http://www.maxivista.com/multi_monitor.htm
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Multi Monitor Software - Desktop Extension
MaxiVista allows you to use any spare PC as an extended display for your Primary PC:
laptop as a monitor
Avoid the hassle of task switching
Spread windows over both displays to avoid switching back and forth between overlapping applications. Your productivity will be significantly increased
Giant screen resolution
The MaxiVista Pro Edition can link up to four PCs to create a giant desktop space of up to 7,680x1,600 pixels:
4 linked PCs
With an increased desktop space you are able 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
Dual Monitor Support
MaxiVista Pro can work with existing hardware dual monitor setups:
MaxiVista in Dual Monitor setups
MaxiVista 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
New purpose for used computers
Do you have a Laptop or Tablet PC laying around, gathering dust while working on your primary PC? Why not take advantage of that high-quality TFT display for just a fraction of the cost of purchasing a second monitor? MaxiVista gives even dated Windows 98 laptops new life and purpose
