July 2004 Web Server Survey

In the July 2004 survey we received responses from 52,131,889 sites, continuing the recent growth trend with a gain of just under half a million sites from June.

The open source Apache server has gained more than 4 million hostnames in the first half of 2004, compared to slightly more than 1.5 million hostnames for Microsoft server products. That split has closely tracked existing trends, leaving market share virtually unchanged so far this year.

The months ahead may test that stability, given recent security problems with Microsoft's Internet Information Server (IIS). Numerous sites running IIS 5.0 on Windows 2000 were compromised and used to install password-stealing trojans on the machines of Internet users visiting those sites. Microsoft insists only unpatched servers were breached, but the initial version of the key Win2K patch was buggy. It remains to be seen whether having infected their own customers with malware will prompt the affected Microsoft-IIS 5.0 sites to switch platforms. Previous Microsoft-IIS worms have had suprisingly little impact on market share, although Code Red prompted a general tightening of router and firewall rulesets restricting access to web sites of all denominations, not just Microsoft-IIS.

Total Sites Across All Domains August 1995 - July 2004

Total Sites Across All Domains, August 1995 - July 2004

Graph of market share for top servers across all domains, August 1995 - July 2004

Top Developers
Developer June 2004Percent July 2004Percent Change
Apache3471023567.223512214667.370.15
Microsoft1102180721.351111566021.32-0.03
Sun16649273.2216566713.18-0.04
Zeus7631521.487547211.45-0.03
DeveloperJune 2004PercentJuly 2004PercentChange
Apache1622645268.711677433969.550.84
Microsoft545181423.08546955822.68-0.40
Zeus2588351.102610421.08-0.02
SunONE1817580.771872630.780.01
Totals for Active Servers Across All Domains
June 2000 - July 2004


Sun is the sum of sites running SunONE, 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.