No more hassling with having multiple profiles opened at same time.

I just started using it and I find it very useful. I don't have to keep separating pages using the private window.
The colors and the ability to sort by container make it easy to navigate through the tabs.

Best Addon to only be logged in with Google on YouTube and Gmail

The only reason I still use Firefox is containers. A feature I've been wanting for a long time is being able to manually add domains and subdomains to a container. This would especially be useful for my Google container because of how much Google redirects you to several different domains and subdomains when logging in to their services. As an example, logging in to blogger.com redirects you first to accounts.blogger.com, then to accounts.google.com, then to myaccount.google.com. Many of these subdomains are impossible to add to "always open this site in..." because they immidiately redirects to a different domain. I have set my Google container to be limited to designated sites i.e. anything Google related, but because you can't manually add subdomains you pop in and out of this container in a loop making it impossible to login in if you don't disable "limit to designated sites".

Does what it says on the tin, great for administering multi tenant 365 customers.

An absolut must to enhance your privacy and minimize cross-website tracking.

My personal Firefox killer feature. Love it.

Essential for many of my workflows. Works very well.

This is an amazing extension for me since I need to log into my Google corporate account and my personal Google account, and I can have both of them open in the same browser in work and personal containers. Also, having different containers helps me manage web logins and autofills much more easily.

An absolute must if you login to various sites with different profiles.

It's wonderful!