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IBM Websphere MQ Telemetry

The Telemetry MQTT feature is built-in optionally licensed feature in WebSphere MQ version 7.1 and above. It provides full MQTT v3.1 support, IBM MQ and JMS support. IBM WebSphere MQ Advanced includes the MQTT license at no charge. It ships with reference Java (MIDP and above), C and JavaScript (MQTT over WebSocket) clients. Eclipse Paho is highly recommended by IBM.

IBM MessageSight

IBM MessageSight is a DMZ secure MQTT appliance with hardware messaging acceleration for M2M and mobile applications requiring extreme volume, low latency, FIPS 140-2 and NSA Suite B security. Messaging provider for MQTT, HTML5 WebSockets, JMS. Includes C, Java, JavaScript, Apache Cordova/PhoneGap, ObjectiveC clients. Also connects/bridges IBM MQ, IBM Integration Bus, WebSphere MessageBroker.

IBM Integration Bus

IBM Integration Bus V9 has Telemetry feature built-in as optional licensed feature. IBM WebSphere MessageBroker V7 & V8 also include it as optionally licensed feature.

Really Small Message Broker\ 75KB MQTT broker runtime free download as binaries from IBM alphaWorks, RSMB is a C implementation of a tiny MQTT server suitable for development, embedded systems, concentrators or small to medium sized deployments. It provides complete MQTT v3.1 support, bridging, and a C client API.


Mosquitto is an Open Source MQTT server with C and C++ client libraries. A python client library is cared for under Eclipse Paho. For JavaScript, Mosquitto recommends the Eclipse Paho Javascript client. A public, hosted test server is also available (more information)

Eclipse Paho

The Eclipse Paho project hosts an instance of the mosquitto broker as a public test sandbox for the Machine-to-Machine Industry Working Group (more information).


Emitter is clustered and open-source MQTT broker, running on .NET Core platform and using LibUV under the hood to handle the networking connectivity. It proposes several additional features on top of a traditional MQTT broker, as it includes custom per-topic security and shared-nothing scalable architecture which helps you avoid single points of failure. Full source-code available on GitHub.

Eurotech Everywhere Device Cloud

Eurotech Everywhere Device Cloud is a cloud-based service provided by Eurotech.


emqttd is a distributed, massively scalable, highly extensible MQTT message broker written in Erlang/OTP.

emqttd is fully open source and licensed under the Apache Version 2.0. EMQ implements both MQTT V3.1 and V3.1.1 protocol specifications, and supports MQTT-SN, CoAP, WebSocket, STOMP and SockJS at the same time.

emqttd provides a scalable, reliable, enterprise-grade MQTT message Hub for IoT, M2M, Smart Hardware and Mobile Messaging Applications.

The 1.0 release of the emqttd broker has scaled to 1.3 million concurrent MQTT connections on a 12 Core, 32G CentOS server.

Please visit for more service. Follow us on Twitter: @emqtt


The Xively service, formerly known as Cosm, formerly known as Pachube, provides a data cloud for the Internet of Things, with MQTT support in beta. This is not a generic MQTT broker implementation; it uses MQTT as a transport for publishing and subscribing to your already existing data feeds (more information).


Moquette is a Java MQTT broker based on an eventing model with Netty.

Yunba is a backend cloud platform that provides real-time message dispatch service to mobile applications and devices and uses MQTT as a transport protocol, The services include bi-directional push for Instant-Messaging; real-time analyzing; real-time online monitoring. is a cloud messaging service (more information).

webMethods Nirvana Messaging

webMethods Nirvana Messaging provides a messaging engine with support for many different transports. Their MQTT support is described in their blog.


RabbitMQ is an AMQP message broker – with an MQTT plugin (bundled in version 3.x onwards). A public test server is also available (more information).

Apache ActiveMQ

Details of “classic” ActiveMQ’s support for MQTT are available here.

Apache ActiveMQ Artemis

Artemis is a multi protocol messaging broker that supports MQTT. Details can be found here

Apache Apollo

The “next generation” of ActiveMQ, Apache Apollo, supports MQTT via a plugin.


HiveMQ is a MQTT broker which was built from the ground up with maximum scalability and enterprise-ready security in mind. It comes with native web socket support and an open source plugin SDK to extend its functionality or integrate it with other components. A public test server is also available (more information).


As node.js MQTT broker can Mosca be plugged on top of Redis, AMQP, MQTT, or ZeroMQ.

Litmus Automation Loop

Loop is a cloud based MQTT broker with scalability, high availability and security at core. Loop provides full MQTT 3.1 support and JMS connectivity. It can handle extremely large numbers of connected clients. On the other side it can be connected to any ERP, CRM and enterprise architecture with ESB or NoSQL databases for blazing fast data storage.


JoramMQ is an offering by ScalAgent providing a message broker that fully supports MQTT 3.1, JMS 2.0, and AMQP 1.0. Interoperability between these standards is ensured by the message broker. MQTT can be used over TCP/IP, TLS (SSL), WebSocket, and secure WebSocket. JoramMQ is particularly appropriate for applications that need to scale with the number of MQTT clients while allowing the publishers to reliably transmit a large volume of messages with a low latency.


Solace Message Routers (available as hardware and software) are message brokers that support MQTT, JMS, and REST among other APIs, protocols and qualities of service for enterprise messaging, data collection and web/mobile streaming. They support very high connection counts and throughput with built-in buffering to handle bursty traffic, and offer enterprise-class monitoring, high availability and security.


ThingMQ is a carrier-grade MQTT message broker that runs on the cloud. It supports the MQTT 3.1 standard as well as CoAP, REST and WebSockets. Messages published on ThingMQ using MQTT are automatically bridged and can be consumed using CoAP, REST or WebSockets. A shared instance of ThingMQ is offered free of charge.


VerneMQ is an enterprise ready, high-performance, distributed MQTT message broker. It scales horizontally and vertically on commodity hardware to support a high number of concurrent publishers and consumers while maintaining low and predictable latency and fault tolerance. VerneMQ plugins can be developed in Erlang, Elixir, Lua, and any programming language that can implement HTTP WebHooks. VerneMQ uses modern broadcast protocols and LevelDB for state replication in a cluster. VerneMQ is Open Source and Apache2 licensed.


HBMQTT is an open-source implementation of MQTT broker and client. It uses Python 3.4+ asyncio library for providing a mono-threaded, non-blocking implementation of the protocol.

More information on brokers


vertx-mqtt-broker is an open-source implementation of MQTT server. It implements protocol versions 3.1.1 and 3.1, supports QoS 2, and uses OAuth2 for autentication. It uses vert.x as library for tcp managemnet, non-blocking / actor-model, clustering and auth plugin system.