head to head · open source
OpenMQTTGateway vs HomeAssistant-OctopusEnergy
OpenMQTTGateway has 4,117 GitHub stars, 910 forks, 48 open issues and last shipped 17 days ago. HomeAssistant-OctopusEnergy has 1,038 stars, 122 forks, 59 open issues and last shipped 3 days ago. OpenMQTTGateway leads on adoption by 297% (4,117 vs 1,038 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 12%. HomeAssistant-OctopusEnergy 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 | 2026-10-19 | 2026-11-02 |
| Forks | ⑂ 910 | ⑂ 122 |
| 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 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 HomeAssistant-OctopusEnergy
Home Assistant Octopus Energy Home Assistant Octopus Energy Features How to install HACS Manual How to setup Docs FAQ Sponsorship Custom component built from the ground up to bring your Octopus Energy details into Home Assistant to help you towards a more energy efficient (and or cheaper) home. This integration is built against the API provided by Octopus Energy UK and has not been tested for any other countries. This integration is in no way affiliated with Octopus Energy. If you find this useful and are planning on moving to Octopus Energy, why not use my referral link? Features Below are the main features of…
read the full HomeAssistant-OctopusEnergy overview →
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Frequently asked questions
Is OpenMQTTGateway or HomeAssistant-OctopusEnergy more popular?
OpenMQTTGateway has 4,117 GitHub stars and HomeAssistant-OctopusEnergy has 1,038. 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 (4,117 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.