I like it. Good for organisation

Saves my brain every day. Multi-Account Containers are genius and wonderful.

One of the best and most useful extensions for Firefox. A truly must for privacy and productivity. I hope it will come for Firefox mobile sometime.

Отличное дополнение. Very good!

When using the "limited to designated sites" setting you have to wait for every tab to time out before you can add it to the container.
Also the possibility to use wildcards in the URLs would be a minimum requirement to make it usable for a developer.