---
keywords: [EMQX, MQTT broker, IoT, real-time messaging, data integration, data ingestion]
description: Overview of integrating GreptimeDB with EMQX, an open-source MQTT broker for IoT and real-time messaging applications.
---

# EMQX

[EMQX](https://www.emqx.io/) is an open-source, highly scalable, and feature-rich MQTT broker designed for IoT and real-time messaging applications. It supports various protocols, including MQTT (3.1, 3.1.1, and 5.0), HTTP, QUIC, and WebSocket.

GreptimeDB can be used as a data system for EMQX. To learn how to integrate GreptimeDB with EMQX, please refer to [Ingest MQTT Data into GreptimeDB](https://docs.emqx.com/en/emqx/latest/data-integration/data-bridge-greptimedb.html).
