Side by side
Eclipse Mosquitto vs EMQX
Both stand on message queue (mq) software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxMacSelf-hosted+1
Mosquitto provides MQTT broker software and client tools across several platforms at no plan cost. Its self-hosted, on-premises model and best-effort community help are important considerations.
Visit Eclipse Mosquitto Free plan Open source APILinuxMac+2
EMQX offers real-time messaging, data processing tools, broad protocol support, and deployment choices. Serverless provides a free entry point with stated limits; Dedicated Flex starts at $234 per month.
Visit EMQXThe facts
| Eclipse Mosquitto | EMQX | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Yes |
| Runs on | Linux, Mac, Self-hosted, Windows | API, Linux, Mac, Self-hosted, Web |
| Lowest paid plan | Free or on request | Dedicated Flex: $234 a month |
| Plans published | 1 | 4 |
| Maker | Not published | Not published |
| Website | mosquitto.org | emqx.com |
| On message queue (mq) software | #8 of 29 | #4 of 29 |
Eclipse Mosquitto: what it does well
- Free, open-source broker with core MQTT features
- Supports MQTT 5.0, 3.1.1, and 3.1
- Runs on Linux, macOS, and Windows
- Includes a C library and command-line clients
- Configurable delivery guarantees
What to know first
- Community support is best effort
- The listed plan is on-premises
EMQX: what it does well
- Combines MQTT messaging with durable message queuing
- Rule Engine and Flow Designer process data
- Lists more than 50 native integrations
- Security includes TLS/mTLS and audit logs
- Dedicated Flex starts at $234 per month
What to know first
- Serverless is limited to 1 MB messages
- Serverless has limits of up to 1,000 sessions
- Usage beyond Serverless monthly quotas is charged
Alternatives to Eclipse Mosquitto Alternatives to EMQX The whole list

