Netcraft Web Server Survey

Netcraft

The Netcraft Web Server Survey

The Netcraft Web Server Survey is a survey of Web Server software usage on Internet connected computers. We collect and collate as many hostnames providing an http service as we can find, and systematically poll each one with an HTTP request for the server name.
In the March 2001 survey we received responses from 28,611,177 sites.

Market Share for Top Servers Across All Domains August 1995 - March 2001

Top Developers

Developer	February 2001	Percent	March 2001	Percent	Change
Apache	16871744	59.99	17238004	60.25	0.26
Microsoft	5523943	19.64	5650634	19.75	0.11
iPlanet	1788532	6.36	1785337	6.24	-0.12

Top Servers

Server	February 2001	Percent	March 2001	Percent	Change
Apache	16871744	59.99	17238004	60.25	0.26
Microsoft-IIS	5522069	19.63	5648960	19.74	0.11
Netscape-Enterprise	1751123	6.23	1750429	6.12	-0.11
WebLogic	1039605	3.70	1021184	3.57	-0.13
Zeus	801215	2.85	738068	2.58	-0.27
Rapidsite	380217	1.35	395094	1.38	0.03
thttpd	367724	1.31	365445	1.28	-0.03
AOLserver	153296	0.55	262650	0.92	0.37
tigershark	166465	0.59	182481	0.64	0.05
WebSitePro	114655	0.41	141737	0.50	0.09

Active Sites

Developer	February 2001	Percent	March 2001	Percent	Change
Apache	6716312	60.49	6744817	61.13	0.64
Microsoft	2776159	25.00	2739893	24.83	-0.17
iPlanet	278738	2.51	251536	2.28	-0.23

Totals for Active Servers Across All Domains June 2000 - March 2001

iPlanet is the sum of sites running 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.

Around the Net

See the April 2001 survey report for analysis covering this month.

Reports and Interactive Queries

Reports are provided showing server usage for the Internet as a whole, and for selected domains, with links to all the sites responding to the survey. A facility for you to check what server a particular site is running now is also available. The same form can be used to ensure that a particular site is included in future surveys. A directory of sites running in developer domains is also provided, while the sites discovered by the survey can be explored.

Fair Use, Copyright

Excerpts from this survey may be reproduced if Netcraft and the url http://www.netcraft.com/survey/ are attributed.

Your comments and criticism are much appreciated.