head to head · open source
OpenMQTTGateway vs HomeAssistant-OctopusEnergy
OpenMQTTGateway has 4,094 GitHub stars, 906 forks, 48 open issues and last shipped today. HomeAssistant-OctopusEnergy has 1,008 stars, 109 forks, 59 open issues and last shipped yesterday. OpenMQTTGateway leads on adoption by 306% (4,094 vs 1,008 stars). OpenMQTTGateway is written in C++ under GPL-3.0; HomeAssistant-OctopusEnergy is written in Python under MIT. OpenMQTTGateway has attracted 22% as many forks as stars, HomeAssistant-OctopusEnergy 11%. 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 | HomeAssistant-OctopusEnergy | |
|---|---|---|
| GitHub stars | ★ 4.1K | ★ 1.0K |
| License | GPL-3.0 | MIT |
| Written in | C++ | Python |
| Last push | 2026-09-20 | 2026-09-19 |
| Forks | ⑂ 906 | ⑂ 109 |
| 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 HomeAssistant-OctopusEnergy if
- You want the HomeAssistant-OctopusEnergy feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and HomeAssistant-OctopusEnergy 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 HomeAssistant-OctopusEnergy
HomeAssistant OctopusEnergy is a free, MIT licensed custom Home Assistant integration that brings Octopus Energy UK account data — electricity and gas consumption, rates, and tariff information — into a home automation system so households can monitor and automate their energy use.
read the full HomeAssistant-OctopusEnergy overview →
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Frequently asked questions
Is OpenMQTTGateway or HomeAssistant-OctopusEnergy more popular?
OpenMQTTGateway has 4,094 GitHub stars and HomeAssistant-OctopusEnergy has 1,008. OpenMQTTGateway has the larger community by that measure.
Are OpenMQTTGateway and HomeAssistant-OctopusEnergy free?
Both are open source. OpenMQTTGateway is licensed under GPL-3.0 and HomeAssistant-OctopusEnergy under MIT. Neither carries a licence fee.
What is the difference between OpenMQTTGateway and HomeAssistant-OctopusEnergy?
OpenMQTTGateway is written in C++ and HomeAssistant-OctopusEnergy 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 HomeAssistant-OctopusEnergy?
Choose OpenMQTTGateway if you want the larger community (4,094 stars) or its GPL-3.0 licence terms. Choose HomeAssistant-OctopusEnergy if its feature set, stack or MIT licence fits better. Both are self-hostable.