This is covered on the other page they link to:<p><a href="http:&#x2F;&#x2F;bravenewgeek.com&#x2F;dissecting-message-queues&#x2F;" rel="nofollow">http:&#x2F;&#x2F;bravenewgeek.com&#x2F;dissecting-message-queues&#x2F;</a><p>&quot;ZeroMQ is capable of sending over 5,000,000 messages per second but is only able to receive about 600,000&#x2F;second. In contrast, nanomsg sends shy of 3,000,000&#x2F;second but can receive almost 2,000,000.&quot;<p>So.. nanomsg is 10x faster.  Why would one use nats?