From the Points of View of Security or Stability or Support or Cost or Compatability etc. Linux/Unix is better than Windows.Refer the following LINKS.

http://www.bostoncomputing.net/webhosting/unix-vs-windows/

Stability:

UNIX systems (we actually use Linux but for comparison purposes they are identical) are hands-down the winner in this category. There are many factors here but to name just a couple big ones: in our experience UNIX handles high server loads better than Windows and UNIX machines seldom require reboots while Windows is constantly needing them. Servers running on UNIX enjoy extremely high up-time and high availability/reliability.

Performance:

While there is some debate about which operating system performs better, in our experience both perform comparably in low-stress conditions however UNIX servers under high load (which is what is important) are superior to Windows.

Compatibility:

Web sites designed and programmed to be served under a UNIX-based web server can easily be hosted on a Windows server, whereas the reverse is not always true. This makes programming for UNIX the better choice.

http://www.pcworld.com/article/201731/10_reasons_to_dump_windows_and_use_linux.html

Now is a particularly good time to ditch Windows for good, for workstations as well as servers. For instance, now that Microsoft stopped supporting Windows Server 2003 on July 13, you'll need to find something different to use for your servers. Whether it's switching from Windows Server 2003 to 2008 or to Linux-based servers--or changing out tired and faulty Windows Vista desktops for the alien Windows 7 or something more user-friendly--Linux provides you with freedom and freedom of choice.

1. Commercial Support 2. .NET Support 3. Unix Uptimes 4. Security

5. Transferable skills 6. Commodity hardware 7. Linux is free 8. Worldwide community 9. Linux Foundation 10. Regular Updates

P.S.

There is nothing simple about UNIX !

Windows is very nice and simple, and, security-wise, pretty good.

The reason UNIX is popular in the research community is as follows:

Back in the 70's, when Windows wasn't even a thought, Unix was a nice and working OS. It got its foot into the academic world ...

Also, the fact that, it is FREE made its place solid ...

Also, it is extremely stable. Up until the release of Windows 7, Microsoft didn't really have a product that offered the same stability ...

So, unless Microsoft significantly changes its licensing scheme for the academic world, Unix is here to stay in academia ...

Hi,

Thank you for your question. Could I ask if OS softwares are reliable - and in what limit?

@Mellah , money, money....! Windows costs a lot, while You can find different versions of UNIX OS free of charge! Many goverments made their states technologically dependent of Microsoft! Lack of money is slowly changing this situation!

I do agree with @Tolga about UNIX and ACADEMIA !

Thanks for all contributors,

I would like to read some information about the security of Microsoft OS, and also about the slowly of the connection when we use the windows and the loss of 25% of the PC performance.

From the Points of View of Security or Stability or Support or Cost or Compatability etc. Linux/Unix is better than Windows.Refer the following LINKS.

http://www.bostoncomputing.net/webhosting/unix-vs-windows/

Stability:

UNIX systems (we actually use Linux but for comparison purposes they are identical) are hands-down the winner in this category. There are many factors here but to name just a couple big ones: in our experience UNIX handles high server loads better than Windows and UNIX machines seldom require reboots while Windows is constantly needing them. Servers running on UNIX enjoy extremely high up-time and high availability/reliability.

Performance:

While there is some debate about which operating system performs better, in our experience both perform comparably in low-stress conditions however UNIX servers under high load (which is what is important) are superior to Windows.

Compatibility:

Web sites designed and programmed to be served under a UNIX-based web server can easily be hosted on a Windows server, whereas the reverse is not always true. This makes programming for UNIX the better choice.

http://www.pcworld.com/article/201731/10_reasons_to_dump_windows_and_use_linux.html

Now is a particularly good time to ditch Windows for good, for workstations as well as servers. For instance, now that Microsoft stopped supporting Windows Server 2003 on July 13, you'll need to find something different to use for your servers. Whether it's switching from Windows Server 2003 to 2008 or to Linux-based servers--or changing out tired and faulty Windows Vista desktops for the alien Windows 7 or something more user-friendly--Linux provides you with freedom and freedom of choice.

1. Commercial Support 2. .NET Support 3. Unix Uptimes 4. Security

5. Transferable skills 6. Commodity hardware 7. Linux is free 8. Worldwide community 9. Linux Foundation 10. Regular Updates

P.S.

Thanks @Pisupati Subramanyam for this information, you are welcome.

A good links about this subject :

http://wiki.answers.com/Q/What_is_the_difference_between_Windows_and_Unix

http://linux.about.com/cs/linux101/a/unix_win.htm

http://technet.microsoft.com/en-us/library/bb496993.aspx

www.ask.com/question/difference-between-unix-and-windows

www.diffen.com/difference/Linux_vs_Windows

I would simply say Windows cannot provide the security as provided by Linux due to registry system. But I donot agree with your statement that windows is simple and Linux is not simple. If you have started using Unix/Linux first you would have said otherway round. It all depends the way we perceive. If you eliminate the windows thoughts and start using linux you will find Linux best and enjoyable.

I have been working with linux since 8 years. I have all the resources required which are freely available. Where as on Windows you need to pay for everything.