Top Alternatives to Haiku

Linux Mint is a Linux based free operating system.

Arch Linux is an open source operating system based on Linux kernel.

macOS is an operating system developed by Apple.

Fedora is an operating system based on the Linux kernel.

openSUSE formerly SUSE Linux and SuSE Linux Professional, is a Linux-based project and distribution sponsored by SUSE Linux GmbH and other companies.

Windows 10 is a personal computer operating system developed and released by Microsoft as part of the Windows NT family of operating systems.

ReactOS is a free and open-source operating system for x86/x64 personal computers intended to be binary-compatible with computer programs and devices.

FreeBSD is an operating system for a variety of platforms which focuses on features, speed, and stability.

Kubuntu is an official flavour of the Ubuntu operating system which uses the KDE Plasma Desktop instead of the Unity graphical environment.

Gentoo Linux is an computer operating system distribution

Manjaro Linux or simply Manjaro, is a Linux distribution based on Arch Linux. Manjaro Linux is based on the rolling release update model similar to that of Arch Linux and uses Pacman as its package manager.

Red Hat Linux, assembled by the company Red Hat, was a widely used Linux distribution until its discontinuation in 2004.

Puppy Linux is an operating system and lightweight Linux distribution that focuses on ease of use and minimal memory footprint.

TrueOS (PC-BSD or PCBSD), is a Unix-like, desktop-oriented operating system built upon the most recent releases of FreeBSD-CURRENT.

Raspbian is a Debian-based computer operating system for Raspberry Pi.

OpenBSD is a free and open source Unix-like computer operating system descended from Berkeley Software Distribution (BSD).

Ubuntu MATE is a free and open-source Linux distribution and an official derivative of Ubuntu.

Slackware is a Linux distribution originally based on Softlanding Linux System.

Bodhi Linux is a lightweight Linux distribution based on Ubuntu that uses the Moksha window manager.

SliTaz GNU/Linux is a lightweight GNU/Linux distribution, community-based, suitable for use on older hardware and as a Live CD or Live USB.

Qubes OS is a security-focused desktop operating system that aims to provide security through isolation.

Slax is a LiveCD Linux distribution based on Slackware.

Ubuntu Server brings economic and technical scalability to your datacentre, public or private. Whether you want to deploy an OpenStack cloud, a Hadoop cluster or a 50,000-node render farm, Ubuntu Server delivers the best value scale-out performance available.

Solus is an operating system that is designed for home computing.

ArchBang Linux is a simple lightweight rolling release Linux distribution based on a minimal Arch Linux operating system with the Openbox window manager.

KDE neon is a rapidly updated software repository.

Alpine Linux is a Linux distribution based on musl and BusyBox, primarily designed for "power users who appreciate security, simplicity and resource efficiency".

NixOS is a Linux distribution built on top of the Nix package manager.