Apps similar to OpenBSD include Linux Mint, which is free and open source. Other options are Ubuntu, Debian, Fedora and Arch Linux. You're spoiled for choice with Operating Systems like OpenBSD: we list more than 100 alternatives for Linux, self-hosting, Mac, Windows and Chrome OS.
Chromium OS is an open-source project, used primarily by developers, that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web.
Kaisen Linux is a distribution for IT professional based on the Debian GNU/Linux distribution. It is a complete operating system whose originality is to provide a set of tools dedicated to system administration and covering all the needs for diagnosing and dealing with faults or...
Software for humans of indeterminate age. We don't know how old you are. We don't want to know. We are legally required to ask. We won't.
United States
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
Knoppix is an operating system based on Debian designed to be run directly from a CD / DVD (Live CD) or a USB key (Live USB), one of the first of its kind for any operating system. When starting a program, it is loaded from the removable medium and decompressed into a RAM drive.
AnduinOS is a custom Ubuntu-based Linux distribution that aims to facilitate developers transitioning from Windows to Linux by maintaining familiar operational habits and workflows.
China
HP-UX is Hewlett Packard Enterprise's proprietary implementation of the Unix operating system, based on UNIX System V (initially System III) and first released in 1984. Recent versions support the HP 9000 series of computer systems, based on the PA-RISC instruction set...
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.
OpenIndiana is a robust enterprise operating system, based on the illumos kernel. It is open source, free to use, community developed, and suitable for servers and desktops.
DragonFly belongs to the same class of operating systems as other BSD-derived systems and Linux. It is based on the same UNIX ideals and APIs and shares ancestor code with other BSD operating systems. DragonFly provides an opportunity for the BSD base to grow in an entirely...
CrunchBang++ is an open source and completely free [of cost (#!++ does include several of Debian’s non-free packages as well as the non-free repository)] computer operating system, designed as a continuation of the .
Germany
France
