I can not give five stars to the original Switch Container
https://addons.mozilla.org/addon/switch-container/
without also giving five to this Switch Container Plus

A small, simple plugin that does exactly what you need.
If you're using multiple containers and want to make things even easier, this is the addon for you. Married with Temporary Containers and Multi-Account containers, this gives you a great (if somewhat complex) private browsing experience.

Not sure whether this is a bug or an oversight, but when you select more than one tab only the first one gets switched. Otherwise nice add-on.

Really usefull in my work!
Thank you!

I used to love the original Switch Container, until I found out that it doesn't work on Firefox 52 ESR (which I have to use at work, as it has Windows Vista installed, not upgradable). At home, I still used it, until I discovered this fork, which is much bigger in size (34kB against 15kB), but also has a better functionality (for example, SCP works on "new tabs", while the former SC never did).

The process to do this manually is so convoluted. This add-on makes it convenient, easy to use and saves time. Just what I needed.

Amazing, just what I needed. Thank you! :)

Works like a charm! especially as you forget to open the right container for a tab. Great Job :D