1.eclipse-mosquitto / mosquittoEclipse Mosquitto - An open source MQTT brokermqttbrokermosquittoeclipse-iotiotmessaging+3 moreCOther license11K total2.7K forks+538 starsfrom 10,796 · score 6.29
2.cesanta / mongooseEmbedded web server, with TCP/IP network stack, MQTT and Websocketwebsocketmqttembeddedwebserverweb-serveriot+5 moreCOther license13K total3K forks+401 starsfrom 12,723 · score 6.00
3.nanomq / nanomqAn ultra-lightweight and blazing-fast Messaging Bus/MQTT Broker for Edge & SDVmqttmqtt-brokeriot-edgenngaioactor-model+14 moreCMIT2.7K total324 forks+184 starsfrom 2,470 · score 5.22
4.LiamBindle / MQTT-CA portable MQTT C client for embedded systems and PCs alike.mqtt-clientpublisher-subscribercportablemqttsimpleCMIT900 total310 forks+22 starsfrom 878 · score 3.14
5.shmuelzon / esp32-ble2mqttA BLE to MQTT bridge running on an ESP32mqttblegattbluetoothesp32CMIT777 total119 forks+12 starsfrom 765 · score 2.56
6.tuanpmt / esp_mqtt MQTT client library for ESP8266mqttesp8266iotCMIT1.2K total397 forks+7 starsfrom 1,163 · score 2.08
7.eclipse-amlen / amlenMessage Broker for IoT/Mobile/Web. Mainly uses MQTT v3.x and v5. Aims to be easy to use, scalable and reliablemqttmqtt-serveriothacktoberfestCEPL-2.052 total12 forks+1 starsfrom 51 · score 0.69