The most scalable open-source MQTT broker for IoT, IIoT, and connected vehicles

The MQTT client for Node.js and the browser

Open source platform for iot , 6 min Quick Deployment,10M devices connection,Carrier level Stability;物联网开源平台,6分钟快速部署,千万级承载,电信级稳定性. Low code for Object model-Rule Engine-Data Channel-Configuration Page; Fully open source, Multi industrial protocols are compatible.物模型-规则引擎-数据通道-组态页面全流程零代码开发、全业务全链路模拟压测、前后端完全开源、多行业工业协议兼容。QQ群:346566935

MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker). The implementation is based on the documentation from http://mqtt.org/.

High performance, distributed and low latency publish-subscribe platform.

Barebone MQTT broker that can run on any stream server, the node way

Open-source IoT Gateway - integrates devices connected to legacy and third-party systems with ThingsBoard IoT Platform using Modbus, CAN bus, BACnet, BLE, OPC-UA, MQTT, ODBC and REST protocols

An ultra-lightweight and blazing-fast Messaging broker/bus for IoT edge & SDV

The fully compliant, embeddable high-performance Go MQTT v5 server for IoT, smarthome, and pubsub

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

A lightweight, high-performance go mqtt server(v3.0|v3.1.1|v5.0) supporting distributed cluster

Gmqtt is a flexible, high-performance MQTT broker library that fully implements the MQTT protocol V3.x and V5 in golang

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

MQTT client/broker using Python asynchronous I/O

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

MQTT Broker library for ESP8266 Arduino

A web interface for MQTT