It depends on what you mean by IPC I guess. There's a billion and one ways to do it, everything from message passing to shared memory. If you want to do Windows

It depends on what you mean by IPC I guess. There's a billion and one ways to do it, everything from message passing to shared memory. If you want to do Windows-style IPC on UNIX, wouldn't SYSV IPC suffice? (QNX is of course another beast altogether.)