Welcome to the MQTT mailing list and discussion group.

MQTT is a lightweight publish/subscribe messaging protocol originally developed for sensor applications. MQTT is extremely useful and widely adopted in mobile environments due to the low power consumption, simplicity of API, and small bandwidth used. Clients and servers are available in various languages including C, Python, Erlang, C#, Java etc - see for more information about the protocol and the community around it.

This group is intended to bring together discussions of the protocol and different implementations. Other discussion media exist (for example, individual software implementations may have their own project resources) but this group is for discussion of the protocol and MQTT ecosystem as a whole. Off-topic debates, discussion around alternative protocols, etc. do not belong in this group. Thanks.

Initial posts will need to be moderated by a group administrator before they appear to the community.

Showing 1-19 of 521 topics
Websocket messages Nicolas Jouanin 2:26 PM
How to create username and password in mqtt mosquitto programatically in C# abhinav sharma 7/24/15
subscription and publish management Nicolas Jouanin 7/23/15
Question about retain message management Nicolas Jouanin 7/21/15
Unsubscription of subset allowed ? Nicolas Jouanin 7/18/15
Who's running MQTT in production? martin 7/17/15
Building Mosquitto Library Preetam Joshi 7/13/15
Database application Sy 7/12/15
MQTT Used as a protocol to control Drones over radio waves Tim McClure 7/11/15
mosquitto_loop_start() isn't defined in libmosquitto AlTro 6/30/15
Cant send the connect packet data to the broker. user25677 6/24/15
Several packets in QOS protocol flow Nicolas Jouanin 6/20/15
"Getting Started with MQTT" webinar on July 2 Benjamin Cabé 6/16/15
Does Mosquitto support MQTT-SN or just RSMB? Ryan Benoit 6/10/15
Is it possible to connect MQTT client to RabbitMQ having Node.JS as intermediate gateway? Pritam Upadhyay 6/9/15
Client and SDK for iOS Abdul Hakeem 6/7/15
Yet an other Async MQTT-SN client for Arduino and linux. Tomoaki 6/1/15
Broker Publishing Active Topics List Andy Robinson 5/30/15
[ANN]: VerneMQ, an Open Source MQTT Broker in Erlang André Fatton 5/29/15
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