Best technology for communication between two programs

>>I thought about using WCF but wasn't sure if that was the best option.

It probably is. WCF is the recommended way of communicating between machines on Windows as it for example has a number of extensibility points and supports multiple transports and encodings: http://ift.tt/1D5WESh. You can

You could for example set up a duplex service: http://ift.tt/1D5WCdc.

Or you could set up a WCF service and a client on both machines and communicate from one computer to another using these services.

If you have any more specific WCF questions I recommend you to ask these in the WCF forum (http://ift.tt/1u7xiLz) but WCF definitely sounds like a good option here.

Hope that helps.

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