Five PC Operating Systems You Can Install other than windows

if you get sick of windows and  decided this is the time for  trying another operation system for your precious computer then  i would like to advice you to chose one of the following operating systems  :

1-Linux

If you want to install a non-Windows operating system on your PC and actually use it, you should probably pick Linux.

Linux is a Unix-like operating system, and there are other open-source operating systems like FreeBSD out there. FreeBSD uses a different kernel, but it uses much of the same software you’d find on a typical Linux distributions. The experience of using FreeBSD on a desktop PC will be pretty similar.

2-Mac OS X

Apple’s Mac OS X is preinstalled on Macs, but Macs are now just another type of PC with the same standard hardware inside. The only thing stopping you from installing Mac OS X on a typical PC is Apple’s license agreement and the way they limit their software.Mac OS X can run just fine on typical PCs if you can get around these restrictions.

3-Haiku

BeOS was a lightweight PC operating system ported to the Intel x86 platform in 1998, but it wasn’t able to stand up to Microsoft’s Windows. Be Inc. eventually sued Microsoft, accusing them of pressuring Hitachi and Compaq to not release BeOS hardware. Microsoft settled out of court, paying $23.5 million to Be Inc. without admitting any guilt. Be Inc. was eventually acquired by Palm Inc.

Haiku is an open-source reimplementation of BeOS that’s currently in alpha. It’s a snapshot of what might have been if Microsoft hadn’t used such ruthless business practices in the 90’s.

4-ReactOS

ReactOS is a free, open-source reimplementation of the Windows NT architecture. In other words, it’s an attempt to reimplement Windows as an open-source operating system that’s compatible with all Windows applications and drivers. ReactOS shares some code with the Wine project, which allows you to run Windows applications on Linux or Mac OS X. It’s not based on Linux — it wants to be an open-source operating system built just like Windows NT. (Modern consumer versions of Windows have been built on Windows NT since Windows XP.)

This operating system is considered alpha. Its current goal is to become compatible with Windows Server 2003, so it has a long way to go.

5-SkyOS

Unlike many of the other hobbyist operating systems here, SkyOS is proprietary and not open-source. You originally had to pay for access so you could use development versions of SkyOS on your own PC. Development on SkyOS ended in 2009, but the last beta version was made available as a free download in 2013.