July 2010 Web Server Survey by Netcraft

http://news.netcraft.com/archives/2010/07/16/july-2010-web-server-survey-16.html

Market Share for Top Servers Across All Domains
August 1995 - July 2010

Developer	June 2010	Percent	July 2010	Percent	Change
Apache	111,792,321	54.02%	112,945,968	54.90%	0.89
Microsoft	53,865,345	26.03%	53,217,620	25.87%	-0.16
Google	15,375,950	7.43%	15,849,853	7.70%	0.28
nginx	11,264,229	5.44%	11,474,696	5.58%	0.14
lighttpd	1,704,797	0.82%	1,258,800	0.61%	-0.21

Market Share for Top Servers Across the Million Busiest Sites
September 2008 - July 2010

Developer	June 2010	Percent	July 2010	Percent	Change
Apache	662,169	66.61%	662,198	66.60%	-0.01
Microsoft	169,418	17.04%	167,664	16.86%	-0.18
nginx	49,530	4.98%	51,846	5.21%	0.23
Google	19,425	1.95%	19,455	1.96%	0.00