Finally! This was a long awaited feature but this add-on is an elegant and powerful way to handle multi-accounts and profiles in Firefox. For those (as myself) who thought that profiles management was THE feature that lagged behind Chrome in Firefox, this now does more that catch up on it!

useful for keeping work and play separate!

One of the most useful add-ons I have ever tried. This really helps clean up account-hell if you want to keep your identities separated.

A useful extension.

It couldn't be easier to organize my sites into containers. Every feature I felt like I needed was already there to use and easy to find.

Very easy to use. The ability to keep categories of websites separate has greatly enhanced management of my privacy.

Just really useful! Hope it also had a "default site" for each container.

Funziona benissimo. In futuro aggiungerei anche la possibilità (opzionale) di tenere separata la cronologia tra i vari containers.

It will be great if the assigned sites and containers could be synced with the firefox account so users don't have to assign website on different devices separately.

Truly amazing extension.

Très utile pour séparer différentes activités (notamment bancaires et commerciales) du reste de la navigation. D'autant plus que le paramétrage permet d'ouvrir systématiquement certains sites dans un container particulier

Best thing ever :)

Works as advertised, I can separate accounts with the containers with ease.

I hope this add-on can filter by wildcard, e.g. url like *.google.com.

This feature is sooo useful, especially with sites where you have multiple accounts. Or you don't want one site to leak to another! Or you visit, no soo safe for work sites!

This add-on is nearly essential. It safeguards my privacy, and it also keeps me organized. It's one of the first add-ons I download whenever I install firefox anywhere.

Handy for banking, keeping pesky trackers at bay, and using multiple twitter accounts.