A quarter century of Mozilla

Interesting, thanks. So the basic ability to separate sessions is there. I quickly tried and failed to find something equivalent to the "Temporary Containers" Firefox extension, so it seems manual action is required to switch profiles.

This is only one part of the setup I currently have in Firefox. I've got it set up to create temporary containers with an empty session whenever I follow a link to a different domain (besides a few sites that automatically get assigned to their own permanent containers), which seems impossible with Chrome currently. That way, even if I click a link on a site where I'm logged in, the target gets a new session and any cross-site tracking will have a harder time linking the two visits.

Now, I'm sure my setup isn't for everyone, since now it matters how you arrived at a particular site, which is probably confusing if you don't expect it (there can be any number of sessions for any particular domain). But I find that property useful, since it trivially enables multiple different logins to the same site without any setup (just manually open a new tab and open the site, and you've got a new session).

I'm (usually) happy with Firefox, so I won't invest a lot of time to recreate this setup with Chrome for now. But it's good to know that this workflow could probably be implemented there with some effort, in case Firefox for some reason ceases to be a viable browser (which I hope it won't).

> Chrome has the ability to juggle multiple profiles, which amounts to the same thing in practice.

Not quite. Chrome can't run two parallel profiles in the same window. For example, I use containers in Firefox to log into multiple AWS accounts (with color-coding for prod/non-prod accounts) using a small plugin: https://imgur.com/a/S9uhNTv

My understanding (which may very well be out-of-date) is that this is more like Firefox profiles with a completely separate `.mozilla` subdirectory with some helpful selection UI (whereas Firefox profiles are more or less completely oblivious of each other). Firefox containers are allowed to co-exist within a single window and can be for as little as a single website rather than an entire "browser session"

I suspect it works just fine if you use OAuth to separate your accounts, but I try to avoid cross-linking accounts whenever possible.