You can bookmark about:profiles and click "Launch profile in new browser" under each profile to open it in a new Firefox window. If you are using GNOME desktop

You can bookmark about:profiles and click "Launch profile in new browser" under each profile to open it in a new Firefox window. If you are using GNOME desktop you can also try this to integrate the profiles into the launcher. I wrote it when still using Ubuntu but I'm on Fedora now and it's the exact same steps: https://www.tombrossman.com/blog/2020/launch-firefox-profiles-directly-from-the-ubuntu-dash/ https://www.tombrossman.com/blog/2020/launch-firefox-profile...