virtualbox-websrv from spins:invis:15:virtualbox project
Select Your Operating System
Add repository and install manually
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/spins:invis:15:virtualbox/16.0/spins:invis:15:virtualbox.repo zypper refresh zypper install virtualbox-websrv