The source for the Linux kernel used in Windows Subsystem for Linux 2
Boots into many systems and GRUB2 ones!
Easy, yet powerful, GNU/Linux distribution
amforth is an extendible interpreter on microcontrollers
A light version of Debian with minimal installed using LXDE.
An ADL-mode rewrite of the ez80 CP/M 3.1 port
GaryOS is an entire GNU/Linux system in a single bootable file
IIoT Gateway for interfacing industrial,home automation applications
Hobby operating system, bootloader, kernel, drivers, C library
freeRTOS for Arduino Uno, Goldilocks 1284p & Mega 2560
A microkernel-based multiserver operating system written from scratch.
Portable Penetration Testing Operating System
Debian 11 Bullseye+dwm 6.2
The first OpenSolaris based distro (since June 2005)
The OpenSolaris source base (OpenSolaris-ONNV) maintained version
Message passing microkernel-based Operating System for ZX Spectrum +3e
x86-64 os made in crystal