http:/ / www.tightvnc.com/
TightVNC is a free remote control package derived from the popular VNC software. With TightVNC, you can see the desktop of a remote machine and control it with your local mouse and keyboard, just like you would do it sitting in the front of that computer. TightVNC is free, GPL-licensed, with full source code available; useful in remote administration, remote customer support, education, and for many other purposes; cross-platform, available for Windows and Unix, compatible with other VNC software; and well maintained and being actively developed.