Free Operating System

DragonFly BSD

Thing

operating system

TrueOS

class

Unix-like, desktop-oriented operating system

AROS Research Operating System

CreativeWork

operating system

Gobuntu

Place

Linux distribution

Devuan

class

Linux distribution based on Debian without systemd init system

Ututo

Place

Linux distribution

Replicant

CreativeWork

free software version of Android

PicoBSD

Thing

operative system

Dragora GNU/Linux-libre

Place

Linux distribution

Hyperbola GNU/Linux-libre

Place

Linux distribution

GeckoLinux

class

Linux distribution, based on openSUSE

Feren OS

Place

Linux distribution

Siduction

Place

Linux distribution

Cdlinux.pl

Place

Linux distribution

Freedows OS

CreativeWork

ravynOS

CreativeWork

operating system based on FreeBSD which aims to provide source and binary compatibility with MacOS

Collapse OS

CreativeWork

free operating system

NanoBSD

Thing

Dyson

CreativeWork

free Unix operating system

Loongnix

CreativeWork

LibertyBSD

CreativeWork

free operating system based on OpenBSD

Cinux

Place

Linux distribution

Alter Linux

Place

Linux distribution

GNOME OS

Place

Linux test distribution for the GNOME Desktop environment

AmayaOS

CreativeWork

free Unix-like computer operating system

Parch Linux

Place

Arch Linux based distribution

Condres OS

Place

Linux distribution

AOSC OS

class

Linux distribution

Exodia OS

class

Linux distro based on Arch.

KnightOS

CreativeWork

open-source Unix-like operating system for calculators

ShredOS

Place

Linux operating system for disk erasure

REMnux

CreativeWork

Linux Toolkit for Malware Analysis

Nut/OS

CreativeWork

modular real-time operating system of the Ethernut project

GParted Live

class

small bootable GNU/Linux distribution based on Debian Live, includes GParted, can be installed on CD, USB, PXE server, and Hard Disk

SambaEdu

Organization

free software for education server

stali

Place

static Linux distribution

AmonEcole

class

Linux distribution