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TBMQ Professional Edition is the commercial MQTT broker built by the ThingsBoard team for large-scale IoT: scalable, fault-tolerant and durable messaging for millions of MQTT 3.x and 5.0 clients. It runs the same masterless, Kafka-backed cluster as the Community Edition — measured at 100M+ concurrent connections and 3M+ messages per second — and adds what production teams need on top: OAuth 2.0 single sign-on, role-based access control, audit logs, domain management, white labeling and a managed Private Cloud.

Start with the public demo broker below, then continue to the architecture, installation, security and client management sections.

Connect in minutes

Use the free public MQTT broker — no installation required.

Host: demo.tbmq.io
TCP Port: 1883
TLS Port: 8883
Username: demo
Password: (leave empty)

Terminal window
# Subscribe to a topic
mosquitto_sub -d -h demo.tbmq.io -p 1883 -q 1 \
-t sensors/temperature -u demo
Terminal window
# Publish a message
mosquitto_pub -d -h demo.tbmq.io -p 1883 -q 1 \
-t sensors/temperature -m 25 -u demo

Integrations