What is best Operating system for all computers?

If you have minimum of 64 MB of RAM; use Windows 98SE and if you have minimum 128 MB of RAM use Windows XP. For Virus problems; kindly use AVG Antivirus which you can download from http://free.grisoft.com/

Mac OS X is the best operating system in my opinion; of course, you need an Apple computer to run it.

Linux is an excellent alternative for generic hardware.

The person who said "software is not available for these OSes" has no idea what they are talking about. There is a larger library of *n*x-compatible software than there is for Windows! There is not as much for gaming, that's all.

I think the best operating system is Linux.

Linux (also known as GNU/Linux) is a computer operating system which is one of the most prominent examples of free software and of open-source development; unlike proprietary operating systems such as Windows, all of its underlying source code is available to the public for anyone to freely use, modify, improve, and redistribute.

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Well Mac and linux are good. but most software does not support Mac and linux .So Try using "Xp Media Center" most software Supports XP Media Center and also use McAfee 2007 it also helps u from virus or spys . thts my TIP

Mac OS X