hwserver	pbdZMQ	Hello World server.
hwclient	pbdZMQ	Hello World client.
wuserver	pbdZMQ	Weather update server.
wuclient	pbdZMQ	Weather update client.
taskvent	pbdZMQ	Parallel task ventilator.
taskwork	pbdZMQ	Parallel task worker.
tasksink	pbdZMQ	Parallel task sink.
msreader	pbdZMQ	Multiple socket reader.
