Netcraft: Web Server Operating Systems

[Warren Togami]

These counts are the Netcraft estimations of percentages web server operating systems.  They removed the many duplicate virtual hosts on same servers, and counted the servers themselves.

At first these numbers may seem disheartening, but this seems to be near the IDC estimates of roughly 24% (was it?) marketshare of Linux server shipments.  Also, Apache based platforms are serving nearly three times as many domains as Microsoft IIS.

http://apachetoday.com/news_story.php3?ltsn=2001-06-30-001-01-NW-LF-MR
Operating Systems used by Computers running public Internet Web Sites, March 2001 
            OS group Percentage Composition 
            Windows 49.2% Windows 2000, NT4, NT3, Windows 95, Windows 98 
            Linux 28.5% Linux 
            Solaris 7.6% Solaris 2, Solaris 7, Solaris 8 
            BSD 6.3% BSDI BSD/OS, FreeBSD, NetBSD, OpenBSD 
            Other Unix 2.4% AIX, Compaq Tru64, HP-UX, IRIX, SCO Unix, SunOS 4 and others 
            Other non-Unix 2.5% MacOS, NetWare, proprietary IBM OSs 
            Unknown 3.6% not identified by Netcraft operating system detector 
     


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