I have used this for add-on for quite a number of years, have never experienced any problems, and appreciate the role that it plays (with the Facebook-container package as well). Lastly, as an add-on it's been vetted by Firefox, which should be another layer of correctness and security for the code.

Absolutely invaluable

Very powerful & useful addon.

Realy good. Thanks for this add-on

Very good extension (previously didn't know this was possible 😀). It's useful for isolating Work and personal tabs of course (eg. Github for work and personal account). Also proved to be very useful for opening AWS Console pages of multiple accounts at once (each in its own container)

Quirky and a smidge non-intuitive, but this add-on is incredible. The functionality of this add-on combined with OneTab makes Firefox insanely useful for the poweruser. More people need to know about this add-on.

What do I do with it? I have my Gmail accounts each open in their own protected named island. All of my google-verses live separately: day job, my two small businesses, an association I volunteer for, and personal. Beyond Google, I have 10+ other containers for Development work, Writing, Finances, anything Government and tax related, Shopping, Social Media, etc. And none of them can talk to each other.

This add-on is awesome. And with OneTab I can change context for what I am working on at any given moment, snapping in and out of whole suites of tabs.

This is powerful stuff.