MINIX 3 is described as 'MINIX is a POSIX-compliant Unix-like operating system based on a tiny microkernel running in kernel mode with the rest of the operating system running as a number of isolated, protected, processes in user mode' and is a operating system in the education & reference category. There are more than 100 alternatives to MINIX 3 for a variety of platforms, including Linux, BSD, Self-Hosted, Mac and Windows apps. The best MINIX 3 alternative is Linux Mint, which is both free and Open Source. Other great apps like MINIX 3 are Ubuntu, Debian, Fedora and Arch Linux.
The leading platform for scale-out computing, Ubuntu Server helps you make the most of your infrastructure. 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.
United Kingdom
India
SparkyLinux is a Debian-based Linux distribution which provides ready to use, out of the box operating system with a set of slightly customized lightweight desktops.
ALT Linux is a set of RPM-based, APT-managed operating systems built on top of the Linux kernel and Sisyphus package repository branches. ALT Linux Rescue is, well, the disaster recovery tool.
Russia
100% Fedora-compatible Linux distribution with stable updates, open-source packages, out-of-the-box tweaks, and enhanced setup for developers and everyday users, streamlining software creation, packaging, and immediate usability across all experience levels.
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.
Endless OS is a Linux-based operating system which provides a simplified and streamlined user experience using a customized desktop environment forked from GNOME 3. Rather than using a traditional Linux package management system, Endless OS uses a read-only root file system...
United States
antiX is a fast, lightweight and easy to install systemd-free Linux live CD distribution based on Debian Stable for Intel-AMD x86 compatible systems.
Debian-based Linux distribution with KDE Plasma 6, SDDM, Calamares installer, and major Breeze theme modifications. GPLv3+ licensed. High RAM required for Plasma, with LXQt lite fork available for less powerful hardware and lower memory usage.
Edubuntu is an Ubuntu-based operating system that's designed for educational use in schools and other educational institutions.
United Kingdom
pearOS is a linux distribution that aims for UI and UX, offering a mac like feeling, now even on older PCs. Why hackintosh when you can pearintosh?
Romania
EU
Ubuntu Core, a minimalist rendition of Ubuntu , is a lightweight, transactionally updated operating system designed for deployments on embedded and IoT devices, cloud and more.
