NATS

High-Performance server for NATS.io, the cloud and edge native messaging system.

mosquitto

Eclipse Mosquitto - An open source MQTT broker

Scout APM

Less time debugging, more time building. Scout APM allows you to find and fix performance issues with no hassle. Now with error monitoring and external services monitoring, Scout is a developer's best friend when it comes to application development.

vernemq

A distributed MQTT message broker based on Erlang/OTP. Built for high quality & Industrial use cases.

Tasmota

Alternative firmware for ESP8266 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

Node RED

Low-code programming for event-driven applications

RabbitMQ

Open source RabbitMQ: core server and tier 1 (built-in) plugins

zigbee2mqtt

Zigbee 🐝 to MQTT bridge 🌉, get rid of your proprietary Zigbee bridges 🔨

SonarQube

Static code analysis for 29 languages.. Your projects are multi-language. So is SonarQube analysis. Find Bugs, Vulnerabilities, Security Hotspots, and Code Smells so you can release quality code every time. Get started analyzing your projects today for free.

Aedes

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

mop

MQTT on Pulsar implemented using Pulsar Protocol Handler (by streamnative)

CK-MQTT

Tasmota

Alternative firmware for ESP8266 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 (by ndbroadbent)

picobroker

MQtt PicoBroker for ESP32 based on IBM RSMB