<p>
I had the opportunity to chat with Florian Raschbichler and Anja Helmbrecht-Schaar from the company <a href="https://www.dc-square.de/en/">dc-square GmbH</a>, who are developers of the <a href="https://www.hivemq.com/">HiveMQ</a> Broker.
</p>
<p>
If you are new to <a href="https://en.wikipedia.org/wiki/MQTT">MQTT</a> they have <a href="https://www.hivemq.com/blog/mqtt-essentials/page/2/">the ultimate kickstart for MQTT beginners</a>. They also maintain an <a href="https://www.hivemq.com/mqtt-client-library-encyclopedia">MQTT Client Library Encyclopedia</a>
</p>


<h3>Links</h3>
<ul>
<li><a href="https://www.hivemq.com/">https://www.hivemq.com/</a></li>
<li><a href="https://www.dc-square.de/en/">https://www.dc-square.de/en/</a></li>
<li><a href="https://en.wikipedia.org/wiki/Comparison_of_MQTT_Implementations">https://en.wikipedia.org/wiki/Comparison_of_MQTT_Implementations</a></li>
<li><a href="https://en.wikipedia.org/wiki/MQTT">https://en.wikipedia.org/wiki/MQTT</a></li>
<li><a href="https://www.hivemq.com/blog/mqtt-essentials/page/2/">https://www.hivemq.com/blog/mqtt-essentials/page/2/</a></li>
<li><a href="https://github.com/hivemq">https://github.com/hivemq</a></li>
<li><a href="https://www.hivemq.com/mqtt-client-library-encyclopedia">https://www.hivemq.com/mqtt-client-library-encyclopedia</a></li>
</ul>