Always-online cloud broker
Your broker runs in the cloud around the clock. Devices stay reachable from anywhere with an internet connection.
NEWMQTT One and iotBind are now one platform
The cloud MQTT broker for your IoT devices
Connect sensors, microcontrollers, mobile apps and dashboards through a reliable, always-online MQTT broker. Free to start, standards-based, and fully integrated with iotBind.
1883
MQTT
Standard TCP connection
8883
MQTT over TLS
Encrypted connection
8083
WebSocket
For browsers and web apps
8084
Secure WebSocket
Encrypted, for the web
Everything your devices need to talk
A managed broker that handles the messaging layer, so you can focus on building your product.
Lightweight and fast
MQTT is designed for constrained devices and unreliable networks. Messages are delivered in milliseconds with minimal bandwidth.
All QoS levels
Choose between QoS 0, 1 and 2 per message: from fire-and-forget telemetry to exactly-once delivery for critical commands.
Secure by design
Every broker has its own credentials and topic access rules. Use TLS and secure WebSocket to encrypt traffic end to end.
Web ready
Connect directly from the browser over WebSocket to build live dashboards and control panels without extra servers.
Unified with iotBind
Manage accounts, projects, brokers and dashboards from one place on the iotBind platform.
From zero to live data in three steps
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Create your account
Sign up for free on iotBind — one account gives you access to both platforms.
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Start a project
Create a project and get your broker address, username, password and topics automatically.
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Connect and publish
Point any MQTT client, device or app to your broker and start publishing and subscribing.
Built for real-world IoT
MQTT is the backbone of millions of connected products. Here are a few things you can build with MQTT One.
Smart home
Control lights, switches, doors and appliances, and receive instant status updates on your phone.
Smart agriculture
Collect soil moisture, temperature and humidity readings from the field and automate irrigation.
Tank and level monitoring
Track water and fuel tank levels remotely and get alerted before they run low or overflow.
Fleet and asset tracking
Stream GPS positions from vehicles and assets and display them live on a map.
Industrial telemetry
Gather machine data and sensor readings from production lines for monitoring and maintenance.
Health and safety
Monitor health parameters through sensors and send real-time alerts when something needs attention.
MQTT One is now part of iotBind
We have unified both platforms so you get a complete IoT experience with a single account.
- One account for MQTT One and iotBind
- Brokers created automatically for your iotBind projects
- Dashboards, widgets and mobile apps on top of your MQTT data
- Existing MQTT One brokers keep working as before
MQTT OneCloud MQTT broker
IoT platform
One account · One place · All services
Works with any MQTT client
MQTT One speaks standard MQTT, so you can use the libraries and tools you already know: Arduino and ESP32, Python, Node.js, JavaScript in the browser, mobile apps and command-line tools.
import paho.mqtt.client as mqtt
client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
client.username_pw_set("YOUR_USERNAME", "YOUR_PASSWORD")
client.on_message = lambda c, u, msg: print(msg.topic, msg.payload.decode())
client.connect("your-broker.mqtt.one", 1883)
client.subscribe("your/topic", qos=1)
client.publish("your/topic", "22.5", qos=1)
client.loop_forever()Frequently asked questions
What is MQTT One?
MQTT One is a cloud MQTT broker for the Internet of Things. It receives messages from your devices and delivers them to every client subscribed to the same topic — reliably and in real time.
Is MQTT One free?
Yes. You can create an account and use the broker for free through the iotBind platform.
Where do I create an account or log in?
Account registration and management are now handled by iotBind. One iotBind account gives you access to both platforms.
I already have an MQTT One account. What happens to it?
Existing accounts are being merged with iotBind. Log in on the iotBind platform to manage your account and brokers. Your existing broker connections keep working as before.
Which devices and languages can I use?
Any device or software that supports MQTT: ESP32, ESP8266, Arduino, Raspberry Pi, Python, Node.js, Java, C#, Go, browsers over WebSocket, mobile apps and command-line tools such as mosquitto.