* [xiaozhi-esp32-server v0.9.2](https://github.com/xinnan-tech/xiaozhi-esp32-server) – Backend service for controlling ESP32 devices via MQTT, UDP, WebSocket and MCP.

* [xiaozhi-esp32-server-golang v0.5.4](https://github.com/hackers365/xiaozhi-esp32-server-golang) – Golang backend for ESP32 devices supporting WebSocket, MQTT, UDP transport and ASR/LLM/TTS features.