quilter from X11:Pantheon:Apps project
Select Your Operating System
Add repository and install manually
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/X11:Pantheon:Apps/openSUSE_Factory/X11:Pantheon:Apps.repo zypper refresh zypper install quilter
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/X11:Pantheon:Apps/15.6/X11:Pantheon:Apps.repo zypper refresh zypper install quilter