VNC
VNC is making possible one to see the screen and completely to interact
with a remote computer from any other computer through Internet. VNC works
on many operating systems, allowing connection between different OS. There
is even Java client, allowing remote machine to be controlled from any
computer equipped with browser, without installing any software on it.
Program gives possibility many computers to connect to one, making it great
tool for collaboration and demonstration at class. Published as free software
in 1998 year, different versions of the program are downloaded more than 50
million times until present days. All Linux distributions include VNC client
and server software. It has usage in wide area of activities, such as remote
administration, remote work, support from distance, etc.