It may not be quite what you're looking for but IIRC both Daves OSProcess project and Chris's Magma project do some interesting things about inter-image communication. And there's even TeleMorphic in the image that might offer some ideas?

tim
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tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
 Falling slowly, softly falling, the chiasmus collapses to the bar floor.