The most prominent KVM software are Synergy, Input Director, and ShareMouse. The key feature that distinguishes this KVM software from others is the hassle-free monitor switching option. You can easily switch by directing the mouse cursor to the computer's screen boundary. If price is a factor, go for Input Director, Synergy, or ShareMouse. Synergy and ShareMouse are both compatible with Mac, Windows, and Linux, while Input Director is only compatible with Windows.