August 2007 Web Server Survey

In the August 2007 survey we received responses from 127,961,479 sites, an increase of 2.3 million sites from last month. Microsoft continues to increase its web server market share, adding 2.6 million sites this month as Apache loses 991K hostnames. As a result, Windows improves its market share by 1.4% to 34.2%, while Apache slips by 1.7% to 48.4%. Microsoft's recent gains raise the prospect that Windows may soon challenge Apache's leadership position.

The open source Apache has been the leading web server software since the March 1996 Netcraft Web Server Survey. In November 2005, Apache was found on 71 percent of web sites, putting it more than 50 percentage points ahead of Microsoft IIS (20.2 percent). At the time, Apache's market share advantage seemed insurmountable. But less than two years later, Microsoft has narrowed that 50 percent gap to 16.7 percent. The margin is even tighter in active sites, where Apache leads Microsoft by just 12.2 percent.

Apache's lead remains substantial in both categories. It's worth noting that Apache has lost market share to another open source server, lighttpd (1.2% of all sites), and Google (4.4%) as well as Windows. But if Microsoft continues to gain share at its current pace, it could close the gap on Apache sometime in 2008.

Total Sites Across All Domains August 1995 - August 2007

Total Sites Across All Domains, August 1995 - August 2007

Graph of market share for top servers across all domains, August 1995 - August 2007

Top Developers
DeveloperJuly 2007PercentAugust 2007PercentChange
Apache6614473452.656515341750.92-1.73
Microsoft4125791332.844386185434.281.44
Google54655384.3556975044.450.10
Sun22454931.7921954951.72-0.07
lighttpd14717791.1715001261.170.00
Zeus4634490.375624380.440.07
DeveloperJuly 2007PercentAugust 2007PercentChange
Apache2920893749.982851270648.42-1.56
Microsoft2076152135.532132085536.210.68
Google43215027.3948440768.230.84
lighttpd2474930.422535820.430.01
Zeus2154290.372175480.370.00
Sun2299600.392081450.35-0.04
Totals for Active Servers Across All Domains
June 2000 - August 2007


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.