Mosquitto
Mosquitto is an open-source message broker that implements the MQTT (Message Queuing Telemetry Transport) protocol, designed for lightweight publish/subscribe messaging in IoT and machine-to-machine communication. It acts as a central hub for devices to send and receive messages efficiently over unreliable networks, supporting features like QoS levels, persistent sessions, and TLS/SSL encryption. Developed by the Eclipse Foundation, it is widely used in scenarios requiring low bandwidth and power consumption.
Developers should learn Mosquitto when building IoT applications, home automation systems, or real-time monitoring solutions where devices need to communicate reliably with minimal overhead. It is essential for implementing MQTT-based architectures, enabling scalable and efficient data exchange between sensors, actuators, and servers in constrained environments. Use cases include smart homes, industrial IoT, and mobile applications requiring lightweight messaging.