100% open-source IoT Platform - Integrate your devices, create rules, and analyse and visualise your data

HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5. It is the foundation of the HiveMQ Enterprise Connectivity and Messaging Platform

开源 MQTT 服务器(基于reactor-netty实现高性能的、可扩展、支持千万级设备接入集群）支持 mqtt 3.1.1、mqtt 5等协议

A Multi-Tenancy MQTT broker adopting Serverless architecture

Open-source, scalable, and fault-tolerant MQTT broker able to handle 4M+ concurrent client connections, supporting at least 3M messages per second throughput per single cluster node with low latency delivery. The cluster mode supports more than 100M concurrently connected clients.

信也科技MQ消息系统

MQTTX Project 完整实现 mqttv3.1.1 协议，旨在提供易于使用且性能优异的 mqtt broker

java mqtt 基于 java aio 实现，开源、简单、易用、低延迟、高性能百万级 java mqtt client 组件和 java mqtt broker 服务。🔝🔝 记得右上角点个star 关注更新！

reactor3实现的mqtt库

MQTT on Pulsar implemented using Pulsar Protocol Handler

java mqtt-server/broker 使用简单 扩展方便 集群稳定 轻松支持10万并发 已用于生产环境

A lightweight MQTT broker w/ full spec,Clustering,WebSocket,SSL written in Java

smartacus-mqtt-broker is a Java-based open source MQTT broker that fully supports MQTT 3.x .Using Netty 4.1.37

响应式的MQTT Broker项目，计划支持MQTT，WebSocket，CoAP，XMPP等常用的物联网协议。

MQTT broker for java based on Netty

Raptor IoT platform

MQTT Demonstration and client using Android App

This app for detecting if the plant has a disease or good to eat, using a Machine learning model with TensorFlow Lite, and Firebase Database, and MQTT

A smart migration tool to migrate your configuration and persistent connections from Mosquitto to the HiveMQ Enterprise MQTT Broker.

Java implementation of MQTT 5.0 compatible broker based on RLib library.