Command-line clients (e.g., mosquitto_pub/sub ) are efficient for scripts but lack message visualization, history, and payload formatting. GUI clients provide real-time monitoring, topic tree browsing, and payload encoding/decoding.
Note: If this paper is for an academic submission, verify the latest status of MQTT.fx (original vs. community forks) and consider adding a hands-on evaluation section with screenshots or test metrics. mqttfx
The Message Queuing Telemetry Transport (MQTT) protocol has become the de facto standard for IoT messaging due to its lightweight nature and publish-subscribe model. However, interacting directly with MQTT brokers (e.g., Mosquitto, EMQX) often requires command-line tools or custom code. Graphical clients bridge this gap. Command-line clients (e