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mfsBSD: A set of scripts that generates a bootable
working minimal installation of FreeBSD
MidnightBSD: A BSD-derived operating system
developed with desktop users in mind
MirBSD: A niche operating system based on
4.4BSD-Lite
NanoBSD: A tool that creates
a FreeBSD system image for embedded applications, USB keys, memory cards or
other mass storage media
NetBSD: A free, fast, secure, and highly portable
Unix-like Open Source operating system
NomadBSD: A persistent live system for USB flash
drives, based on FreeBSD with automatic hardware detection and setup
OpenBSD: A FREE, multi-platform 4.4BSD-based UNIX-like
operating system
ravynOS: A FreeBSD-based OS project that aims to
provide source and binary compatibility with macOS on x86-64
smolBSD: A tiny BSD UNIX (NetBSD) system creation
tool, primarily aimed at building modern, lightweight, fast micro VMs
Illumos
Helios: A distribution of illumos
powering the Oxide Rack
OmniOS Community Edition: An illumos based server OS
with ZFS, Bhyve, DTrace, Crossbow, SMF and Linux zone support
OpenIndiana: A community supported illumos-based
operating system
Tribblix: An open source operating system based on
illumos that blends retro style with modern components
Linux
Adélie Linux: An independent Libre operating
system based on the Linux kernel and musl runtime library
AerynOS: A modern, innovative, and forward-thinking
Linux distribution
Algiz Linux: A
high-performance, security-focused meta-distribution of Artix Linux
Alice Linux: A minimal distro that
uses musl libc, busybox as main core utilities, a package manager written in
POSIX shell script and Wayland as the only gui server
Alpaquita Linux: A Linux OS designed
for containers and cloud environments, that offers a secure, minimal base image
that meets the stringent requirements of a secure software supply chain
Alpine Linux: A security-oriented, lightweight
Linux distribution based on musl libc and busybox
Alpine-S6: MultiArch Alpine Linux +
S6 Init System
antiX: A fast, lightweight and easy to install
systemd-free and elogind-free linux live CD distribution based on Debian Stable
for Intel-AMD x86 compatible systems
Arachsys Linux: An
opinionated 'from scratch' Linux distribution based on musl libc
Bedrock Linux: A meta Linux distribution that
allows users to mix-and-match components from other, typically incompatible
distributions and integrates these components into one largely cohesive system
bootstrap-initrd: A small
development environment based on tcc+musl capable of building a minimalist
distro with the least amount of binaries involved
Buildroot: A simple, efficient and easy-to-use tool
to generate embedded Linux systems through cross-compilation
Carbs Linux: An independent source-based Linux®
distribution that aims to be simple, flexible and extensible while staying as
pragmatic and practical as possible
Chimera Linux: A modern general-purpose Linux
distribution born from unhappiness with the status quo
Copacabana Linux: An independent
Linux® distribution focused on sanity, modularity and liberty based on musl as
the C standard library and Heirloom NG as UNIX®-compatible basic command line
utilities
Crosstool-NG: A versatile (cross) toolchain
generator
crosware: Tools, things, stuff,
miscellaneous, detritus, junk, etc., primarily for Chrome OS / Chromium OS
CRUX: A lightweight Linux distribution for the x86-64
architecture targeted at experienced Linux users
Damn Small Linux (DSL): A compact Linux
distribution tailored for low-spec x86 computers
dérive: A simple x86-64 linux distribution based
on musl libc and sbase/ubase
distri: A Linux distribution to research fast package
management
Eltanin OS: A free, simple, and complete
general-purpose operating system
Embedded Linux Wiki: Preserve and present information
about the development and use of Linux in embedded systems as well as open
source projects and tools for general embedded development
eweOS: A musl-based, lightweight, general-purpose
Linux distribution, that adopts musl libc and busybox to the latest versions of
software with a rolling-release model
Fatdog64: A small yet versatile
64-bit multi-user Linux distribution
finix: An experimental os,
featuring finit as pid 1, to explore the NixOS design space
Gaming Linux From Scratch (GLFS): A
book that introduces and guides the reader through additions to the system like
Steam, Wine, and their dependencies after the LFS book or the LFS Multilib book
on x86-64 systems
Gary OS: An entire GNU/Linux
system in a single bootable file
Gentoo Linux: A highly flexible, source-based Linux
distribution
Glacies: An operating
system composed of the Eltanin userland and the Linux® kernel
glaucus: An opinionated Linux® distribution based
on musl libc and toybox
gnuinos: A libre spin of Devuan GNU/Linux (a fork of
Debian without systemd), allowing users to get control over their computer and
ensuring Init Freedom
GoboLinux: An alternative Linux distribution that
redefines the entire filesystem hierarchy
Hadron: A minimal, upstream-aligned Linux
distribution built from scratch with musl, systemd, vanilla kernels and no
package manager designed for predictable cloud and edge environments
Heads: A minimal Linux that runs as a coreboot
or LinuxBoot ROM payload to provide a secure, flexible boot environment for
laptops, workstations and servers
HeliumOS: An atomic desktop operating system for
your devices
Hyperbola: An independent, fully free and libre,
stable, secure, simple and lightweight system built from scratch using the
package-management from Arch GNU/Linux and patchsets from Debian with a final
goal to provide a full new BSD descendant operating-system named HyperbolaBSD
Iglunix: A Linux distribution with no GNU software
Joborun Linux: Arch as it was meant
to be, simple, fast, secure, cutting edge - with runit and without systemd
KISS Linux Community: A meta-distribution
created by Dylan Araps, featuring the kiss package manager that makes it easy to
maintain your own system
KRAK3N: A minimal Linux distribution based on musl libc,
Clang/LLVM and BusyBox
Kreato Linux: An independent Linux(R)
distribution focused on modularity, simplicity and code readability, inspired
from projects such as KISS, Gentoo and Arch Linux
Kwort: A minimalist and fast Linux distribution based
on CRUX
LangitKetujuh: A GNU/Linux distribution with
glibc and musl libc based on VoidLinux, using runit init and KDE desktop
environment
lh-bootstrap: A set of scripts
that build a disk image for a virtual machine such as QEMU using Linux, musl,
BusyBox and skarnet.org tools
LiGurOS: A source based distribution building
upon code and packages from a broad family of Gentoo-based distributions
Lilblue: A
security-enhanced, fully featured XFCE4 desktop, amd64 Gentoo system, built with
uClibc as its C standard library
Linaro: Together with ARM, Linaro co-maintains the
ARM software ecosystem, providing the tools, security and Linux kernel quality
needed for a solid base to differentiate on
Linux From Scratch (LFS): A project that
provides step-by-step instructions for building a custom Linux system, entirely
from source code
mfsLinux: A minimalist in-memory diskless Linux
distribution based on OpenWrt
Milis Linux: A Linux kernel based operating
system project that was developed by making use of LFS and has its own unique
package building and management system
mimicOS: A desktop/workstation Linux-based
operating system that uses Zig as the default C-compiler toolchain and musl libc
by default
mkroot: A simple Linux
build based on toybox, bootable under qemu for multiple architectures
MocaccinoOS: A minimal Musl-based Linux From Scratch
meta-distribution for the 21st century
PortaLinux: A collection
of utilities, libraries and build scripts created with the purpose of making
embedded Linux distributions with GUI and TUI capabilities that take up at most
10MiB of storage and 64MiB of RAM
postmarketOS: A touch-optimized, pre-configured
Alpine Linux with own packages, that can be installed on smartphones
s6-overlay: An s6 overlay for
containers (includes execline, s6-linux-utils & a custom init)
Sabotage: An experimental linux
distribution based on musl libc and busybox
solyste: [s]illy, [o]dd and [l]ightweight
[y]pnose's [st]atic [e]nvironment
stal/IX: A statically linked, source based,
bootstrapped rolling Linux, based on IX package manager, clang and musl
Suckless From Scratch (SFS): A true
suckless, linux based system from scratch, inspired by the ideas and concept
behind the 'Linux From Scratch' project
T2: A low-code, ultra portable package manager that
allows the fully automated, reproducable, cross compilation of custom Operating
Systems using up-to-date packages
Tin Can Linux: An independent hobby
distribution, scrapped together with hidden gems from the Linux community, with
the goal of being compact, understandable, hackable, and easy to maintain
UmVirt LFS (ULFS): A free, source code based,
transparent & autonomous GNU/Linux distribution
Vanilla Dpup: A lightweight, frugal,
portable and flexible community-built operating system based on Puppy Linux
and Debian
Venom GNU/Linux: A lightweight source based
distro for advanced Linux users
Void Linux: A general purpose operating system,
based on the monolithic Linux® kernel
Yocto Project: An open source collaboration
project that helps developers create custom Linux-based systems regardless of
the hardware architecture
Yoe: An Embedded Linux Distribution built on Yocto
and OpenEmbedded with a focus on simplicity
Custom
Aero: A new modern,
experimental, unix-like operating system inspired by the Linux kernel
ArceOS: An experimental modular
operating system written in Rust and aims to be compatible with Linux apps
AROS: A lightweight, efficient, and flexible
desktop operating system compatible with AmigaOS at the API level
Asterinas: A secure, fast, and general-purpose
OS kernel written in Rust and compatible with Linux
cavOS: An x86-64 POSIX-compliant
operating system in C, that uses the Linux system call layer, Limine bootloader,
musl libc and the apk package manager from Alpine
dahliaOS: A modern, secure, lightweight and responsive
operating system, combining the best of GNU/Linux and Fuchsia OS
DragonOS: An operating system developed from scratch
using Rust, with Linux compatibility
ExectOS: An open-source, general purpose operating
system that aims to be modular, maintainable and compatible with existing
software
FiwixOS: An operating system based on the Fiwix
kernel, GNU toolchain, libraries and additional software that uses Newlib as
its standard C library and Ext2 as its primary file system focused on being
Linux-i386 compatible
FrameOS: An operating system for single function smart
frames
Fusion OS: A hobby operating system for
x86-64 implemented in Nim
Ghost: A hobbyist operating system for the Intel
x86 platform written in C/C++ and assembly
Ginger OS: A hobby
operating systems that aims to be fully POSIX compliant with partial Linux
compatibility
Gloire: An OS built with the Ironclad
kernel using GNU tools for the userland
Haiku: An open-source operating system that targets
personal computing inspired by BeOS
HelenOS: A portable microkernel-based multiserver
operating system designed and implemented from scratch
Hobby OS: A modern 64-bit UEFI-based
UNIX-like operating system that aims to match the Linux syscall ABI, use musl
libc for the standard library and the busybox toolset
Hyra: An experimental operating system
inspired by BSD and Plan 9
L4Re: An open source, micro-kernel based operating system
and hypervisor
Maestro: A lightweight,
Linux-compatible kernel, written in Rust
managarm: A pragmatic
microkernel-based OS with fully asynchronous I/O
Menix: A modular Unix-like 64-bit kernel written in
Rust that aims to provide a familiar POSIX/Linux-like user interface
midipix: A development environment that lets you
create programs for Windows using the standard C and POSIX APIs
moss: A Unix-like,
Linux-compatible kernel written in Rust and Aarch64 assembly
octox: A Unix-like operating system inspired
by xv6-riscv. octox loosely follows the structure and style of xv6, but is
implemented in pure Rust
os-test: A set of test suites for POSIX
operating systems designed to make it easy to compare differences between
operating systems and find bugs
ReactOS: A free Windows-compatible operating system
Redox OS: A Unix-like microkernel-based operating
system written in Rust that offers source compatibility and is intended to be a
complete alternative to Linux and BSD
Sculpt OS: An open-source
general-purpose OS that combines Genode's microkernel architecture,
capability-based security, sandboxed device drivers, and virtual machines
SerenityOS: A graphical Unix-like operating system
for 64-bit x86, ARM, and RISC-V desktop computers
skiftOS: A hobbyist operating system built from the
ground up with a focus on modularity, simplicity, and modern design principles
Sortix: A small self-hosting Unix-like operating system
aiming to be a clean and modern POSIX implementation
Starina: A general-purpose,
microkernel-based, modern operating system that provides a lightweight VM based
Linux compatibility library with an ergonomic API
Business Card Linux:
A Buildroot distribution small enough to run on a business card
Clear Linux OS: An open source, rolling release
Linux distribution optimized for performance and security, from the Cloud to the
Edge, designed for customization, and manageability
CloverOS: A minimal (middleware-free)
and default out-of-the-box Gentoo image (stage4) and a performance-optimized
packages repo (Binhost)
CoolRune: A high-performance,
security-focused meta-distribution of Artix Linux
Cross-Compiled Linux From Scratch (CLFS): A
project that provides you with step-by-step instructions for building your own
customized Linux system entirely from source
Cucumber Linux: An independent distribution that
is usable as an every day, general purpose operating system in a minimalistic
way that follows the Unix Philosophy
Debian From Scratch: An instruction
manual for teaching Linux From Scratch users how to make a fully-fledged Debian
system based on LFS
Diverse Linux: A spin of
Exherbo Linux that provides a set of opinionated defaults, lightweight and/or
performant alternatives, binary packages and pre-installed utilities
Dragora: An independent GNU/Linux distribution, based
on the concepts of simplicity and elegance, designed from scratch to provide a
system composed only by free software
Eclectic Linux: A new mixed
distribution based on Exherbo Linux
EERIE Linux: An
experimental distribution built with an alternative C Library called musl, and
also comes with the package manager pacman and generally tries to be very close
to Arch Linux
ELLCC: A
project using clang and the LLVM compiler infrastructure
Funtoo Linux: A community-developed Linux
meta-distribution and evolution of Gentoo Linux
Little Blue Linux (LBL): A basic but
usable GNU/Linux operating system distribution that includes all the programs
needed to rebuild itself from source code
Lunaris: A Linux distribution with more
of a commercial Unix (SysV) feel using clang and musl
Mage GNU/Linux: An experimental GNU/Linux
distribution aiming at being simple and easy
make-rootfs: A set of make recipes to bootstrap static musl / llvm based filesystem image
Mastodon Linux: A Linux
distribution that features a primarily BSD Unix userland, a completely a.out
set of systems programs (to avoid glibc backwards incompatability), and a lot of
experimental things
Mere Linux: A lightweight Linux distribution built
around musl libc, pacman and s6
MesaLock Linux: A
memory-safe Linux distribution where the whole user space applications are
rewritten in memory-safe programming languages like Rust and Go
Muslpi: CLFS (Cross Linux From Scratch)
build system for raspberry pi using the musl libc
Mutiny:
A BSD-inspired Linux system and research project aiming to be a testbed for
interesting system design, forward thinking design choices, minimalism, and
fun computing
natickOS: A research Linux
Distribution based on the latest Linux Kernel, the BusyBox userland, and the
musl C library
Non-GNU ToolChain (NGTC): A toolchain that
can build the Linux kernel, a minimal userspace (e.g. nenuzhnix) and ultimately
itself without using any GNU software
rc-user: A user s6-rc hierarchy meant for
use with rc
rlsd2: A small, "live" operating system with
GNU/Linux-libre, for the x86 and x86-64 architectures
rv8.io: A RISC-V simulation suite
comprising a high performance x86-64 binary translator, a user mode simulator, a
full system emulator, an ELF binary analysis tool and ISA metadata
Serpent OS: A modern Linux distribution using atomic
updates, cutting-edge tooling and rock-solid reliability
Spark: An Arch Linux meta-distro
with systemd swapped out for other solutions
Spider Linux: A
work-in-progress, modern, independent, free and open-source Linux distribution
SSD/Linux:
The SSD Linux operating system, that straps NetBSD userland functions onto the
Linux kernel
StarLinux: A Linux Distribution
(rewritten from MLL) that can be build directly on the Host Machine
static linux (stali): A static linux distribution based on
the original pre-2010 plans of the suckless.org project, however since 2018 it
became independent from suckless.org and is maintained by Anselm solely
StelaLinux: A research Linux
Distribution built with the Linux Kernel, musl C Library, the BusyBox Userland,
and a custom init script
SulinOS: An independent linux distro project
that does not use systemd
superBoxon:
A GNU/Linux distribution based on the Slackware 64 current with a simple and
human friendly BSD like init system
swerve: A suckless-inspired Unix-like
monolithic kernel originally designed for i386 machines
TeoraLinux:
An experimental Linux Distribution with Musl, BusyBox, and Java