EMQX by emqx
The most scalable and reliable MQTT broker for AI, IoT, IIoT and connected vehicles
About EMQX
From the project's README at github.com/emqx/emqx. Lightly cleaned for readability; for the full source see the upstream repo.
[](https://github.com/emqx/emqx/releases) [](https://github.com/emqx/emqx/actions/workflows/push-entrypoint.yaml) [](https://slack-invite.emqx.io/) [](https://discord.gg/xYGf3fQnES) [](https://x.com/EMQTech) [](https://www.youtube.com/channel/UC5FjR77ErAxvZENEWzQaO5Q)
EMQX is the world's most scalable and reliable MQTT platform, designed for high-performance, reliable, and secure IoT data infrastructure. It supports MQTT 5.0, 3.1.1, and 3.1, as well as other protocols like MQTT-SN, CoAP, LwM2M, and MQTT over QUIC. EMQX enables you to connect millions of IoT devices, process and route messages in real time, and integrate with a wide range of backend data systems. It's ideal for applications in AI, IoT, Industrial IoT (IIoT), connected vehicles, smart cities, and beyond.
Starting from v5.9.0, EMQX has unified all features from the previous Open Source and Enterprise editions into a single, powerful offering with the Business Source License (BSL) 1.1.**
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 16k | github.com/emqx/emqx |
| GitHub forks | 2.5k | github.com/emqx/emqx |
| Docker Hub pulls | 45064k | hub.docker.com / emqx |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 13.4 years | since Dec 2012 |
| Last commit | 3 days ago | May 4, 2026 |
| Releases shipped | 387 | last: 22 days ago |
| Security policy | SECURITY.md | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Security advisories
CVE-2023-37781. What people say on Hacker News
- Show HN: Emmtrix ONNX-to-C Code Generator for Edge AI Deployment
- Show HN: OneCamp – Self-Hosted Slack/Asana/Zoom/Notion Alternative
- A Zero-Layer Approach to Memory Safety (1:1 IR, No Sandbox)
- C# and TypeScript with Anders Hejlsberg [video]
- The history of C# and TypeScript with Anders Hejlsberg [video]
Ready to self-host EMQX?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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