head to head · open source
oomwoo vs OpenMQTTGateway
oomwoo has 11,061 GitHub stars, 692 forks, 3 open issues and last shipped 5 days ago. OpenMQTTGateway has 4,095 stars, 906 forks, 48 open issues and last shipped yesterday. oomwoo leads on adoption by 170% (11,061 vs 4,095 stars). oomwoo is written in Python under Apache-2.0; OpenMQTTGateway is written in C++ under GPL-3.0. oomwoo has attracted 6% as many forks as stars, OpenMQTTGateway 22%. OpenMQTTGateway was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (arduino, esp32, home-assistant), 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
| oomwoo | OpenMQTTGateway | |
|---|---|---|
| GitHub stars | ★ 11K | ★ 4.1K |
| License | Apache-2.0 | GPL-3.0 |
| Written in | Python | C++ |
| Last push | 2026-09-17 | 2026-09-21 |
| Forks | ⑂ 692 | ⑂ 906 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick oomwoo if
- You weight community size — 11K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick OpenMQTTGateway if
- You want the OpenMQTTGateway feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches C++
- You evaluated both and OpenMQTTGateway fits your workflow better
About oomwoo
OOMWOO is an open source robot vacuum cleaner that you build yourself from a Raspberry Pi CM4 or CM5, 3D printed parts, Arduino and ESP32 electronics, and ROS2 software, aimed at makers and Home Assistant users who want a local, cloud free cleaning robot they can hack, repair, and extend.
read the full oomwoo overview →
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 →
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Frequently asked questions
Is oomwoo or OpenMQTTGateway more popular?
oomwoo has 11,061 GitHub stars and OpenMQTTGateway has 4,095. oomwoo has the larger community by that measure.
Are oomwoo and OpenMQTTGateway free?
Both are open source. oomwoo is licensed under Apache-2.0 and OpenMQTTGateway under GPL-3.0. Neither carries a licence fee.
What is the difference between oomwoo and OpenMQTTGateway?
oomwoo is written in Python and OpenMQTTGateway in C++. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, oomwoo or OpenMQTTGateway?
Choose oomwoo if you want the larger community (11,061 stars) or its Apache-2.0 licence terms. Choose OpenMQTTGateway if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.