Extremely useful. It would be nice if there were some more options such as:
- always associate a container with a dedicated window
- associate a container with a dedicated subset of bookmarks
A good guideline for future development might be to make containers work more like the traditional user profiles.

Enjoying it

This is ludicrously helpful for someone like me who needs to test the same site using multiple user profiles and accounts. Smart implementation.

An excellent add-on that makes it extremely easy working with multiple-accounts in the cloud without having to run things in different incognito windows. Highly recommended for people working with cloud providers and need to login using different roles.

Great app for working multiple accounts, for multiple clients is an amazing time saver.

Fantastic extension! My only wish would be to have keyboard shortcuts or mouse gestures I could map to open new tabs in specific containers.

In a World where Privacy has become Luxury, or a hard Task to implement, this Add-on like Firefox Multi-Account Containers, like Linux and Privacytools.io and many others Libre and Open Source Software and Tools contribute to help People fighting against the monopolistic Plagues like Microsoft, Google, Facebook, Amazon, Apple etc