Until now, running multiple computers with one keyboard and mouse has tended to require KVMs or wormholes , but Microsoft developer Truong Do has a better idea. Working at Microsoft's Garage -- Redmond's after-hours pet project program -- he built Mouse Without Borders: software that lets you control computers on the same wireless network with one set of inputs as if it was one machine with a multiple display. Up to four systems can be tied together and the software also provides for seamless drag-and-drop file transfer. Microsoft is releasing it free of charge at the source link, plus you can see Truong Do talking up his creation after the break.