November 2003 Web Server Survey

In the November 2003 survey we received responses from 44,946,965 sites.

Apache has a significant percentage gain this month as register.com, a leading domain registrar with a domain parking system serving responses for over one million domains eliminated its Windows front end, and reverted to Linux and Apache which it ran previously. Barely weeks ago its largest rival, Network Solutions made a similar switch from Microsoft-IIS back to SunOne, nee Netscape-Enterprise, for its own domain parking system.

During 2001 and the first half of 2002 several companies hosting very large numbers of hostnames including Webjump, Namezero, Homestead, register.com and Network Solutions migrated to Microsoft-IIS. Subsequently these businesses have either failed, significantly changed their business model, or reverted to their previous platform, and Microsoft-IIS share is now in line with its long term pre-summer 2001 level of around 20%.

Graph of market share for top servers across all domains, August 1995 - November 2003

Top Developers
Developer October 2003Percent November 2003Percent Change
Apache 2823597264.61 3029806067.41 2.80
Microsoft 1025222723.46 944918021.02 -2.44
SunONE 15280903.50 15252023.39 -0.11
Zeus 7351791.68 7436111.65 -0.03
DeveloperOctober 2003PercentNovember 2003PercentChange
Apache 1352422167.35 1437051568.60 1.25
Microsoft 491924724.50 491005923.44 -1.06
Zeus 2574641.28 2645081.26 -0.02
SunONE 2141841.07 2107611.01 -0.06
Totals for Active Servers Across All Domains
June 2000 - November 2003


SunONE is the sum of sites running iPlanet-Enterprise, Netscape-Enterprise, Netscape-FastTrack, Netscape-Commerce, Netscape-Communications, Netsite-Commerce & Netsite-Communications.

Microsoft is the sum of sites running Microsoft-Internet-Information-Server, Microsoft-IIS, Microsoft-IIS-W, Microsoft-PWS-95, & Microsoft-PWS.

Platform groupings are here.