KSP to external program interface

[Camacha]

Some searching did not turn up much, so I figured I would ask my question here: is there some kind of interface to have KSP talk to the outside world, specifically to another program running on the same computer? I know some people made efforts to have Arduinos speak to KSP, but that is not very applicable to desktop programs. There also seems to be a web based telemetry mod that does something similar, but not quite. Feedback, for instance, seems to be missing.

I have not managed to dig much else up, but I might have overlooked things. Is there an easy way of achieving extraspaceprogrammular communication?

[stibbons]

Have a look at kRPC. Apparently uses protobufs over a local socket.

[Camacha]

Even though that uses a network interface, it seems to be pretty much what I am looking for