VNC

RealVNC - http://www.realvnc.com
The VNC creators
 
TightVNC - http://www.tightvnc.com
An enhanced VNC: Windoze, Linux/Unix, Java
 
SSH Tools - Java based SSH & VNC. Handy for websites
(free) http://sourceforge.net/projects/sshtools/
($ commercial version) http://www.sshtools.com/showMaverick.do


Macintosh

VNC Clients

VNC Servers