Browse free open source Operating System Kernels and projects for Linux below. Use the toggles on the left to filter open source Operating System Kernels by OS, license, language, programming language, and project status.
Blazingly Fast & Customizable Linux distribution
Winux Operating System by Linuxfx
Current Release: Calam-Arch-Installer-2026-03 Kernel: 6.18.13
Yet another minimal Linux distribution, based on Arch Linux.
Boots into many systems and GRUB2 ones!
Easy, yet powerful, GNU/Linux distribution
Testsuite to validate the reliability, robustness, stability of Linux.
Market leading real time kernel for 40+ microcontroller architectures
The source for the Linux kernel used in Windows Subsystem for Linux 2
Your concierge creating a Rich experience to Arch
https://github.com/libcgroup/libcgroup
A beautiful personal server OS for Raspberry Pi or any Linux distro
Real-Time Event Frameworks based on active objects & state machines
NuTyX is a very flexible, complete GNU / Linux distribution
Free operating system for Atari computers, and more.
Runtu is a desktop Linux distribution based on Ubuntu.