This is the start of a project bridging zeromq (zeromq.org) and vert.x (vertx.io).

https://github.com/p14n/vert-zeromq

ZeroMQBridge bridge = new ZeroMQBridge("tcp://*:5558", vertx.eventBus());
bridge.start();

vertx.eventBus().registerHandler("testHandler", new Handler>() {
        @Override
        public void handle(Message message) {
                message.reply(message.body());
        }
});

 Hopefully I'll get the time soon to make it a proper vert-x mod.