It needs sync to be able to be the same containers across all my Firefox installations on all platforms.

Really Great. It would be nice to add possibility to copy move tabs between containers.

It doesn't sync. I would like to share the same container types between my computers. I have a Mac and a PC.

El concepto de los contenedores, cuando lo entiendes, tiene mucha utilidad.

Great extension. What keeps me from giving 5 stars is that the keyboard shortcuts need to be mappable. It should be one command to open a container tab.

It is a great ideea to bring this feature using this add-on to Firefox, thank you!

Very useful indeed! But I did notice a little problem. When I was in my Personal tab and span a child tab (also personal) to a Medium post as anonymous, one of my cpu cores goes up to 100% load.
That happen every time I spanned the Personal tab with this Medium post.
But, when I opened up the exactly same site on a regular tab (also as anonymous), the cpu was just fine.
So, I logged in at Medium in the Personal context, and the behavior was gone.
That happens on a Firefox Quantum in a Linux Fedora distribution.

A good add-on for keeping some activities separate from each other. The only bad thing that I can say about it is that the icon looks great in default and light mode, but when I switch to dark mode, I can barely see the icon. Still a good add-on, does what it says on the tin.