1.eclipse-mosquitto / mosquittoEclipse Mosquitto - An open source MQTT brokermqttbrokermosquittoeclipse-iotiotmessaging+3 moreCOther license11K total2.7K forks+25 starsfrom 11,314 · score 3.26
2.emqx / emqxThe most scalable and reliable MQTT broker for AI, IoT, IIoT and connected vehiclesmqttiotmqtt-brokererlangiot-middlewarebroker+14 moreErlangOther license17K total2.6K forks+16 starsfrom 16,869 · score 2.83
3.cesanta / mongooseEmbedded web server, with TCP/IP network stack, MQTT and Websocketwebsocketmqttembeddedwebserverweb-serveriot+5 moreCOther license13K total3K forks+6 starsfrom 13,121 · score 1.95
4.rabbitmq / rabbitmq-serverOpen source RabbitMQ: core server and tier 1 (built-in) pluginsrabbitmqamqpmessagingamqp-0-9-1amqp1-0mqtt+4 moreJavaScriptOther license14K total4K forks+5 starsfrom 13,950 · score 1.79
5.emqx / CocoaMQTTMQTT 5.0 client library for iOS and macOS written in Swiftcocoamqttswiftmqttiosmacoscocoapods+3 moreSwiftOther license1.8K total473 forks+1 starsfrom 1,752 · score 0.69
6.arboeh / huABusMQTT bridge for Huawei solar inverters (SUN2000/3000/5000) → Home Assistantevcchuawei-solarmodbusmqtthome-assistanthome-automation+2 morePythonOther license10 total6 forks+1 starsfrom 9 · score 0.69