Best mosquitto Alternatives & Competitors in 2025

HiveMQ is the MQTT based messaging platform for fast, efficient and reliable data movement to and from connected IoT devices and enterprise systems

Open Source

RabbitMQ is an open source message broker software.

Open Source

Powerful SaaS integration toolkit for SaaS developers - create, amplify, manage and publish native integrations from within your app with Cyclr's flexible Embedded iPaaS.

Try for free paid Free Trial

MQTTBox enables to create MQTT clients to publish or subscript topics, create MQTT virtual device...

EMQX is an open source MQTT 5.0 broker for mission-critical IoT scenarios, massively scalable and highly available clustering, running anywhere from edge to cloud.

Open Source freemium

VerneMQ is an open source, high-performance, clusterable MQTT broker.

Open Source

MQTT.fx is a MQTT Client written in Java based on Eclipse Paho.

An all-round MQTT client that provides a structured topic overview

Open Source

emqtt - erlang mqtt broker

Highly scalable MQTT Broker with powerful extensions for all your IoT implementations from small to large enterprise.

freemium $12.0 / Monthly (No of Connections – 25, Data Transfer/Month – 750 GB)

NATS.io is an open source messaging system for cloud native applications, IoT messaging, Edge, and microservices architectures.

Open Source

Apache ActiveMQ is an open source messaging and integration patterns server.

Open Source

D-Bus is a message bus system, a simple way for applications to talk to one another.

MqttDesk is Cross-Platform MQTT Client developed by ioCtrl Technologies LLP.

paid Free Trial $20.0 / One-off (One machine Licence)