tigervnc-xorg-extension 1.7.0-2ubuntu1 (ppc64el binary) in ubuntu zesty

 VNC stands for Virtual Network Computing. It is, in essence, a remote
 display system which allows you to view a computing `desktop' environment
 not only on the machine where it is running, but from anywhere on the
 Internet and from a wide variety of machine architectures.
 .
 It contains an X server connector so clients can connect to your local X
 desktop directly.