head to head · open source
OpenMQTTGateway vs supervisor
OpenMQTTGateway has 4,094 GitHub stars, 906 forks, 48 open issues and last shipped today. supervisor has 2,226 stars, 806 forks, 109 open issues and last shipped 3 days ago. OpenMQTTGateway leads on adoption by 84% (4,094 vs 2,226 stars). OpenMQTTGateway is written in C++ under GPL-3.0; supervisor is written in Python under Apache-2.0. OpenMQTTGateway has attracted 22% as many forks as stars, supervisor 36%. OpenMQTTGateway was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (home-assistant, home-automation), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| OpenMQTTGateway | supervisor | |
|---|---|---|
| GitHub stars | ★ 4.1K | ★ 2.2K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | C++ | Python |
| Last push | 2026-09-20 | 2026-09-17 |
| Forks | ⑂ 906 | ⑂ 806 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenMQTTGateway if
- You weight community size — 4.1K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick supervisor if
- You want the supervisor feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and supervisor fits your workflow better
About OpenMQTTGateway
OpenMQTTGateway is an open source C++ gateway firmware for ESP8266 and ESP32 boards that connects local radio and sensor protocols to MQTT. It lives in the home automation ecosystem and is associated with Home Assistant, OpenHAB, NodeRed, and AWS IOT. The project aims to unify various technologies and protocols into a single firmware, reducing the need for multiple physical bridges.
read the full OpenMQTTGateway overview →
About supervisor
Home Assistant Supervisor is a Python project for the Home Assistant ecosystem, a home automation platform. It is a container based system that manages Home Assistant Core installations and related applications. The project is described as a private cloud solution for home automation, and it is controlled through Home Assistant, which communicates with the Supervisor.
read the full supervisor overview →
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Frequently asked questions
Is OpenMQTTGateway or supervisor more popular?
OpenMQTTGateway has 4,094 GitHub stars and supervisor has 2,226. OpenMQTTGateway has the larger community by that measure.
Are OpenMQTTGateway and supervisor free?
Both are open source. OpenMQTTGateway is licensed under GPL-3.0 and supervisor under Apache-2.0. Neither carries a licence fee.
What is the difference between OpenMQTTGateway and supervisor?
OpenMQTTGateway is written in C++ and supervisor in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, OpenMQTTGateway or supervisor?
Choose OpenMQTTGateway if you want the larger community (4,094 stars) or its GPL-3.0 licence terms. Choose supervisor if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.