I'm not sure what your use case is, but Firefox has Containers [1], allowing you to isolate different online identities into containers. It separates the cookie

I'm not sure what your use case is, but Firefox has Containers [1], allowing you to isolate different online identities into containers. It separates the cookies and storage for each container. An example of where I use this is for separating my personal Gmail from my uni's Google's Workspace account. It's annoying clicking on a uni Google Doc link only for it to block me because it chose my default login which is my personal Gmail. I have to switch between Google accounts (which I believe wasn't possible until recently?). With Containers however, I just open the link in my "Uni" container and I'm good to go. No fuss. I have seen classmates use Chrome profiles for the same example above, but from what they showed me they couldn't have their personal profile and their school profile open at the same time - they had to switch between profiles each time. With Containers, I can access tabs from all containers at the same time. Containers are colour coded so you know which is which. There are additional containers available. If you don't like Meta snooping on you outside of their websites, there's a Facebook container by Mozilla [2] that isolates your web activity from Facebook. Other than that, Firefox does appear to support profiles, but it appears to be a bit clunky. [3] I've never used it and until @dralley's comment didn't even know it existed. [1] https://addons.mozilla.org/en-US/firefox/addon/multi-account-containers/ https://addons.mozilla.org/en-US/firefox/addon/multi-account... [2] https://addons.mozilla.org/en-US/firefox/addon/facebook-container/ https://addons.mozilla.org/en-US/firefox/addon/facebook-cont... [3] https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles https://support.mozilla.org/en-US/kb/profile-manager-create-...