Does anyone remember "PatchBay", that worked with Apple's MIDI Manager?

It would be cool if on a mac you could have a similar application that would let you tie lots of inputs and outputs together.

Eg, things could be Terminal Tools, Serial Tools, Serial ports, paired Apple Events (like MPW Shell's stdin/stdout) etc.

So a document would describe a load of things all tied together, editting would be a case of dragging available things from a pallette, and wiring them together on screen by dragging wires from little terminals, output to input.