I want to use a "space" or "application" with another computer on the network. Just the UI not keyboard and mouse.
The other goal is to add a pseudo screen, without getting an extra monitor. Can't use os x native screen sharing as that will always have the same content as current action space.
old mac = imac 2009, so cannot use as a targetted display. can use hardware to make it happen.
also similar to http://synergy-project.org/