Great feature, keeps cookies and tracking data "containerized".

It just works.™

Logging in with different Google/Microsoft/whatever accounts has always been a mess of either logging in&out, or opening private windows. Now I can just put them in their own container \o/

ウェブアプリケーション開発に必須

I use this every day to keep work and personal google accounts separate, and occasionally I log in to Facebook in its dedicated container.

Love it! Keep up the good work.

Great app for separating your work sites and personal sites you visit.

I love containers. They have made my life much easier. I often need to have open several email accounts from the same provider, and I used to have to figure out how to use different browsers. Now I just open a new container. Also it makes me more confident browsing as it blocks the cross tab searching from sites like google etc. Yeah containers!

This addon is extremely useful, it is similar in concept to private browsing but expanded upon as to allow saving data between sessions and contextual sessions for specific sites. It allows you to keep work, hobby and social separate for example. I use it all the time, and browsing without it would be a severely lacking browsing experience.
The only downside is that the UI for preferences is not as transparent and user friendly as I would like.

Great extension. Highly recommended. Another tool in the privacy tool belt.

Has big potential, but assignments need improvement. at least sync to Firefox Sync, support for top domains and possibility to edit assignments as text file.

Really helpful for managing multiple accounts with any apps/services you might use. I use it with AWS. Love this add-on!

Excellent

Works like a charm, much more convenient than having multiple profiles in Chrome.

is now really part of my way of working with Firefox. vital to separate work/personnal or banking/gaming accounts.

As a developer, I have found for myself a new use case for containers. I make different containers (eg. dev1, dev2, etc.) and use them to maintain different user sessions in each container while I'm testing my app.

Only thing that is missing (I think) is a quicker way to open certain containers, for example open all tabs in a bookmark group (eg. work related bookmark group) into a particular type of container (eg. work container)

Great way to compartmentalize your different uses on the internet. I use containers for emails, banking, shopping and alternate email accounts. Great feature.

It works as intended. No bugs found.

I would like to see an option in the add-on that allows a "quick toggle" for when people click the + symbol for opening contained tabs faster, rather than press and hold.

Perfect, but really needs firefox sync

This addon is great! It should be included into Firefox.
And as repeated by alot of people already: It would be so much better if the container settings were Synced between devices... Or at least give us a way to import/export them easily

But it's definitely the biggest reason for me to use firefox, after many years of Chrome