This add-on is basically the only reason I use Firefox, and it has so many issues that I frequently contemplate leaving it.

Syncing across multiple devices (Windows, Mac, Linux) just doesn't work. It doesn't. On Windows I have 4 duplicate "Home" containers that reappear every time I sync. On Linux I get over 10,000 "Personal" containers. On Mac, who knows. I delete the extra containers (or try, on Linux), and next time I sync a device, they're back! It's maddening!

Now on Linux I've uninstalled and reinstalled a dozen times, and it won't add my custom groups. Where did they go? Why is this so hard?

good

this extension has been very helpful. i see its true value everytime i use firefox.

An app that is not only great, but also necessary!

very helpful

Indispensable ! Le concept est excellent !

It does what it says it does. It would be nice to have a per-container proxy settings, though.

A great must-have extension.

Not a 5-star since Sync across devices just don't exist. Will update when it does.

My golly this extension is giving me a headache. You see, I am trying my best to limit how many browsers I use to just one -- Chrome I believe purposely makes G Suite programs work better on Chrome (GMail, GDocs, etc.), while Edge has a very fast and sleek PDF reader, but Firefox... has THIS!!

This multi-account container is SO GOOD that it is the one thing that neither Chrome nor Edge have anything close to. For background, I have my personal account (for my social media, bills), a school account (assignments, documents, etc.), a junk account (i.e. for registering to a free anime streaming website), and lastly my business account which also gets busy. I used to lose my MIND having to sign in and out in different websites (E-mail, Office.com, Instagram, Twitter) or use an incognito mode, but this saves me SO MUCH TIME, and reduces the confusion I used to face, trying to remember different passwords or which account I am supposed to be using.

Thank you Mozilla. This app single-handedly makes Firefox a mainstay as one of my favorite browsers.