeps the cookies private within each opened container. You can open a new container in a new browser tab. So you can be logged on to your Google account and visit shopping sites in a separate container so Google cannot not peek into your shopping cookie history. The containers are easy recognizably since the browser tabs are marked with a configurable color per container.

it's perfect but please add a button to group the taps within it.

Containers offers a great way to keep tabs organized; separate different kinds of web activities; and quickly hide and restore who sets of tabs. One my new favorites.

Does what it needs to and managed to solve a stupid shortcoming of not being able to manage multiple accounts on Twitter for me. Yet another reason to use Firefox and some of Mozilla's wonderful extensions!

thanks ! great

Great add-on if you have a lot of accounts

This extension must have by default!
Great!

Most valuable add-on for my workflow to have it all in one browser and even window. Perfect for dealing with different environments like DEV, STAGING and PROD and multiple Accounts.