You can turn three computers into 30 by using “Desktop Multiplier” software from, a Canadian outfit that is offering it free to schools. Your base computers must have the Linux operating system on board, but this too is free and can be installed on any Windows computer as a drive partition, without affecting the other operating system.

The Multiplier software lets each computer handle as many as ten users. Each of those users must have their own monitor, keyboard and mouse, but otherwise it will seem to them that they are the only one on the machine. A calculator on the website lets you figure out your hardware and software savings – typically 70 to 80 percent. There’s lots more info at

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