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.
GNU-Darwin aims to be the most free software distribution. Our mission is two-fold: Focus on projects that leverage our unique combination of Darwin and GNU, and help users to enjoy the benefits of software freedom.
Frugalware Linux is an independently developed general purpose desktop Linux distribution designed for intermediate users. It follows simple Slackware -like design concepts and includes the .
Minoca OS is a general purpose operating system designed specifically for feature-rich embedded devices. It's got all the high-level functionality that you've come to expect from an operating system, but offers it in a fraction of the memory footprint.
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BeeFree OS is inspired from Ubuntu, Windows 7 and Linux Mint. The name is acronym for Beautiful, Effective, Efficient and Freedom.
Beautiful, Open, and Free - Trenta OS is a Linux based operating system that aims to compete graphically with some well known premium operating systems but in the free & open-source Linux world.
Darwin is the Open Source operating system from Apple that forms the basis for Mac OS X, and PureDarwin is a community project to make Darwin more usable (some people think of it as the informal successor to OpenDarwin.
ZevenOS is an Ubuntu -based GNU/Linux distribution with focus on providing a fast and easy-to-use system with BeOS-like user interface and support for older hardware.
Hanthana is a Linux based operating system and a Fedora remix suitable for desktop and laptop users. Hanthana comes to you in the form of a Live CD for regular PC (i686 architecture) systems.
A libre open source Linux operating system. Focused on ease of use, simplicy, and flexibility to adapt and change.
Superb Mini Server (SMS) is a Slackware-based server distribution with web, DNS, DHCP, file, print and fax servers, iptables firewall, mail server with spam filter and anti-virus scanner, and BitTorrent station.
