Linux kernel source tree

A simple and easy-to-use library to enjoy videogames programming

MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems

Embedded graphics library to create beautiful UIs for any MCU, MPU and display type.

A free Windows-compatible Operating System

Espressif IoT Development Framework. Official development framework for Espressif SoCs.

Affordable WiFi hacking platform for testing and learning

Ultralightweight JSON parser in ANSI C

Cross-platform, sophisticated frontend for the libretro API. Licensed GPLv3.

RT-Thread is an open source IoT Real-Time Operating System (RTOS).

DPI bypass multi platform

C in four functions

Open Source Flight Controller Firmware

Lua based interactive firmware for ESP8266, ESP8285 and ESP32

An open source, embedded, high performance g-code-parser and CNC milling controller written in optimized C that will run on a straight Arduino

An open source, portable, easy to use, readable and flexible TLS library, and reference implementation of the PSA Cryptography API. Releases are on a varying cadence, typically around 3 - 6 months …

U8glib library for monochrome displays, version 2

Simple Dynamic Strings library for C

Arm Mbed OS is a platform operating system designed for the internet of things

UEFI firmware image viewer and editor

Open source STM32 MCU programming toolset

RF transmitter for Raspberry Pi

A look at inner workings of Joycon and Nintendo Switch

Open source ARM Cortex-M microcontroller library

Clean-code version of the baseflight flight controller firmware

Sample ESP32 snippets and code fragments

Hardware backdoors in some x86 CPUs

Arduino library to play MOD, WAV, FLAC, MIDI, RTTTL, MP3, and AAC files on I2S DACs or with a software emulated delta-sigma DAC on the ESP8266 and ESP32 and Pico

Espressif IoT Library. IoT Device Drivers, Documentations and Solutions.