High performance mqtt broker

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

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

MQTT Server/MQTT Broker - Scalable Distributed MQTT Message Broker for IoT in the 5G Era

Apache BifroMQ (Incubating) is a high-performance, distributed MQTT broker that natively supports multi-tenancy. It is designed to enable the building of large-scale IoT device connectivity and messaging systems.

The ultimate distributed MQTT broker. Handles 100M+ connections and 10M msg/sec with ease. Built on Kafka to provide industrial-grade persistence and eliminate data loss.

Kafka data generator and load testing tool - generate fake messages, simulate producers and consumers, test broker failures, and run chaos engineering scenarios

ESP MQTT client and broker library

Evidence-first skill collection for Codex, Cursor, and Claude Code covering research, debugging, planning, execution, review, and goal loops.

KubeMQ is a Kubernetes native message queue broker

A MQTT broker,implemented by java and netty,support persistence and cluster

MQTT-PWN intends to be a one-stop-shop for IoT Broker penetration-testing and security assessment operations.