Oracle Solaris is the #1 enterprise OS, delivering breakthrough high-availability, security, efficiency, and industry-leading scalability/performance.

PureDarwin is described as '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' and is a operating system in the os & utilities category. There are more than 100 alternatives to PureDarwin for a variety of platforms, including Linux, Self-Hosted, BSD, Windows and Mac apps. The best PureDarwin alternative is Linux Mint, which is both free and Open Source. Other great apps like PureDarwin are Debian, Fedora, Arch Linux and Linux kernel.
Oracle Solaris is the #1 enterprise OS, delivering breakthrough high-availability, security, efficiency, and industry-leading scalability/performance.

Serenity is a graphical 32-bit Unix-like operating system with 90s aesthetics and built for x86 systems.




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.






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




Desktop system for creators with focus on simplicity, elegance, and usability. Based on FreeBSD. Less, but better!
ArchBang is a simple GNU/Linux rolling release distribution which provides you with a lightweight Arch Linux system combined with the Openbox Window Manager.

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 .




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.
Nanos is a new kernel designed to run one and only one application in a virtualized environment. It has several constraints on it compared to a general purpose operating system such as Windows or Linux - namely it's a single process system with no support for running...
