Mosquitto is an open-source MQTT broker that enables lightweight, efficient messaging for IoT (Internet of Things) devices. It supports the publish/subscribe messaging pattern and provides secure, real-time communication between devices with low bandwidth and power consumption.

Features of Mosquitto:

• Lightweight and efficient for low-bandwidth, real-time communication.
• Supports MQTT v3.1 and v3.1.1 protocols for reliable messaging.
• Secure messaging with support for TLS encryption and authentication.
• Daemonless operation with minimal resource usage.
• Compatibility with MQTT clients and tools, like MQTT.fx and Paho.

To check the installed Mosquitto version, use:

mosquitto -v

Disclaimer: Mosquitto is an open-source MQTT broker developed by the Eclipse Foundation and the open-source community. It is provided under the Eclipse Public License 2.0 and is not affiliated with, endorsed by, or sponsored by any commercial entity. This information is for educational purposes only. Mosquitto is provided "as is," without any warranty, express or implied. Users utilize this software at their own risk.