What is Synergy?
Synergy is Free and Open Source Software that lets you easily share your mouse and keyboard between multiple computers, where each computer has its own display. No special hardware is required, all you need is a local area network. Synergy is supported on Windows, Mac OS X and Linux.Download synergy
The only requirement is of a local network connecting all the computers together so you can define one computer as a server and the others as clients. The “server” computer has the keyboard and mouse physically connected to it. Other computers that will share the keyboard and the mouse are the “clients”.