Perhaps that is how you saw it. However you are dramatically wrong. ZeroMQ v4 does full end-to-end encryption, supports protocols like TIPC, and (you knew this but choose to forget it for reasons I never understood) entirely changes how we write multithreaded applications.

The only plausible reason you could disregard the magic of using the same semantics for secure internet messaging and inter-thread messaging is that you don't write applications.