General Information

VNC stands for Virtual Network Computing, it is a remote desktop protocol based on RFB.
It is widely used and available on all platforms as both client and server. The server generally runs on port 5900.
Click here to see how it compares to the other protocols.
VNC is available under open-source licenses. (ie: GPLv2)

Features

Window Switch sessions using VNC support the following features:

• Full desktop mode is fully supported, but not on Microsoft Windows servers
• Shadowing of other VNC sessions
• Shadowing of existing desktops, also known as "desktop sharing"
• Starting, suspending and resuming of sessions is fully supported

Note: VNC does not support seamless mode. You should use the TigerVNC client and server to ensure all the features are available.

Links

• TigerVNC - the preferred client and server to use
• VNC on Wikipedia has much more information and links