Okvm - Open source virtual KVM solutions. KVM switches allow a single operator to control multiple computers and they have evolved from patch panels and mechanical switches to digital KVM switches and KVM over IP devices.
However they all involve some hardware switch device. The notion of "virtual KVM" involves using software to route the operator's Keyboard output, Video input, and Mouse output to/from the target computer - over the IP network. KVM hardware was developed as a console switching technology way before smart thin client tools such as ICA, RDP and VNC were developed. These software tools are now mature, offering high-quality low-bandwidth graphical transfer. Synergy. Teleport.