I have been using VNC for years and I always assumed it to be a product of a company named RealVNC. It was only recently that I realised that VNC (Virtual Network Computing) is a open-source technology and had been first developmed on the Unix platform !!!...(I thought VNC works only on Windows)
We have VNC servers available for all platforms such as Unix X-window, Solaris CDE, Linux, Windows XP etc.
More info can be found at :