ESPHome for Shelly Gen4 devices, installed through the stock web UI.
AT application for ESP32/ESP32-C2/ESP32-C3/ESP32-C6/ESP8266
Open source Matter over Thread firmware for the Seeed Studio XIAO Soil Moisture Sensor. A Matter 1.5 soil sensor, native in Home Assistant. No ESPHome, no cloud, no WiFi.
Native RISC-V NOMMU Linux 7.2 (dual-core SMP) with SDIO Wi-Fi (ESP-Hosted-NG), Dropbear SSH and MicroPython for M5Stack Stamp-P4 + Stamp-AddOn C6