Incredibly good! SO USEFUL, Love it!

Update 2020-03: Now support sync, i got 45 containers because i used a lot of computers, but now that i sorted that out it is great.

Old: Cant get it to sync between computers. No point if i have to set it up everytime on every computer.
The idea is supernice do, i can manage multible env. from one instance of the browser. So when it's finished i would def. use it.

It's really useful and makes things easier for me (I believe for majority of users). Would just like Firefox Sync to also sync containers and URLs inside them. That would make things even better in my opinion.

Awesome extension. I have created for myself rules to keep known abusive search engines (Hello Google!) outside of my regular browsing. Although it may not save me from "all seeing eye", I have no plans to make their lives easier))

Also, I would be very glad if in upcoming versions you will introduce possibility to write own rules (pattern matching or something similar), since as of now I had to manually open every Google service I'm using and force it to separated container (and this is not taking in account Google's country specific TLDs).

Thanks!

Excellent user experience; excellent functionality.

Works better than I expected. I use it often for logging into a website using multiple accounts.