head to head · open source
OpenMQTTGateway vs gpt-home
OpenMQTTGateway has 4,094 GitHub stars, 906 forks, 48 open issues and last shipped today. gpt-home has 649 stars, 68 forks, 0 open issues and last shipped 7 days ago. OpenMQTTGateway leads on adoption by 531% (4,094 vs 649 stars). OpenMQTTGateway is written in C++ under GPL-3.0; gpt-home is written in Python under GPL-3.0. OpenMQTTGateway has attracted 22% as many forks as stars, gpt-home 10%. 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.
← all 20902 open source comparisons
Side by side
| OpenMQTTGateway | gpt-home | |
|---|---|---|
| GitHub stars | ★ 4.1K | ★ 649 |
| License | GPL-3.0 | GPL-3.0 |
| Written in | C++ | Python |
| Last push | 2026-09-20 | 2026-09-13 |
| Forks | ⑂ 906 | ⑂ 68 |
| 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 gpt-home if
- You want the gpt-home feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Python
- You evaluated both and gpt-home 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 gpt-home
GPT Home is a self hosted, open source voice assistant for the home, built on a Raspberry Pi with LiteLLM and LangGraph, and aimed at people who want a conversational assistant for their house without giving a commercial cloud vendor control of the device.
read the full gpt-home overview →
More in Miscellaneous
Related comparisons
More Internet of Things (IoT) projects
Compare either of these against the rest of the Internet of Things (IoT) field.
Frequently asked questions
Is OpenMQTTGateway or gpt-home more popular?
OpenMQTTGateway has 4,094 GitHub stars and gpt-home has 649. OpenMQTTGateway has the larger community by that measure.
Are OpenMQTTGateway and gpt-home free?
Both are open source. OpenMQTTGateway is licensed under GPL-3.0 and gpt-home under GPL-3.0. Neither carries a licence fee.
What is the difference between OpenMQTTGateway and gpt-home?
OpenMQTTGateway is written in C++ and gpt-home 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 gpt-home?
Choose OpenMQTTGateway if you want the larger community (4,094 stars) or its GPL-3.0 licence terms. Choose gpt-home if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.