love the simplicity and ability to seperate sites

Very useful, does exactly what it says on the tin very well and boosts my productivity nicely.

Fantastic - keeps your worlds separate where they belong

Un must-have qui devrait être intégré dans le navigateur !
C'est idéal pour isoler les services très curieux, auxquels vous êtes connectés comme Facebook ou Google... Par exemple pour Google, vous pouvez toujours ouvrir YouTube dans un conteneur dédié, où vous êtes connectés, ce qui permet de rester "anonyme" sur les autres services de la firme.
Il ne manque plus que la synchronisation de ses paramètres dans Sync et ce sera parfait.

The best feature Mozilla team can offer on Firefox.
Love it.
Request - Please have containers synched between different FireFox devices.

Really useful as I sync Firefox between all computers and phones. Helps to keep work and personal life separated.

Really good. Solved my workflow issues instantly.

A must-have, very useful

Works as advertised :-)

This is so useful in a time where people have multiple accounts! The only thing that really needs to be more clear is that it does NOT work with "never remember history", because it took me over an hour to figure out why it didn't work while having all kinds of 5 star reviews!

if you have multiple accounts (work, personal, etc), this is the best add-on for you!

Great

A extensao e excelente para aqueles que assim como eu, usam certas contas para determinados tipos de atividade. Um exemplo sao aqueles que trabalham home office e tem uma conta dedicada para o uso pessoal e profissional.

No meu caso ainda personalizei criando uma aba dedicada aos estudos. Se vale como sugestao, acho que esta poderia ja vir criada por padrao.

The essential add-on for those who wish to separate their on-line personal, social and work lives.

No more juggling different login and sessions or even opening different browsers. It really works, excellent.