Imagine there are three computers monitors at the desk (not really hard to imagine though) and they are each running on a separate machine with different operating systems. Now picture dragging the mouse across all three seamlessly. Well stop imagining and go download Synergy.
This is a really useful Open Source project, but it's not gonna be able to replace a KVM switch (keyboard, video, mouse) because if I'm running different machines on my monitors, it is to fix another computer and don't wan't to install anything unnecessary to get it fixed. Could Picture the scenario where after getting back from work, the laptop gets setup on the desk, and then use Synergy to have the desktop mouse and keyboard to control the laptop without having to plug anything in or enable bluetooth.
Website: http://synergy-foss.org/ Download [ User Guide ]
Issue Tracker: http://synergy-foss.org/issues/
Source Code: http://synergy-foss.org/code/