rpmorphan 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.
It will try to help you to remove unused packages, for example:
 Note that orphan is used in the sense of Debian’s deborphan, and
is NOT the same as Fedora orphaned packages which are packages that
have no current maintainer.