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Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
The most scalable and reliable MQTT broker for AI, IoT, IIoT and connected vehicles
Zigbee 🐝 to MQTT bridge 🌉, get rid of your proprietary Zigbee bridges 🔨
Cloud replacement for vacuum robots enabling local-only operation
The Time Series Visualization Tool that you deserve.
The mqtt.org website
A Powerful and All-in-One MQTT 5.0 client toolbox for Desktop, CLI and WebSocket.
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/.
MQTT gateway for ESP8266 or ESP32 with bidirectional 433mhz/315mhz/868mhz, Infrared communications, BLE, Bluetooth, beacons detection, mi flora, mi jia, LYWSD02, LYWSD03MMC, Mi Scale, TPMS, BBQ thermometer compatibility & LoRa.
A client library for the Arduino Ethernet Shield that provides support for MQTT.
High performance, distributed and low latency publish-subscribe platform.
Add-ons for openHAB 1.x
Cortex - Generates interactive API documentation, typed SDKs, and MCP servers from OpenAPI, AsyncAPI, GraphQL, gRPC, OpenRPC, and Markdown.
Your Bambu Lab. No Cloud. Your Rules. Self-hosted command center for Bambu Lab — from one A1 to an entire print farm.
Home automation firmware for ESP8266-based devices
Node.js implementation of the HomeKit Accessory Protocol (HAP)
An ultra-lightweight and blazing-fast Messaging Bus/MQTT Broker for Edge & SDV
Java MQTT lightweight broker
Barebone MQTT broker that can run on any stream server, the node way
iOS, macOS, tvOS native ObjectiveC MQTT Client Framework
MQTT 5.0 client library for iOS and macOS written in Swift
A dashboard UI for Node-RED
IoT DC3 — Connect the Physical World to AI. An open-source Industrial IoT Runtime for Physical AI: 36 protocol drivers, edge-to-cloud data delivery, and an MCP tool gateway so AI agents act on devices in a safe, controllable, traceable loop.
Full featured Z-Wave Control Panel UI and MQTT gateway. Built using Nodejs, and Vue/Vuetify
A lightweight, high-performance go mqtt server(v3.0|v3.1.1|v5.0) supporting distributed cluster
MQTT client library for ESP8266
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
A highly configurable MQTT message router, where the routing targets are notification plugins, primarily written in Python.
A portable MQTT C client for embedded systems and PCs alike.
MQTT Clients and Servers in Go