Package: virt-viewer

"virt-viewer" package binaries on CentOS:

/usr/bin/remote-viewer /usr/bin/virt-viewer

You may install this package on CentOS with yum install virt-viewer

"virt-viewer" package binaries on Debian:

/usr/bin/remote-viewer /usr/bin/spice-xpi-client-remote-viewer /usr/bin/virt-viewer

You may install this package on Debian with apt-get install virt-viewer