Mica MQTT

Lightweight Java MQTT client and broker components for IoT platforms, chat, and push messaging.

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Mica MQTT is an open-source Java toolkit providing both MQTT client and broker components, used for IoT device connectivity, group messaging, and push notifications. It supports MQTT v3.1 through v5.0 and integrates with Spring Boot, Solon, and JFinal, with a hosted demo broker and console. Built for Java developers who want a lightweight, low-latency MQTT layer without adopting a heavier IoT platform.

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