ESP MQTT client and broker library. This is a lightweight and easy to use MQTT library for ESP8266 and ESP32 devices. It supports client and broker modes, MQTT 3.1.1, arbitrary sized messages, and integrates with ArduinoJson.
BunkerM: All-in-one Mosquitto MQTT broker with Web UI for easy management, featuring dynamic security, role-based access control, monitoring, API and cloud integrations