In the May 2009 survey we received responses from 235,890,526 sites, an increase of 4.3 million on last month. Apache remains firmly in the lead, having gained 3.3 million sites, and Microsoft-IIS remains second, having lost almost 0.9 million (mostly due to less activity seen at accounts on Microsoft's own Live Spaces service). QQ.com, the popular IM service in China, remains third with 29M sites. Google takes fourth place, after gaining approximately 1.5 million sites, and remains ahead of nginx which gained 200,000.

Global Distribution of nginx Sites

The Russian nginx web server web server nginx has been steadily increasing in popularity for several years. The chart below shows the geographical distribution of sites using nginx and in particular illustrates that China now has the most nginx sites, with almost 2.5 million and that the US is close behind with almost 2.4 million. nginx was written by Igor Sysoev and is well known for its rich feature set and low resource consumption.

Total Sites Across All Domains August 1995 - May 2009

Market Share for Top Servers Across All Domains August 1995 - May 2009

Top Developers

Developer	April 2009	Percent	May 2009	Percent	Change
Apache	106,368,727	45.95%	109,672,897	46.49%	0.55
Microsoft	67,767,928	29.27%	66,871,466	28.35%	-0.92
qq.com	28,905,133	12.49%	28,905,135	12.25%	-0.23
Google	7,229,033	3.12%	8,678,011	3.68%	0.56
nginx	6,100,424	2.64%	6,342,250	2.69%	0.05

Active Sites

Developer	April 2009	Percent	May 2009	Percent	Change
Apache	37,268,162	46.52%	38,170,144	46.89%	0.38
Microsoft	30,116,432	37.59%	29,049,223	35.69%	-1.90
Google	6,131,966	7.65%	7,326,606	9.00%	1.35
nginx	2,602,109	3.25%	2,725,496	3.35%	0.10
qq.com	0	0.00%	46,046	0.06%	0.06

Totals for Active Servers Across All Domains June 2000 - May 2009

Market Share for Top Servers Across the Million Busiest Sites September 2008 - May 2009

Developer	April 2009	Percent	May 2009	Percent	Change
Apache	663,649	67.56%	665,472	67.75%	0.19
Microsoft	185,763	18.91%	184,672	18.80%	-0.11
nginx	31,064	3.16%	31,958	3.25%	0.09
Google	16,088	1.64%	17,058	1.74%	0.10