May 2006 Web Server Survey

In the May 2006 survey we received responses from 81,565,877 sites, an increase of 909K sites from the April survey. The Internet has grown by 7.2 million hostnames thus far in 2006, and continued growth at this rate would result in an increase of 17 million hostnames this year. That's close to the record pace from 2005, when the Web added 17.5 million sites.

This month 1.7 million hostnames at Go Daddy that were classified as "Other" in April are recognized as Apache sites running on Linux. Large blocks of Apache sites at Go Daddy have shifted back and forth between Apache and Other since January , due to changes in its bulk hosting service. It uses a front-end system that generates an HTTP redirect with no Server header when a site is first accessed — only once the redirect is followed, or if the site is accessed a second time, does it identify Apache as the server.

The latest shift helps Apache regain 2% market share after a drop of 5.7% last month, when Go Daddy shifted more than 4 million hostnames from Apache to Windows Server 2003. Apache's improvement this month has no effect on Go Daddy's continued hosting of parked domains on Windows Server 2003, which gains 143K hostnames at Go Daddy this month.

Total Sites Across All Domains August 1995 - May 2006

Total Sites Across All Domains, August 1995 - May 2006

Graph of market share for top servers across all domains, August 1995 - May 2006

Top Developers
DeveloperApril 2006PercentMay 2006PercentChange
Apache5058843362.725281951764.762.04
Microsoft2034365625.222076423925.460.24
Sun19075032.3619179502.35-0.01
Zeus5633810.705504370.67-0.03
DeveloperApril 2006PercentMay 2006PercentChange
Apache2482648364.882538425166.081.20
Microsoft994678925.991017160726.480.49
Zeus2570240.672565220.670.00
Sun2365320.622529120.660.04
Totals for Active Servers Across All Domains
June 2000 - May 2006


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.