Development has slowed down over the past year unfortunately. One of the most notable contributions recently was the addition of GSS API support. Overall the AP

Development has slowed down over the past year unfortunately. One of the most notable contributions recently was the addition of GSS API support. Overall the API is pretty small and easy to learn. The biggest advantage is that it takes care of reconnect logic for you and buffer management. It's also async by default which is nice. It's also pretty fast and can easily process 1M msg/s if you need that. I would ignore the czmq API entirely and only use the core API and roll your own stuff around it