MozillaFirefox from home:dsterba:firefox project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:dsterba:firefox/openSUSE_Tumbleweed/home:dsterba:firefox.repo zypper refresh zypper install MozillaFirefox