Multi Monitor Software
The Pro Edition of the Multi Monitor Software MaxiVista can even link up to four computers to create a giant desktop space of up to 10,240x1,600 pixels:
The new desktop real estate allows you to display a word processing software, mail program, media player and instant messenger all at the same time. Or you can also get simultaneous visual access to a massive collection of Photoshop toolbars.
MaxiVista Pro can work with existing hardware multi monitor setups:
MaxiVista Pro can use up to three monitors of the Secondary PC to increase the desktop space of the Primary PC. The Primary PC itself may have an unlimited amount of hardware monitors (more info).
Multi Monitor Video Demo
In this video demonstration you see four PCs linked together by the Multi Monitor Software MaxiVista Professional Edition to create a combined desktop area of a total of four laptops
Program windows can be moved and extended seamlessly across all monitors.