Overall I think this is a great add-on. The one thing I wish it had was settings interface where you could manage what sites open in what tabs. If it had that this would be a 5.

Before having Multi-Account Container I was using different browsers to use my email accounts like gmail.com, hotmail.com & etc. and their respective depending social media network sites & business/work sites. Now, I say good bye to other browser.
Additional Features to be included:
1. Firefox Account Synced
2. In-built mail notifier for different containers

I'd give you the fifth star if containers could be synced between different computers.

Love it!

I like it

Очень полезная функция для одновременного использования сайтов под разными логинами! Сильно выручает, когда ты ведёшь сразу несколько проектов.

Works perfectly.
It allows me to work with multiple accounts from the same window, with a smooth workflow.

Después de largos años esperando a esta funcionalidad en algún navegador y sortear su falta usando varios navegadores o programas tipo Electron y similares... ¡Por fin! podemos tener varias identidades abiertas en un mismo navegador sin que se peguen entre ellas. ¡Aleluya!

Encapsulation for containers!

This is an awesome plug-in for developers or anyone that works on the same webapp with multiple user accounts.

As someone who is worried about websites spying on my activity, I love this add-on. It will be even more awesome if the ability to Sync the containers is added.

This is such an awesome feature. I don't know how I ever got along with it. It is great for keeping different aspects of your online lives separate.

Especially worth its weight in gold by allowing you to keep your online banking transactions completely separate from everything else for an added layer of security.

Very useful, nicely separates different web activities. Only missing is synchronization via Firefox account.

Спасибо! Очень полезное дополнение для браузера)

It's a very practical add-on. No complaints whatsoever. However, I'd like to have an option to sync settings across multiple devices. This is a huge deal-breaker.

It's very good but when i open a new tab from a site in a container I want to have the option to choose if the new tab will open on the same container or not. For example if i open a site from a youtube video description witch is on a container I want to have the option to open the site out of the container.

Would be 5 stars if it would sync settings between machines properly.

The greatest firefox add-on i ever installed. It helps me to move content from one account to another, to separate my identities (work, baking, personal).
It gives me a better sense of security.

This is like my most favorite Firefox addon in the whole wide world (next to an ad blocker like uBlock Origin). Save me the hassle of having to create separate Unix accounts to browse using other identities. My current wishlist for this addon: a keyboard shortcut to open a new tab using the same container as the currently opened tab.