Hobby operating system, bootloader, kernel, drivers, C library
NVIDIA Linux open GPU kernel module source
freeRTOS for Arduino Uno, Goldilocks 1284p & Mega 2560
Easy, yet powerful, GNU/Linux distribution
Building and running ancient Linux on Windows
ArchEX is a new (241117/240509) Linux Live System based on Arch Linux.
Low power application-configurable Operating System
amforth is an extendible interpreter on microcontrollers
Open-source RTOS and Embedded Systems Toolkit for C++ and C
PRTOS is a simple, compact preemptive RTOS for embedded systems
Mulithreading Arduno library
Small real time operating system for AVR and ARM microcontrollers
Pre-Alpha Console distro for high performance Linux computing.
Simple AVR OS