For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/X11:Pantheon:Apps/openSUSE_Tumbleweed/X11:Pantheon:Apps.repo
zypper refresh
zypper install cozy
For openSUSE Leap 15.1 Ports run the following as root:
zypper addrepo https://download.opensuse.org/repositories/X11:Pantheon:Apps/openSUSE_Leap_15.1_Ports/X11:Pantheon:Apps.repo
zypper refresh
zypper install cozy
For openSUSE Leap 15.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/X11:Pantheon:Apps/openSUSE_Leap_15.1/X11:Pantheon:Apps.repo
zypper refresh
zypper install cozy