Whilst these days I hail as a Systems Engineer, my background is in Programming, and I'm finding that software development is once again becoming appealing as a passtime outside of the office.

This is pretty sad, but there are a number of software project concepts I've had been mulling over the yars that I think I'm ready to start writing now I'm not coding for coin.

All of these projects require cross-platform clients that need to talk back to a central server, and unforunately I don't have a nice way of doing this. Enter middleware, or precisely - the lack thereof.

To detail the problem, I'm looking for a clean way of passing messages and objects back and forth between .NET clients running under both the Microsoft and Mono .NET implementations. Throw in asynchronous messaging along with event subscriptions, and there's not really much out there that fits the bill.