Awesome MQTT

Why HTTP isn’t the King of IoT - Samsung Developer Conference 2017

Building IoT conference 2016 (German)

MQTT broker service and protocol adapter

Fast Java multiprotocol messaging and Integration Patterns server

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

MQTTRoute is an extendable & Scalable MQTT Broker with customizable UI, flexible storage & security options for all IoT / IIoT Implementation.

Java-based high-performance MQTT broker with native multi-tenancy for large-scale IoT

Lightweight, high-performance Go MQTT server supporting distributed cluster

A scalable, secure, easy to use message broker that can be used for IoT, web and mobile use-cases. Open-sourced from IBM MessageSight.

Distributed, scalable publish-subscribe platform with message storage

Scalable and Reliable Real-time MQTT Messaging Engine for IoT in 5G Era

Basic MQTT Broker on the ESP8266

Python MQTT broker using asyncio

Java MQTT Broker supporting MQTT 3.1, 3.1.1 and 5.0. Commercial and open source editions

Distributed, cloud-native MQTT broker in Go built on mochi-mqtt, using Raft for strongly-consistent session ownership and ACL, with a gossip-backed routing table (Olric).

Kotlin Multiplatform MQTT broker, both embeddable and standalone

Java MQTT lightweight broker

Node.js MQTT broker, Standalone or Embedded

The Open Source MQTT Broker - the most popular choice

Async MQTT v5.0 broker in Rust with TCP, TLS, WebSocket, and QUIC transport, plus authentication, ACL, bridging, and session persistence.

Cloud MQTT broker

Extendable MQTT broker in Go with HTTP observability

Light-weight and Blazing-fast MQTT Broker for IoT Edge platform

High performance messaging broker with MQTT Adapter

Multi-protocol brokers written in Rust

High Performance MQTT Server and Client Libraries in Go

Open-source, scalable, fault-tolerant broker for millions of IoT devices

Self-hosted MQTT broker with policy enforcement and a reviewable record of broker decisions, for regulated and industrial systems.

Apache2 licensed distributed MQTT broker, developed in Erlang

Vert.x component for MQTT connections and message exchange

MQTT broker leveraging Apache Kafka as storage and distribution engine

Data-oriented IoT framework and libraries

Secure and reliable device communication platform

Managed cloud broker supporting MQTT, MQTT over WSS, HTTPS and LoRaWAN

Secure and reliable communication between IoT application and devices

Hosted AMQP brokers with MQTT support

Hosted message broker optimized for IoT

Fully Managed Cloud MQTT Broker for large scale deployments.

Free and secure cloud MQTT broker with private namespaces

Cloud managed MQTT service from Google

Cloud managed MQTT service from HiveMQ

Edge AI agent platform; its open-source runtime edge-agents orchestrates AI agents on Linux edge gateways with MQTT as a first-class workflow transport, running offline with local SLMs alongside cloud LLMs.

Fully open-source, distributed industrial IoT platform built on Spring Cloud, with 28 built-in protocol drivers (including MQTT), AI-powered operations via Spring AI, and microservice architecture. (Docs)

Low-code IoT/IIoT platform for industrial automation, SCADA, BMS and remote monitoring. Supports MQTT, OPC-UA, Modbus and 100+ protocols with visual development tools and edge-cloud integration.

Device management, data aggregation, analytics and more. Linux Foundation supported

Device management, data collection, processing, and visualization for IoT

Generates interactive documentation, typed SDKs, and MCP servers from AsyncAPI definitions, including MQTT APIs.

MQTT protocol driver and long-running agent worker gateway for DeepSeek Harness, enabling remote clients to submit, steer, cancel, and observe agent work.

Browser-based MQTT client using websockets

Node.js CLI and library that maps Homie MQTT metadata to Home Assistant MQTT discovery payloads.

Conformance test suites with fuzzing and performance testing

Visual diagram editor for designing MQTT topologies, built with Rust (WASM) and TypeScript. Features live in-browser simulation, code generation, and AsyncAPI export.

A fast, terminal-UI MQTT client written in Rust — inspired by MQTT Explorer, but keyboard-driven and living in your terminal.

A high-performance IoT data generator written in Rust. Supports MQTT, HTTP, and TCP for simulating realistic sensor payloads with Handlebars templates.

Simulate up to 100,000 MQTT clients per server

Multi-protocol mock server with a built-in MQTT broker supporting QoS 0-2, retained messages, topic patterns, and device simulation for IoT development and testing.

Open-source multi-protocol mock server written in Rust with a built-in MQTT 3.1.1/5.0 broker for testing, alongside HTTP, gRPC, GraphQL, WebSocket, Kafka and AMQP mocks.

Open-source diagnostic-oriented MQTT client tool

Command line interface supporting MQTT 5.0 and 3.1.1

Native iPhone and iPad client with a live topic tree, topic board, JSON inspection, and a 13-stage Connection Doctor. Supports MQTT 3.1.1 and 5.0 over TCP, TLS, mTLS and WebSocket.

Visualize MQTT topics in a hierarchy - a MQTT swiss-army knife

Simple lightweight terminal based MQTT monitor and publisher

Simple MQTT Client command line (Python)

Simple fuzzer for the MQTT protocol

Mirror MQTT traffic from one broker to another

Java based MQTT frontend with scripting support

Subscriber client to monitor MQTT Topic Statistics

Practical MQTT Tool with innovative UI for developers

MQTT Client written in Java based on Eclipse Paho with scripting

Lightweight console monitor for mqtt topics

CLI tool for recording and replaying MQTT messages

Display all Topics in an expandable tree view

A desktop MQTT workbench for traffic inspection, replay, load testing, fault injection, and PCAP analysis.

MQTT Client for shell scripting

A console-based MQTT client and commander, especially useful for IoT, Tasmota, and Node-RED setups.

Test console that builds a broker’s topics into a live tree, shows every frame on the wire, and publishes by hand. Desktop app for macOS, Windows and Linux, or a single Docker image.

General MQTT testing app for iOS

Elysia-style application framework for MQTT on Bun and TypeScript. Compose broker adapters, ordered middleware, typed topic routes, MQTT 5 RPC, and AsyncAPI 3.0 docs with new MqttApp().use(...).

Google Chrome MQTT client application

Unified MQTT v5.0 CLI for publishing, subscribing, running a broker, and benchmarking with multi-transport support.

Cross-platform MQTT desktop client for macOS, Linux, and Windows

Browser-based, local-only validator for MQTT topic-filter ACLs that checks wildcard breadth, tenant boundaries, publish/subscribe direction, placeholders, and overlapping rules. Source and method.

Slack app to send messages to MQTT brokers

Self-hosted distributed load testing platform with a web UI; simulates thousands of MQTT devices (QoS 0/1/2 publish, subscribe, request-reply) alongside HTTP, Kafka and other protocols. Commercial, with a free edition.

Simple MQTT client integrated in Visual Studio Code

Typed, versioned data contracts over MQTT from no_std microcontrollers (Embassy) to the cloud (Tokio), with schema migrations at the hub.

Ballerina MQTT client based on paho-mqtt

MQTT for iOS and macOS written in Swift

Asynchronous Erlang MQTT Client

Pure-lua MQTT v3.1.1 and v5.0 client

Clojure MQTT Client

MQTT Client for iOS written in Swift.

A wrapper for the Mosquitto MQTT client library for PHP.

iOS, macOS, tvOS native ObjectiveC MQTT Client

MQTT protocol library for Rust

Type-safe async MQTT client built on rumqttc, with derive macros for typed topics, automatic (de)serialization, and tree-based message routing.

Complete async MQTT v5.0 client and broker library for Rust with TCP, TLS, WebSocket, and QUIC support.

MQTT Client library for the Lua language.

Pure Ruby gem that implements the MQTT protocol

Small library to connect to a MQTT broker. Very, very basic, and not maintained.

Node.js based script runner

A visual tool for wiring the Internet of Things

Authenticated retained-delta aircraft state over MQTT WebSockets for bounded IoT and location-aware integrations.

Listen for images on file server, analyze and create Home Assistant entities via MQTT Discovery.

Control your Sony Bravia TV with MQTT.

MQTT client to control BroadLink RM devices.

Easily extensible Bluetooth to MQTT gateway, currently supports: EQ3 smart thermostat, Xiaomi Mi Scale, Linak Desk, MySensors and Xiaomi Mi Flora plant sensor.

Bridge between Buderus KM200 internet gateway and MQTT.

Publishes Claude Code (Anthropic’s AI coding agent) usage telemetry to MQTT with Home Assistant auto-discovery. 15 sensors, mood classifier.

A Nagios/Icinga plugin for checking connectivity to an MQTT broker.

Python program to enable MQTT control endpoints for chromecasts (both audio and video).

Control your Google Chromecast devices using MQTT.

A MQTT client for CODESYS PLC.

Connect FRITZ!Box to MQTT.

Control (almost) any smart home device, any smart home software, with Google Assistant. Therefore, it transforms actions received from Google by voice commands to MQTT messages.

MQTT Input Plugin for Graylog.

Collection of Go daemons for connecting Domoticz and other stuff.

Subscribe to MQTT topics and insert into InfluxDB.

Bridge between Vorwerk Kobold Vr200 internet gateway and MQTT.

Interface between LG WebOS Smart TVs and MQTT.

Linux service to send Xiaomi Mi Flora plant sensor data to an MQTT broker.

MQTT features for Mopidy.

Stream images from a connected camera over MQTT & view using Streamlit.

A simple service which consumes, transforms and periodically republish json messages on MQTT.

A web gateway that optimizes any MQTT broker when sending real-time data to web clients with automatic throttling.

Send MQTT messages to Elasticsearch.

Subscribe to a topic and show notifications from MQTT messages on Ubuntu & other notify-send compatible Linux distros.

Bi Directional MQTT to OPCUA Bridge.

A Python logging handler module for MQTT.

Execute shell commands triggered by published MQTT messages.

Control processes via MQTT. Ability to send signals via MQTT and to publish stdout/stderr or pipe MQTT payloads into stdin.

Use with carbon plugin.

Route and transform MQTT notifications with 70+ adapters

Route and transform MQTT notifications, with 70+ built-in adapters for databases, messaging and other notification sinks.

A Nagios/Icinga notification module which wraps data into JSON and fires it off to an MQTT broker.

MQTT Gateway (publisher/subscriber) with various plug-ins (OPC UA Bridge, SQL Bridge, REST Bridge, SAP Bridge).

Location tracking and geofencing for MQTT

Utility reporting system health and status via MQTT.

Bridge between the Ixian decentralized P2P network and MQTT/REST. Enables encrypted peer-to-peer messaging for IoT devices with post-quantum security (ML-KEM + AES-256 + ChaCha20).

The easiest way to track your Raspberry Pi or Ubuntu computer system health and performance in Home Assistant via MQTT.

A Linux gateway to connect low-cost microcontrollers only with a serial port to MQTT.

Docker Gateway to send/receive SMS through MQTT using an USB GSM dongle (gammu).

Python based SNMP v2 and v3 bridge to MQTT, active project in late 2025.

Uptime monitoring with an MQTT broker check that connects (optional TLS and auth), publishes a message on a topic and waits for it to come back, recording connect and round-trip times. Also HTTP, TCP, DNS and many other check types, self-hosted or hosted.

Bridge between Sonos and MQTT

Run speedtest-cli and publish results via MQTT.

Modbus master which publishes register values via MQTT.

Control Sunricher LED devices using MQTT.

Publish connected clients from Ubiquiti Unifi to MQTT.

Check for Docker image updates and publish to MQTT, in structure to support Home Assistant’s automated Updates and Discovery.

Xiaomi (Roborock) Vacuum Robots Firmware with MQTT

Control VLC via MQTT.

Addon for a popular DIY barbecue thermometer.

A simple adapter for connection Yamaha AVR to MQTT.

Industrial SCADA/HMI system with MQTT support (plus IEC 61850, OPC UA, Modbus TCP). Runs from a single HTML file in any browser, zero installation. 53 function blocks, 65 graphic elements, real-time trends.

Dashboard editor powered by Web Components and MQTT.

Android app for IoT dashboards

Self-hostable MQTT dashboard/explorer with drag-and-drop panels like cron, button, log and topic browser to help interact and monitor MQTT topics

Universal MQTT Dashboard for Linux/Raspberry Pi

Web interface for MQTT

A small service which will convert mqtt messages to prometheus metrics.

IoT dashboard visualization tool with easy sharing

A web interface for testing interaction between MQTT.Cool and any MQTT broker.

MQTT dashboard application.

Dashboard UI for Node-RED

Time series visualization from MQTT, WebSockets, and more

Free, open-source Material 3 MQTT dashboard for Android, built for Zigbee2MQTT with automatic device discovery.

Smart home automation with MQTT as the central message bus

A lightweight MQTT convention for the IoT

Docker container for easier TLS certificate management

IoT Broker penetration-testing and security assessment

Broker mis-configuration detection for cyber protection

End-to-end encryption and key management for MQTT