2 ms·
Don't forget that the number 3. (Which is almost at # 2 ) has at least three OS's: http://en.wikipedia.org/wiki/Z/OS http://en.wikipedia.org/wiki/Z/OS ht
by whatusername 15y ago
Don't forget that the number 3. (Which is almost at # 2 ) has at least three OS's: http://en.wikipedia.org/wiki/Z/OS http://en.wikipedia.org/wiki/Z/OS http://en.wikipedia.org/wiki/IBM_i http://en.wikipedia.org/wiki/IBM_i http://en.wikipedia.org/wiki/AIX_operating_system http://en.wikipedia.org/wiki/AIX_operating_system
And they're all a lot more expensive than Windows.
And don't forget HP (http://en.wikipedia.org/wiki/NonStop http://en.wikipedia.org/wiki/NonStop http://en.wikipedia.org/wiki/HP_UX http://en.wikipedia.org/wiki/HP_UX ) and Oracle ( http://en.wikipedia.org/wiki/Solaris_%28operating_system%29 http://en.wikipedia.org/wiki/Solaris_%28operating_system%29 )