head to head · open source
OpenMQTTGateway vs MerossIot
OpenMQTTGateway has 4,094 GitHub stars, 906 forks, 48 open issues and last shipped today. MerossIot has 537 stars, 103 forks, 11 open issues and last shipped 7 months ago. OpenMQTTGateway leads on adoption by 662% (4,094 vs 537 stars). OpenMQTTGateway is written in C++ under GPL-3.0; MerossIot is written in Python under MIT. OpenMQTTGateway has attracted 22% as many forks as stars, MerossIot 19%. OpenMQTTGateway was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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 | MerossIot | |
|---|---|---|
| GitHub stars | ★ 4.1K | ★ 537 |
| License | GPL-3.0 | MIT |
| Written in | C++ | Python |
| Last push | 2026-09-20 | 2026-03-07 |
| Forks | ⑂ 906 | ⑂ 103 |
| 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 MerossIot if
- You want the MerossIot feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and MerossIot 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 MerossIot
MerossIot is an asynchronous Python library for controlling Meross smart home devices, built for Python developers and home automation builders who want to drive Meross hardware from code rather than through the vendor's app.
read the full MerossIot overview →
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Frequently asked questions
Is OpenMQTTGateway or MerossIot more popular?
OpenMQTTGateway has 4,094 GitHub stars and MerossIot has 537. OpenMQTTGateway has the larger community by that measure.
Are OpenMQTTGateway and MerossIot free?
Both are open source. OpenMQTTGateway is licensed under GPL-3.0 and MerossIot under MIT. Neither carries a licence fee.
What is the difference between OpenMQTTGateway and MerossIot?
OpenMQTTGateway is written in C++ and MerossIot 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 MerossIot?
Choose OpenMQTTGateway if you want the larger community (4,094 stars) or its GPL-3.0 licence terms. Choose MerossIot if its feature set, stack or MIT licence fits better. Both are self-hostable.