NetBSD is a free, fast, secure, and highly portable Unix-like Open Source operating system. It is available for a wide range of platforms, from large-scale servers and powerful desktop systems to handheld and embedded devices.

HardenedBSD is described as 'Founded in 2014 by Oliver Pinter and Shawn Webb, HardenedBSD is a security-enhanced fork of FreeBSD. The HardenedBSD Project is implementing many exploit mitigation and security technologies on top of FreeBSD' and is a operating system in the os & utilities category. There are more than 100 alternatives to HardenedBSD for a variety of platforms, including Linux, Self-Hosted, BSD, Mac and Windows apps. The best HardenedBSD alternative is Tails, which is both free and Open Source. Other great apps like HardenedBSD are Zorin OS, Windows 10, Xubuntu and Haiku.
NetBSD is a free, fast, secure, and highly portable Unix-like Open Source operating system. It is available for a wide range of platforms, from large-scale servers and powerful desktop systems to handheld and embedded devices.







A Fast, friendly, open-source operating system, for newbies, geeks & DIY enthusiasts.




Bedrock Linux is a meta Linux distribution which allows users to utilize features from other, typically mutually exclusive distributions. Essentially, users can mix-and-match components as desired. For example, one could have:
The AROS Research Operating System is a lightweight, efficient, and flexible desktop operating system, designed to help you make the most of your computer. It's an independent, portable and free project, aiming at being compatible with AmigaOS at the API level (like Wine...




ArchBang is a simple GNU/Linux rolling release distribution which provides you with a lightweight Arch Linux system combined with the Openbox Window Manager.

Linux From Scratch (LFS) is a project that provides you with the steps necessary to build your own custom Linux system. There are a lot of reasons why somebody would want to install an LFS system. The question most people raise is "why go through all the hassle of manually...
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.
illumos is the most popular Mac alternative to HardenedBSD.
A project providing a fully free (as in freedom) derivative of Arch Linux. Inheriting Arch's lightweight and flexibility, Parabola offers software freedom plus all power to the users.



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.



