Funny, how there is a more popular extension just like this one, with limited functionality, tailored for facebook.
Kudos Mozilla for catching the newbs and plebs and sharing digital justice with those who are too busy to care. You guys are heroes without fame. Stay true

Almost perfect. It's just boring to open new tabs but I think that's because of Firefox limitations. I was expectating something like Chrome profiles completely separated. But for now, it's breaking a leg

I've been using this extension for a long time, and I could not live without it. I highly recommend id.

Howerver, I would love to have keyboard shortcuts for accessing & sorting containers (CTRL+period doesn't work on my azerty OS X keyboard). This is a real usability problem for me, it's so annoying to use the mouse to open a tab...

Merging and splitting windows based on tabs would be nice too (merge all windows, split all "Google" container tabs into new window, etc).

Another annoying thing is opening content from other apps. Firefox should ask for a container to open the link in.

Je l'utilise au quotidien et il fonctionne parfaitement.
Très utile pour avoir plusieurs sessions sur un même site :)

The most useful extension I've ever used. I setup containers for the multiple cloud accounts I use on a daily basis. Before, I juggled three browsers in regular mode and 'private/incognito' modes.

Some wish list items to earn five stars:
* More colors to choose from, or a better way to indicate tabs than just the colored underline. Perhaps container tabs can be FILLED with the color (even filled with a pattern).

* The ability to re-order containers...or have 'sync' preserve the original container order. When I sync containers to a new install, the containers come up in random order. It would be great to be able to order the containers, if they cannot order themselves according to the original order. Along these lines, on the new install, the default containers ('Banking', 'Shopping', etc) remain even if deleted from the source. Maybe remove these if the source didn't have them.

Dope add-on!

Works perfectly for every site I have set up, except for Twitter. I have set up a container for Twitter, but any time I open the site, it doesn't open in the Twitter container, even though I have checked the option for it to do so. I will use this add-on from now on, but I would like for this tiny flaw to be addressed and fixed.

I couldn't live without this extension anymore!

It's exactly what I've been looking for, but I have a few gripes about it:

1. Moving existing tabs to containers is a real pain (new users). The only way I know is to Right click tab > Reopen in container, but this produces a duplicate and then I have to delete the old tab.
2. It's very slow to toggle containers on/off and you can't see which ones are currently switched on. it could do with a simple toggle method which would grey out the group or show a hidden icon next to it. Personally I would like to use 1 group at a time and leave the others off.
3. Very limited list of colours and icons for containers. It needs basics such as music, films, news, coding, videos etc.
4. I've moved the icon to replace the new tab button in the toolbar using Customize. Could the CTRL+T shortcut be linked with the addon as well?
5. After adding loads of tabs using above method 1 of my groups is totally empty, others seem suspiciously empty (1-2 tabs only), I have lost quite a few tabs by using this.
6. Not compatible with "group speed dial" for opening new tabs
7. When reloading the browser tabs fall out of containers and they become empty, defect?

excellent tool. use often to logon to multiple gmail accounts, along with social media sites that I have two user IDs.

It's a good tool to separate the browsing spaces, however, I find it somehow half-way between the private mode and the regular mode.
For example, I have opened multiple sites in several containers, then I have checked the cookies set by various sites by going to Options -> Privacy and Security -> Cookies and Site Data -> Manage Data. I was surprised to see them all, without any classification. The extension doesn't allow a per container management of the cookies.
I was also expecting it to let me choose which other extension is enabled in any of the containers, but I guess that feature might need an implementation at a lower level.
Later edit: I often start a regular tab because either I forget to long click on the "+" button to start a container tab or I press Ctrl + T (I am used to it). Maybe the Ctrl + T shortcut should open a new tab having the same type as the current one.

Perfect to keep work and personal separate.

Не хватает только возможности сортировки списка контейнеров.

I missed this feature so much from Chrome, finally I realize it was here all along. It's stylish and works great. Love it.