Arch Linux is described as 'Independently developed, x86_64 optimized GNU/Linux distribution targeted at competent Linux users. It uses pacman, its home-grown package manager, to provide updates to the latest software applications with full dependency tracking' and is a leading Linux Distro in the os & utilities category. There are more than 100 alternatives to Arch Linux for a variety of platforms, including Linux, Self-Hosted, Windows, BSD and Mac apps. The best Arch Linux alternative is Manjaro Linux, which is both free and Open Source. Other great apps like Arch Linux are Linux Mint, Ubuntu, Debian and Fedora.
Development seems to be stopped with last version, ZevenOS 6.0 – Goodbye Edition, released in December 2014, which is still downloadable and supported till 2019.
AriOS is an easy-to-use operating system based on Ubuntu. AriOS comes with a unique and optimized interface as well as many extra applications, multimedia codecs, flash and java plugins, and many tweaks! AriOS is not just Ubuntu+extra programs. It has been carefully desig.
GuestSneezeOS is a robust, free-to-use, lightweight, immutable, operating system designed to bring the functionality of Valve's SteamOS to a wide range of devices, including desktops, laptops, and more.
ravynOS is a new open-source desktop operating system that aims to provide a similar experience and compatibility with macOS on x86-64 systems.
The CLIP OS project is an open source project maintained by the ANSSI (National Cybersecurity Agency of France) that aims to build a secure, multi-level operating system, based on the Linux kernel and a lot of free and open source software.
Athena OS is an Arch-derived Linux distribution designed for penetration testing, bug-bounty hunting and InfoSec students. The distribution provides a way to connect directly to some of the e-learning hacking resources, such as Hack The Box, Offensive Security, PWNX and InfoSec...
Xinuos OpenServer™ 10 is a 64-bit operating system based on the popular FreeBSD and designed to support business applications within an enterprise environment.
Absolute is a 64-bit Lightweight Linux distribution based upon Slackware; It concentrates on "desktop" use so that it is ready for internet, multimedia, document and general home use out of the box.
Infinitive OS is an open-source project created to replace windows and macOS, it mounts the latest versions of the Linux kernel and contains open source components but also proprietary software. It has the KDE desktop environment pre-installed
BSD-derived desktop OS designed for usability, featuring graphical ports management, GNUstep system configuration, standard tools for daily tasks including email, web browsing, and word processing, supporting multiple licenses like BSD, X.org, and GNUstep.
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You need to switch between LTS versions in order to have lastest packages. Not good for my usage. Might be good for you...