EMQX
The World's Most Scalable Open-Source MQTT Broker.
Overview
EMQX is a popular open-source MQTT broker designed for large-scale IoT deployments. It can handle tens of millions of concurrent connections on a single cluster. It offers both an open-source edition and an enterprise edition with additional features for mission-critical applications, as well as a fully managed cloud service.
✨ Key Features
- Massive scalability (100M+ connections per cluster)
- High availability through clustering
- Support for MQTT 5.0, CoAP, LwM2M
- Powerful rule engine for data processing
- Data integration with Kafka, databases, and cloud services
🎯 Key Differentiators
- Proven scalability to 100 million connections
- Strong open-source foundation
- Built-in rule engine for edge data processing
Unique Value: Offers unparalleled scalability for MQTT-based IoT solutions, backed by a strong open-source community and enterprise-grade features.
🎯 Use Cases (4)
✅ Best For
- Powering the messaging backend for a large fleet of electric vehicles
- Aggregating data from millions of smart home devices
- Serving as the MQTT broker for a city-wide sensor network
💡 Check With Vendor
Verify these considerations match your specific requirements:
- Small projects that do not require high scalability
- Users who need extensive industrial protocol support out-of-the-box (e.g., Modbus, OPC-UA)
🏆 Alternatives
Significantly more scalable than Mosquitto and offers more deployment flexibility (on-premise, any cloud) than the native brokers in AWS or Azure.
💻 Platforms
✅ Offline Mode Available
🔌 Integrations
🛟 Support Options
- ✓ Email Support
- ✓ Live Chat
- ✓ Phone Support
- ✓ Dedicated Support (Enterprise tier)
🔒 Compliance & Security
💰 Pricing
✓ 14-day free trial
Free tier: EMQX Cloud Serverless: 1 million session-minutes/month free
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