x0vncserver(1) -- Linux man page
NAMEx0vncserver - VNC server which continuously polls an X display
DESCRIPTIONx0vncserver is a VNC server which continuously polls any X display, allowing it to be controlled via VNC. How usable it will be depends a lot on the machine it's running on, and what you're expecting. It won't be as fast as Xvnc or a native X server with VNC support compiled in, but in many cases it is the best option since it is just an ordinary X application requiring no special installation.
It has many of the same parameters as Xvnc. Running x0vncserver -h will give a list of parameters with descriptions. Note that you need to explicitly specify an appropriate password file using the PasswordFile parameter.
SEE ALSOXvnc(1) vncpasswd(1), vncviewer(1), vncserver(1),
AUTHORTristan Richardson, RealVNC Ltd.
VNC was originally developed by the RealVNC team while at Olivetti Research Ltd / AT&T Laboratories Cambridge. It is now being maintained by RealVNC Ltd. See http://www.realvnc.com for details.