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50 stars written in C
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Learning operating system development using Linux kernel and Raspberry Pi

C 13,655 1,333 Updated Mar 29, 2024

Open Source Flight Controller Firmware

C 10,199 3,448 Updated Nov 7, 2025

xv6 OS

C 9,018 4,358 Updated Aug 13, 2024

low cost software radio platform

C 7,427 1,642 Updated Nov 6, 2025

A full functional WiFi Repeater (correctly: a WiFi NAT Router)

C 5,063 952 Updated Feb 13, 2025

A memory profiler for Linux.

C 4,722 198 Updated Jul 28, 2023

v4l2-loopback device

C 4,040 577 Updated Oct 15, 2025

The official git repository for Contiki, the open source OS for the Internet of Things

C 3,780 2,575 Updated Apr 6, 2024

Open source ARM Cortex-M microcontroller library

C 3,426 1,096 Updated Oct 2, 2025

Core Lightning — Lightning Network implementation focusing on spec compliance and performance

C 3,007 961 Updated Nov 7, 2025

esp8266 wifi-serial bridge, outbound TCP, and arduino/AVR/LPC/NXP programmer

C 2,950 733 Updated Jul 18, 2021

XDP tutorial

C 2,789 638 Updated Oct 27, 2025

Read-only mirror of https://review.coreboot.org/coreboot.git. Synced every hour. We don't handle Pull Requests.

C 2,492 585 Updated Nov 7, 2025

Reference implementation and documentation of a LoRa network node.

C 1,966 1,102 Updated Jul 3, 2024

Drivers for the rtl8192eu chipset for wireless adapters (D-Link DWA-131 rev E1 included!)

C 1,393 446 Updated Oct 19, 2025

A simple yet fast user space network driver for Intel 10 Gbit/s NICs written from scratch

C 1,276 136 Updated Feb 19, 2022

Build a minimal multi-tasking OS kernel for ARM from scratch

C 1,179 254 Updated Jan 5, 2022

SDK for connecting to AWS IoT from a device using embedded C.

C 1,040 642 Updated Jul 18, 2025

A pause button that pauses the unpausable. Handy for video game cut scenes especially, but can be used for any application, not just games.

C 979 41 Updated Mar 16, 2025

An OS to build, deploy and securely manage billions of devices

C 871 380 Updated Nov 7, 2025

Low-cost LoRa IoT & gateway with SX12XX (SX1261/62/68; SX1272/76/77/78/79; SX1280/81), RaspberryPI and Arduino boards

C 731 358 Updated Mar 23, 2025

user space utility to interface to kernel dropwatch facility

C 686 94 Updated Apr 29, 2025

User space mappable dma buffer device driver for Linux.

C 651 182 Updated Aug 22, 2025

A testing library for C.

C 359 22 Updated Dec 14, 2023

Mobile Station side GSM implementation; mirrored from https://gitea.osmocom.org/phone-side/osmocom-bb

C 317 141 Updated Nov 6, 2025

🔒 Don't use this repo, use the new monorepo instead:

C 316 256 Updated Apr 10, 2019

An optimized C library for math, parallel processing and data movement

C 315 112 Updated Oct 5, 2020

Firmware source files for the CANtact tool

C 271 203 Updated Jun 30, 2023

micro read line library for small and embedded devices

C 268 84 Updated Oct 29, 2023

A circular buffer written in C using Posix calls to create a contiguously mapped memory space. BSD Licensed.

C 264 42 Updated May 10, 2021
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