May 2005 Web Server Survey

In the May 2005 survey we received responses from 63,532,742 sites, an increase of 1.24 million sites from last month. The gain continues the strong growth of the Web, which has added an average 1.2 million sites per month thus far in 2005.

Microsoft web servers had a modest 0.25% share improvement in active sites that reversed several months of small gains by Apache.

Total Sites Across All Domains August 1995 - May 2005

Total Sites Across All Domains, August 1995 - May 2005

Graph of market share for top servers across all domains, August 1995 - May 2005

Top Developers
DeveloperApril 2005PercentMay 2005PercentChange
Apache4317444269.324407226269.370.05
Microsoft1273558820.451304934620.540.09
Sun18809213.0218562222.92-0.10
Zeus5765820.935626140.89-0.04
DeveloperApril 2005PercentMay 2005PercentChange
Apache2009032870.292066368270.09-0.20
Microsoft634394622.20661769522.450.25
Sun2421540.852488000.84-0.01
Zeus2009230.702131780.720.02
Totals for Active Servers Across All Domains
June 2000 - May 2005


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.