There is absolutely nothing negative to say about this extension, but you should know that it will be twice as powerful if you also install the "Temporary Containers" extension and set it up right.

Fantastic and very useful. I ditched having two profiles running at the same time to use different accounts.
However, could you please introduce the functionality to assign shortcuts to quickly open different type of containers, please?

This is the key USP of Firefox - Privacy & Security first - Great Add-on

Very useful in organizing the tab sessions.

Its like having two different browsers in one. Grate unique feature, available only in Firefox.

This plugin help me alot to separate job sessions from personal sessions

fantastic concept to isolate your browsing from other prying websites.

One of the killer features for Firefox.

this extension is great. lets me sync Firefox across work and personal computers but keep logins (like gmail and such) separate

Brilliant! Really good job! Feels like i don't need another browser. Keep up to date, and thank you Firefox!

Excellent add on, no more private tabs / other browsers needed