This feature make me back again to Firefox as default browser. Congratulations FF. Team! This extension really rocks. I really don't know why this is not default at browser download. Please do it!

This changes how I'm browsing, and automatically putting the sites in a correct container is a life-saver. I'm missing a way to order by containers, but other than that, I haven't noticed anything that doesn't suit my needs.

Sadly, this feature that is already in the default Firefox for Windows features isn't integrated to Android's version...

Excellent for multiple reasons. One, keeping multiple accounts logged in simultaneously to one website. Two, keep tracking and privacy invasion to a minimum.

I love this addon

The BEST and must have add on. Great work FIREFOX team.

Fantastic feature not available in any other browser.

Unironically the single-greatest advantage of Firefox over other browsers right now. This should honestly be adopted in the main browser and replicated by others, but for now you should just add this extension yourself.

Finally, synced container is available.

This feature has become an absolute must for my current workflow at work. I keep my personal and work related Google accounts separate. I can isolate certain web sessions from each other for different testing purposes easily. It's just an amazing feature allaround. Don't browse without it!

It is perfect now that it supports sync!