



ReactOS is described as 'FOSS effort to develop a quality operating system based on the architecture of Microsoft® Windows NT family of operating systems, that is compatible with applications and drivers written for it (NT4, 2000, XP, 2003, Vista, 7)' and is a very popular operating system in the os & utilities category. There are more than 100 alternatives to ReactOS for a variety of platforms, including Linux, Self-Hosted, BSD, Windows and Mac apps. The best ReactOS alternative is Linux Mint, which is both free and Open Source. Other great apps like ReactOS are Fedora, Arch Linux, Manjaro Linux and Proton.




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.

Visopsys (VISual OPerating SYStem) is an alternative operating system for PC-compatible computers, written “from scratch”, and developed primarily by a single hobbyist programmer since 1997.




Helal Linux is an Islamic Arabic Linux distribution based on Ubuntu. Helal Linux features most important packages which means to Muslim user built-in, in addition to software developed by Helal Team, and a lot to discover.




Karoshi provides a simple graphical interface that allows for quick installation, setup and maintenance of a network.



Live bootable linux CD supported by US department of defense, featuring firefox, thunderbird, word processor, and reads USB flash drives.

AmigaOS is the proprietary native operating system of the Amiga and AmigaOne personal computers, introduced with the launch of the first Amiga, the Amiga 1000, in 1985.






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.



AriOS is an easy-to-use operating system based on Ubuntu. AriOS comes with a unique and optimized interface as well as many extra applications, multimedia codecs, flash and java plugins, and many tweaks! AriOS is not just Ubuntu+extra programs. It has been carefully desig.




A new OS/2-based operating system from Arca Noae, codenamed Blue Lion, arrived today, May 15, 2017, after nearly two years in development.
