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I can finally use various Google services without then Google following me everywhere. It's nice to have different purpose accounts completely separated. Also love that I can set websites to automatically open in particular containers.

Rempli son office : simple et vraiment très utile, que demander de plus à cette extension si ce n'est plus d'icônes pour plus de variétés ?

L'UX peut encore être améliorée et il y a des fois où c'est légèrement contraignant, mais déjà un outil utile

Great Add-On!
Just sad that it doesn't work on android.
Further suggestion:
1. Better way to modify the container settings
(basically direct access to storage.js with a nice UI)
2. Import/Export (since sync doesn't work)
3. More colors and more icons! :D

Killer feature. This made it possible for me to switch from Chrome to Firefox. I was heavy user of Chrome's profile feature to manage various aspects of my browsing history including separating my personal and work profiles which in turn included one profile for each customer I work for.

Brilliant extension - it finally allow browse safely without spilling and sharing to much data between sites. It's like 'private mode' on steroid when you are not limited to single private mode but you can have multiple private modes on per-site basis!

Great idea with serious usability issues. It's way too easy to accidentally open a new tab in the global container space. The addon should bind to Ctrl+T or provide it's own keyboard shortcut to open a new tab in the current container. Ctrl+. is too indirect. It's also annoying to have a delayed confirmation that a site should always open in a specific container after explicitly checking the "Always open in (container)" box. Finally, the "flicker" when opening a new tab that is set to always open in a certain container is bad. I think it's opening a normal tab, then closing it and opening a container tab? It's distracting and looks broken.

Isolating tabs has changed my workflow forever.

one of Firefox's the killer features.
can't browse the web without it (i have containers for Google / Facebook / Amazon+Goodreads .. anything i use daily that could share my sensible preferences has its container)

Great for separating different tabs of my work and personal projects

Though I don't know the true usage of extension, I use it to add colors on my tabs so that I can tell whether the tab is for working or gaming,etc.

Fantastic Add-on! I used to completely get rid of cookies, since they intermingled with everything else. Having them seperated is great!

After using it for a while, I have nothing but high-praise for the Mozilla developers. My only recommendation would be to allow for custom matching rules (perhaps *.domain.com -> domain container; or even *.domain.*, in case there are different .tlds).

Bastante util, no da ningun problema es lo mejor tener todo separado y ordenad por colores, todo esto es un plus, porque lo principal es interrumpir el posible compartir informacion entre paginas.

I've been a long time Firefox user and have been making use of it both at home and at work. With Multi-Account Containers Firefox allows me to maintain a separation between my personal tabs and my work tabs. It's also very handy for browsing web sites that are sensitive such as logging into bank accounts. This add-on is one that is very useful for those who have a dual purpose use for Firefox. I highly recommend this plug-in. **Update**: Mozilla has been frequently updating this add-on and it's just gotten better and better. Thank you for a perfect add-on Mozilla, you are awesome and I love Firefox and this add-on.

This is an excellent Add-on!
In future versions of Firefox it should come preinstalled and be easier to use.
Some things that might help:
- Add a "new container" button beside the "+" (new tab) button.
- Allow users to edit which websites are managed by each container directly from the add-on, without having to navigate there.

I cannot emphasize this enough: make this default and give it more visibility, otherwise only a bunch of us nerds will use it.

All my cookies organized as I want :)

Super useful in a work environment. To keep both Work and Personal worlds apart. Easy to use and enhances privacy to another level giving control to what interacts with what in an easy and straightforward way.

Great feature. Convenient for keeping session data separate during web development and testing. An essential feature for privacy as well. Features like this are why Firefox is always my default browser.

Fulfilled its promise, great way to separate "workloads", no only private/work, but also "general/materials for pet project a/materials for pet project b/.."