NixOS is described as 'GNU/Linux distribution that aims to improve the state of the art in system configuration management. In existing distributions, actions such as upgrades are dangerous: upgrading a package can cause other packages to break, upgrading an entire system is much less' and is a popular Linux Distro in the os & utilities category. There are more than 100 alternatives to NixOS for a variety of platforms, including Linux, Self-Hosted, Mac, BSD and Windows apps. The best NixOS alternative is Linux Mint, which is both free and Open Source. Other great apps like NixOS are Ubuntu, Debian, Fedora and Arch Linux.
Red Hat is the leader in development, deployment, and management of Linux and open source solutions for Internet infrastructure - ranging from embedded devices to secure Web servers. Red Hat was founded in 1994 by visionary entrepreneurs Bob Young and Marc Ewing.
Artix Linux is a fork (or continuation as an autonomous project) of the Arch-OpenRC and Manjaro-OpenRC projects. Artix Linux offers a lightweight, rolling-release operating system featuring the OpenRC init software.
The OpenBSD project produces a FREE, multi-platform 4.4BSD-based UNIX-like operating system. Our efforts emphasize portability, standardization, correctness, proactive security and integrated cryptography.
Puppy Linux is a unique family of Linux distributions meant for the home-user computers. It was originally created by Barry Kauler in 2003.
Haiku is an open-source operating system that specifically targets personal computing. Inspired by the BeOS, Haiku is fast, simple to use, easy to learn and yet very powerful.
Ubuntu Mate is a stable, easy-to-use operating system with a configurable desktop environment. Ideal for those who want the most out of their desktops, laptops and netbooks and prefer a traditional desktop metaphor.
A purely functional package manager and an advanced distribution of the GNU operating system developed by the GNU Project—which respects the freedom of computer users.
It has a better command line interface, and uses a more standard language than nix.
as already said is one of the few Linux distros that have similar concepts like functional package management, transitional updates, etc.
MX Linux is an operating system - a cooperative venture between the antiX and former MEPIS communities. It is a midweight OS that combines an elegant and efficient desktop with simple configuration, high stability and solid performance.
Solus Operating System is a Linux distribution built from scratch, exclusively for desktop systems. There is no scope-creep associated with generic platforms, and the project aims to provide a modern and focused desktop-centric solution, that is designed to keep out of the way...
Void is a general purpose operating system, based on the monolithic Linux kernel. Its package system allows you to quickly install, update and remove software; software is provided in binary packages or can be built directly from sources with the help of the XBPS source packages...
Slackware Linux is an advanced Linux operating system, designed with the twin goals of ease of use and stability as top priorities. Including the latest popular software while retaining a sense of tradition, providing simplicity and ease of use alongside flexibility and power...
Deepin is a reinterpretation to creativity and individuality. It is not only a rebirth to the system appearance, but also a brand-new upgrade to the operating experience! All of this lets deepin become the best partner of your computer.
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they both are the most prominent purely functional package managers.