For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Klampfradler/openSUSE_Tumbleweed/home:Klampfradler.repo
zypper refresh
zypper install webidamd
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Klampfradler/16.0/home:Klampfradler.repo
zypper refresh
zypper install webidamd
For 15.7 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Klampfradler/15.7/home:Klampfradler.repo
zypper refresh
zypper install webidamd