Mosquittto是针对MQTT 3.1版本和3.1.1版本的一个开源实现的服务器。它包含C和C++的客户端库，以及用于publish/subscribe的实用程序:mosquitto_pub/mosquitto_sub。

It is a collection of autonomous computing elements(hardware devices eg.computers, or software processes) that appears to its users as a single coherent system.