OpenBSD is described as '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' and is a popular operating system in the security & privacy category. There are more than 100 alternatives to OpenBSD for a variety of platforms, including Linux, Self-Hosted, BSD, Mac and Windows apps. The best OpenBSD alternative is Linux Mint, which is both free and Open Source. Other great apps like OpenBSD are Ubuntu, Debian, Fedora and Arch Linux.
Ubuntu Kylin is an official Ubuntu subproject whose goal is to create a variant of Ubuntu that is more suitable for Chinese users using the Simplified Chinese writing system.
China
A privacy-focused, AI-ready Debian system featuring the shadow and gold Umbra theme, KDE Plasma 6, preinstalled creative, audio, and 3D tools, agent workspaces for secure local AI, robust updates and recovery controls, browser migration, and strong local-first security.
United States
Ubuntu Budgie (previously budgie-remix) is an Ubuntu-based distribution featuring the Budgie desktop, originally developed by the Solus project. Written from scratch and integrating tightly with GNOME stack, Budgie focuses on simplicity and...
Debian-based Linux OS emphasizing beauty and efficiency. Uses KDE Plasma 5, AppImages, and OpenRC instead of systemd. Integrated with Maui Apps and Liquorix kernel for high responsiveness. Includes Firefox, NX Software Center, comprehensive app suite, and hardware probing.
Mexico
Vinix is an effort to write a modern, fast, and useful operating system in the V programming language.
Lithuania
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.
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.
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
NixBSD is an attempt to make a reproducible and declarable BSD, based on NixOS. Although theoretically much of this work could be copied to build other BSDs, all work thus far has been focused on building a FreeBSD distribution.
illumos is a free and open-source Unix operating system. It derives from OpenSolaris, which in turn derives from SVR4 UNIX and Berkeley Software Distribution (BSD). illumos comprises a kernel, device drivers, system libraries, and utility software for system administration.
Cloud-first, fast, easy-to-manage, and secure operating system for PCs and Macs. ChromeOS Flex is a sustainable way to modernize devices you already own. It’s easy to deploy across your fleet or simply try it to see what a cloud-first OS has to offer.
United States
Redox is a Unix-like Operating System written in Rust, aiming to bring the innovations of Rust to a modern microkernel and full set of applications.
United States
United Kingdom
