Eclipse Mosquitto - An open source MQTT broker
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/.
A Powerful and All-in-One MQTT 5.0 client toolbox for Desktop, CLI and WebSocket.
C/C++ server and network library, including coroutine,redis client,http/https/websocket,mqtt, mysql/postgresql/sqlite client with C/C++ for Linux, Android, iOS, MacOS, Windows, Harmony,etc..
TouchSocket is an integrated .NET networking framework that includes modules for socket, TCP, UDP, SSL, named pipes, HTTP, WebSocket, RPC, and more. It offers a one-stop solution for TCP packet issues and enables quick implementation of custom data message parsing using protocol templates.
HiveMQ MQTT Client is an MQTT 5.0 and MQTT 3.1.1 compatible and feature-rich high-performance Java client library with different API flavours and backpressure support
MQTT Client Examples
📶 An Arduino for ESP8266 asynchronous MQTT client implementation
基于C#、WPF、Prism、MaterialDesign、HandyControl开发的通讯调试工具。支持Modbus Rtu调试、Mqtt调试、TCP调试、串口调试、UDP调试
Kotlin MQTT client for Android
wolfMQTT is a small, fast, portable MQTT client implementation, including support for TLS 1.3.