head to head · open source
OpenMQTTGateway vs MerossIot
OpenMQTTGateway has 4,116 GitHub stars, 910 forks, 48 open issues and last shipped 18 days ago. MerossIot has 539 stars, 104 forks, 11 open issues and last shipped 8 months ago. OpenMQTTGateway leads on adoption by 664% (4,116 vs 539 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 | ★ 539 |
| License | GPL-3.0 | MIT |
| Written in | C++ | Python |
| Last push | 2026-10-19 | 2026-03-07 |
| Forks | ⑂ 910 | ⑂ 104 |
| 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 aims to unify various technologies and protocols into a single firmware. This reduces the need for multiple physical bridges and streamlines diverse technologies under the widely used MQTT protocol. Sponsors Documentation The documentation is here New to OpenMQTTGateway? Follow the Getting Started guide to flash a board from your browser and see your first sensor data in about 15 minutes. The reference sheet, with the list of all functions, pinouts is here Upload Upload OpenMQTTGateway directly from the upload page (no additional software required) or build your own configuration with PlatformIO…
read the full OpenMQTTGateway overview →
About MerossIot
⚠ !Attention! ⚠ Meross did change the HTTP SubDevice info API without notice. This has caused the library (versions <=0.4.10.3) to break when used with accounts handling sub devices. Please make sure to upgrade your library to v0.4.10.4 to fix the issue. Meross IoT library A pure python based library providing API for controlling Meross IoT devices over the internet. To see what devices are currently supported, checkout the Currently supported devices section. However, some devices might work as expected even if they are not listed among the supported devices. In such cases, you're invited to open an issue and…
read the full MerossIot overview →
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Frequently asked questions
Is OpenMQTTGateway or MerossIot more popular?
OpenMQTTGateway has 4,116 GitHub stars and MerossIot has 539. 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 (4,116 stars) or its GPL-3.0 licence terms. Choose MerossIot if its feature set, stack or MIT licence fits better. Both are self-hostable.