August 2003 Web Server Survey

The Netcraft Webserver Survey is 8 years old this month. Happy Birthday!

The first Web Server Survey ran in August 1995 and found 18,957 sites. NCSA and CERN were the leading web servers of the day, in front of Netscape which had recently IPO'd, and the Apache project which started a few months earlier in March 1995. Microsoft-IIS, HTTP/1.1 hosting and domain name registrars were not then on the horizon.

In the August 2003 survey we received responses from 42,807,275 sites.

Apache hits an all time high in percentage share this month with 63.98% of sites found running an Apache server.

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

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

Top Developers

DeveloperJuly 2003PercentAugust 2003PercentChange
Apache2695187963.722738886063.980.26
Microsoft1097634225.951016574523.75-2.20
SunONE6745711.5915345863.581.99
Zeus7669431.817462401.74-0.07

Following on from last month, Microsoft continued to lose sites as Network Solutions migrated the rest of their domain parking system back to Solaris from a Windows based system hosted at Interland. This is primarily responsible for Microsoft's 2.2% fall, with a net loss of 810,597 sites.

Active Sites

DeveloperJuly 2003PercentAugust 2003PercentChange
Apache1316848867.541332518367.28-0.26
Microsoft467613023.98483962424.440.46
Zeus2809531.442650111.34-0.10
SunONE2206301.132139431.08-0.05

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