live-net-installer from KDE:Medias project
Select Your Operating System
Add repository and install manually
For standard 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/KDE:Medias/standard_15.5/KDE:Medias.repo zypper refresh zypper install live-net-installer
For standard 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/KDE:Medias/standard_15.4/KDE:Medias.repo zypper refresh zypper install live-net-installer