January 2005 Web Server Survey

In the January 2005 survey we received responses from 58,194,836 sites, a robust gain of 1.27 million sites from the December survey.

After months of little change in market share between the two major web servers, Apache added nearly a full percentage point to its lead over Microsoft, which is now 47.5 percentage points (68.4% to 20.9%) as measured by hostnames, with a slightly smaller gain in active sites.

While this month's 1 percent shift is modest by historic standards, it follows a 12-month period in which Apache's lead grew by just 0.09 percent (from 46.56 to 46.65%), despite adding 7.6 million sites between Dec. 2003 and Dec. 2004. Microsoft added 2.46 million sites during the same period.

Total Sites Across All Domains August 1995 - January 2005

Total Sites Across All Domains, August 1995 - January 2005

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

Top Developers
DeveloperDecember 2004PercentJanuary 2005PercentChange
Apache3861467367.843982136868.430.59
Microsoft1206276121.191213744620.86-0.33
Sun18129663.1818300083.14-0.04
Zeus6875081.216901931.19-0.02
DeveloperDecember 2004PercentJanuary 2005PercentChange
Apache1805388769.511840479369.700.19
Microsoft594075722.87599333322.70-0.17
Zeus2364000.912361440.89-0.02
Sun2062120.792094140.790.00
Totals for Active Servers Across All Domains
June 2000 - January 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.