I found this addon to be extremely useful to manage my online cookies. Perhaps it would be possible to make ctrl+t open new tabs in the same container that is currently active? I think it would reduce the mouse clicking a little.

Vraiment très bien et extrêmement efficace, le seul bémol à mon avis est de devoir pour chaque site de devoir cliquer sur l'icône et de demander l'ouverture futur dans ce même conteneur cela serait vraiment plus pratique si cela se faisait par défaut et d'avoir au contraire à cliquer sur l'icône pour éventuellement changer l'onglet de conteneur ou pour qu'il n'en utilise pas.
Sinon excellente extension !
Merci au dev's
EDIT: Il serait vraiment bien de pouvoir lancer un site qui a déjà un container d'assigné et de pouvoir le lancer SANS aucuns containers (problème d'accès à certains site ce qui oblige d'avoir un second navigateur ce qui est franchement embêtant)

Really very good and extremely effective, the only drawback in my opinion is that for each site to have to click on the icon and ask for the future opening in this same container it would be really more convenient if it was done by default and to have instead to click on the icon to eventually change the container tab or not to use one.
Otherwise excellent extension!
Thanks to the dev's

EDIT: It would be really nice to be able to launch a site that already has a container assigned and to be able to launch it WITHOUT any container (problem of access to some sites which forces to have a second browser which is really annoying)

Extremely useful add-on not only for managing multiple profiles, but also for maintaining privacy by blocking certain websites from accessing global browser cookies. For instance, you can restrict all Google domains to their own container, that way Google will have restricted access to your personal information.

Works really well. You notice that information is not shared between containers.

많은 웹사이트들이 제 쿠키 뿐만 아니라 딴 사이트 쿠키까지 들여다 보는 걸 아시는지요?
이 부가기능은 쿠키를 격리함으로써 쿠키를 통해 정보를 훔쳐가지 못하도록 해 줍니다.(특히 '구글' 같은 포털들을 따로 가둘 수 있어서 좋습니다.)
개인정보 도둑질 종합세트인 페이스북만 관리해 주는 Facebook Container 부가기능과 함께 쓰시면 좋습니다.(설정 필요 없음)

This is one of the best available features of Firefox. As I'm a Web developer, it makes my life much easier by allowing me to sign into multiple accounts with the same browser, all without increasing resource consumption beyond the level of a normal tab.

And as a user of online services, once all of my different user accounts are untangled, I know I'm less likely to be tracked by all of the services I use when I'm elsewhere on the internet.

Check it out! Firefox is a great browser, but I'd say this one feature on its own justifies trying Firefox, certainly so for anyone who tries to be conscious about their privacy on the web.

Useful add-on for privacy conscious people!
Firefox keeps on fighting a lone battle for years now!