What is the default VNC server included?

By default, there is an application installed in Ubuntu that allows for remote desktop connections over VNC. The application shows up with the name Desktop Sharing in the Unity dock.

What is the actual name of this default VNC application, assuming you wanted to start the graphical application from the terminal.

The default VNC server is called Vino. It's part of the GNOME project. The Desktop Sharing app you see is vino-preferences. It doesn't have a man page that I can find, but the three programs of interest are:

1. vino-preferences
2. vino-passwd
3. /usr/lib/vino/vino-server (it's not in the PATH, in case you want to start it manually.)