Just download and then use profile manager to open them. https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles https://suppor

Just download and then use profile manager to open them. https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles https://support.mozilla.org/en-US/kb/profile-manager-create-... This way you can open as many firefox as you want.