MQTT Multimeter

Cross-platform desktop app for testing, debugging, and inspecting raw MQTT messages.

Desktopfree

MQTT Multimeter is a cross-platform desktop app for testing and debugging MQTT communication, letting developers publish, subscribe to, and inspect raw MQTT messages including MQTTv5 features, with saved connection and subscription state. It's built on the MQTTnet library and runs on Windows, Linux, and macOS, aimed at developers and IoT engineers who need visibility into MQTT traffic during smart-home or IoT development.

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