This page is an effort to list the publically-accessible MQTT brokers, often useful for testing and prototyping.
Note: none of these test brokers (except mqtt.flespi.io) carry any guarantee of service. Be sensible when using them and don't break things for others! :-)
| address | mqtt.flespi.io |
| port | 1883 (TCP), 80 (WebSocket), 8883 (SSL), 443 (Secure WebSockets) |
| type | flespi |
| info | requires signup/username, information page, REST API, MQTT 5.0 compliant |
| address | www.cloudmqtt.com (Note: actual host varies, see dashboard) |
| port | 18443, 28443 (SSL) |
| type | mosquitto |
| info | requires signup/username and password, pricing (free plan available), documentation |
| address | mqtt.dioty.co |
| port | 1883 (MQTT), 8883 (MQTT+SSL), 8080 (WebSockets), 8880 (WebSockets+SSL) |
| type | mosca |
| info | Free - requires signup/username and password, documentation, includes mobile IoT app (iOS and Android) |
| address | mqtt.swifitch.cz |
| port | 1883 (MQTT) |
| type | mosquitto |
| info | Free, it is mostly running for Swifitch project, but you can use it too for testing your IoT or whatever ;), it is running on profesional VPS. |
| address | broker.bevywise.com |
| port | 1883 (TCP), 8443 (WebSockets) |
| type | Bevywise |
| info | web page. Secure. Need to sign up to view your devices. Use MQTT Authentication in your devices to connect securely. Free trial with unsecure ports (see https://devicemanager.bevywise.com/help) |
| address | mqtt.fluux.io |
| port | 1883 (TCP), 8883 (TLS) |
| type | ejabberd |
| info | Free - no registration required, MQTT 5.0 compliant |
| address | console.solace.cloud (MQTT hostname varies, see dashboard) |
| port | TCP, TLS, WS, WSS: varies per instance |
| type | solace |
| info | requires sign-up, free plan available (50 connections), getting started, docs |