I have to admit, after all these years, that I take everything coming from that general direction with a huge grain of salt. Crossroads I/O was supposed to be the great zmq successor and failed entirely, nanomsg was supposed to be an even better redesign of zmq and failed and now nanomsg-ng is supposed to be an even better design iteration on nanomsg.

Meanwhile the old/bad/bloated/poorly designed zmq just kept working fine all these years and even got a bunch of useful new features along the way.