rpmorphan
List the orphaned RPM packages
Finds "orphaned" packages on your system. It determines which packages have no other packages depending on their installation, and shows you a list of these packages. It intends to be clone of deborphan debian tools for RPM packages.
There is no official package available for openSUSE Leap 15.6Distributions
openSUSE Tumbleweed
openSUSE Leap 15.6
openSUSE Leap 15.5
openSUSE Backports for SLE 15 SP4
SUSE SLE-15-SP1
Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.