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/.."

does what it says: it sandboxes your different accounts. this helps a lot to keep under control your internet footprints.

It would be better if there is shortcut for containers, and more customization.

Very good, but container entries should be sortable, else it gets unwieldy when you have a lot of them.

Love being able to browse and not be tracked around the www

Would be good if you could set a "hompage" for each container

This add-on is great. It does exaclty what I would expect. The only remark is that it would be good if viewing a website outside a container that one can simply click something like, "add this to a container"

EN : Very convenient, this allows you to keep organized when, like me, you have tens of open tabs, this extention allows also to sort them like you have decided in the settings, you can create and/or modify the name and icon of the categories. In short... It is absolutely awsome !

FR : Très pratique, cela permet de s'y retrouver quand, comme moi, vous avez des dizaines d'onglets ouvert, l’extension permet de les trier automatiquement selon vos choix, vous pouvez créer et/ou modifier le nom des catégories. En bref... C'est juste génial !

very good. work not fine and I cannot open the first page on firefox start in Personal area of the Add-On.

Semplicità

Don't want to see all the holiday advertisements, just because you did some research two months ago? Keep the research in your "Travel" container and your default tabs won't know about it.

surprisingly useful at keeping my data secure from other browser tabs

Just what the doctor ordered. The perfect system for keeping popular advertisers to themselves (Facebook, Google, Amazon, etc.) without completely blocking them.

Would love a setting to change the entire tab background color versus just a colored line indicating the container. On large screens with a high resolution, the colored line is only a couple of pixels and hard to see.

+Exactly what I needed!
- Doesn't have keyboard shortcuts