September 2003 Web Server Survey

In the September 2003 survey we received responses from 43,144,374 sites.

Market Share for Top Servers Across All Domains
August 1995 - September 2003

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

Top Developers

Developer August 2003 Percent September 2003 Percent Change
Apache 27388860 63.98 27836622 64.52 0.54
Microsoft 10165745 23.75 10156289 23.54 -0.21
SunONE 1534586 3.58 1501241 3.48 -0.10
Zeus 746240 1.74 742950 1.72 -0.02

Active Sites

DeveloperAugust 2003PercentSeptember 2003PercentChange
Apache 13325183 67.28 13371621 67.45 0.17
Microsoft 4839624 24.44 4804550 24.23 -0.21
Zeus265011 1.34 266220 1.34 0.00
SunONE213943 1.08 211234 1.07 -0.01

Totals for Active Servers Across All Domains June 2000 - September 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.

The Netcraft Web Server Survey is a survey of Web Server software usage on Internet connected computers. We collect and collate as many hostnames providing an http service as we can find, and systematically poll each one with an HTTP request for the server name.