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64 stars written in C
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Cross-platform asynchronous I/O

C 25,289 3,695 Updated May 21, 2025

Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP…

C 23,276 4,915 Updated May 22, 2025

Flipper Zero firmware source code

C 14,244 2,973 Updated May 20, 2025

Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.

C 12,146 7,385 Updated May 22, 2025

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

C 11,368 1,904 Updated May 23, 2025

minimal cross-platform standalone C headers

C 8,249 562 Updated May 22, 2025

"Das U-Boot" Source Tree

C 4,445 3,922 Updated May 22, 2025

A Modbus library for Linux, Mac OS, FreeBSD and Windows

C 3,748 1,833 Updated Oct 22, 2024

fake keyboard/mouse input, window management, and more

C 3,480 325 Updated Jan 11, 2025

LK embedded kernel

C 3,349 675 Updated May 7, 2025

Advanced firmware to add native Apple HomeKit and custom configurations, compatible with any SoC based on ESP32, ESP32-S, ESP32-C and ESP8266 series. (Shelly, Sonoff, Electrodragon, Tuya...)

C 2,856 363 Updated Apr 22, 2025

ZSWatch - the Open Source Zephyr™ based Smartwatch, including both HW and FW.

C 2,759 242 Updated May 16, 2025

Mongoose OS - an IoT Firmware Development Framework. Supported microcontrollers: ESP32, ESP8266, CC3220, CC3200, STM32F4, STM32L4, STM32F7. Amazon AWS IoT, Microsoft Azure, Google IoT Core integrat…

C 2,569 436 Updated May 22, 2025

Adafruit GFX graphics core Arduino library, this is the 'core' class that all our other graphics libraries derive from

C 2,541 1,580 Updated Apr 22, 2025

Common libraries and data structures for C.

C 2,478 281 Updated Feb 15, 2025

S - 哈工大《操作系统》实验

C 2,216 584 Updated Jun 11, 2022

Official OpenOCD Read-Only Mirror (no pull requests)

C 1,885 849 Updated May 17, 2025

Add master mode to FreeModbus. | 在 FreeModbus 中添加主机模式

C 1,742 853 Updated Dec 14, 2022

CherryUSB is a tiny and beautiful, high performace and portable USB host and device stack for embedded system with USB IP

C 1,535 329 Updated May 20, 2025

CMSIS Version 5 Development Repository

C 1,449 1,092 Updated Sep 3, 2024

data compression library for embedded/real-time systems

C 1,412 198 Updated May 19, 2024

Modular and configurable OS for embedded applications

C 1,383 305 Updated May 22, 2025

CMake for stm32 developing.

C 1,258 347 Updated Jul 12, 2024

Very Tiny Palmtop Vector Network Analyzer

C 1,171 330 Updated Nov 11, 2020

Lightweight generic ring buffer manager library

C 1,074 265 Updated Mar 30, 2025

Low-cost LS/FS/HS USB sniffer with Wireshark interface

C 986 118 Updated Mar 6, 2025

µC/OS-III is a preemptive, highly portable, and scalable real-time kernel. Designed for ease of use on a huge number of CPU architectures.

C 957 328 Updated May 16, 2024

A set of 3D-printed headphones, alongside a DAC/amp/EQ board powered by a Raspberry Pico.

C 956 51 Updated Nov 29, 2023

BSD licensed MODBUS RTU/ASCII and TCP slave

C 846 428 Updated Aug 21, 2023

gs_usb compatible firmware for candleLight, cantact and canable

C 749 321 Updated Apr 28, 2025
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