78 / xiaozhi-esp32

An ESP32 firmware project for a voice chatbot that connects to LLM backends and supports MCP-based device and cloud tool control.

geo-tp / ESP32-Bit-Pirate

Open-source ESP32 firmware that turns a board into a multi-protocol hardware hacking tool with a serial or web-based CLI.

samhenrigold / LightTouchMac

Runs classic iPhone, iPod touch and iPad firmware (iPhone OS 1 to iOS 7) in an emulator on macOS.

Atmosphere-NX / Atmosphere

Custom firmware for the Nintendo Switch that replaces and modifies several layers of the console's boot and system software.

arendst / Tasmota

Alternative open-source firmware for ESP8266 and ESP32 devices, configurable via web UI and controllable locally over MQTT, HTTP, Serial or KNX.

esphome / esphome

Generates firmware for ESP32, ESP8266, RP2040 and similar microcontrollers from YAML configuration files, integrating with Home Assistant.

themactep / thingino-firmware

Open-source firmware for Ingenic SoC IP cameras, built as a Buildroot external tree.

ExpressLRS / ExpressLRS

Open source LoRa-based radio control link firmware for FPV drones and RC vehicles, running on ESP and STM32 hardware.

qmk / qmk_firmware

Open-source firmware for custom keyboard controllers, supporting AVR and Arm USB microcontrollers and many keyboard designs.

RibShark / OmniDrive

Firmware modification for MediaTek MT1959-based Hitachi-LG optical drives that enables lead-in/lead-out and raw sector reading of discs.

armbian / build

Build framework that compiles custom Armbian Linux OS images for ARM single-board computers from source.

bitdump / BLHeli

Open-source assembly firmware for sensorless brushless motor speed controllers (ESCs) on Atmel and Silabs 8-bit MCUs.