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This is one of the very best list of its kind where you can find out of the box operating systems that you probably never heard of and these would be great enough to bookmark or just for knowledge. I hope everyone of you will like this list, you can try these whether you are an office worker, a manager, a supervisor, a student, a home user, etc.These are really amazing in respect to their features. This is the list of 7 Operating Systems You Probably Never Heard Of. Just take a look at them and share your thought’s here.

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Slax

Slax is a modern, portable, small and fast Linux operating system with a modular approach and outstanding design. Despite its small size, Slax provides a wide collection of pre-installed software for daily use, including a well organized graphical user interface and useful recovery tools for system administrators.

openSUSE

openSUSE is a free and Linux-based operating system for your PC, Laptop or Server. You can surf the web, manage your e-mails and photos, do office work, play videos or music and have a lot of fun. It includes new versions of GNOME, KDE, OpenOffice.org, Firefox, the Linux kernel, and many more updates and improvements. In 11.2 you’ll find more than 1,000 open source desktop applications. openSUSE also includes a full suite of server software and a rich selection of open source development tools.

ReactOS

ReactOS® is a free, modern operating system based on the design of Windows® XP/2003. Written completely from scratch, it aims to follow the Windows-NT® architecture designed by Microsoft from the hardware level right through to the application level. This is not a Linux based system, and shares none of the unix architecture. In short, ReactOS is designed to be powerful and lightweight. You can think of the term “lightweight” in the good old fashion of Win95, a consistent user interface and small bundle of very common and useful tools. Although lightweight, ReactOS offers a lot in comparison to Windows 95, with an up-to-date experience as well as built from scratch on a rock solid NT core.

MonaOS

MonaOS is a free operating system. It’s new, small, simple, open source and well structured. So, MonaOS may be suitable for education of operating system and program at school.

FreeDOS

FreeDOS is a free DOS-compatible operating system for IBM-PC compatible systems. FreeDOS is made of up many different, separate programs that act as packages to the overall FreeDOS Project. FreeDOS is distributed under the GNU GPL.

MINIX 3

MINIX 3 is a new open-source operating system designed to be highly reliable, flexible, and secure. It is loosely based somewhat on previous versions of MINIX, but is fundamentally different in many key ways. MINIX 1 and 2 were intended as teaching tools; MINIX 3 adds the new goal of being usable as a serious system on resource-limited and embedded computers and for applications requiring high reliability.

Haiku

Haiku is an open source operating system currently in development that specifically targets personal computing. Inspired by the Be Operating System, Haiku aims to become a fast, efficient, simple to use, easy to learn and yet very powerful system for computer users of all levels.