What sort of IPC? Windows CE itself doesn't support named pipes or anything
of that sort. You need to tell us what type of data, what timing, and what
quantity of data you expect to send back and forth.
I think that regular WinSock sockets might be your best choice. Open a
TcpListener in the server program and connect to it (at 'localhost' and the
server port number), from the second application using Socket and send the
data.