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The May Netcraft survey is out: it's an Apache world!

By Kevin Reichard (Send Email)
Posted Jun 1, 2001


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 May 2001 survey we received responses from 29,031,745sites.

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

Top Developers

DeveloperApril 2001PercentMay 2001PercentChange
Apache 17932251 62.55 18069603 62.24 -0.31
Microsoft 5918319 20.64 5958734 20.52 -0.12
iPlanet 1798490 6.27 1813244 6.25 -0.02

Top Servers

ServerApril 2001PercentMay 2001PercentChange
Apache 17932251 62.55 18069603 62.24 -0.31
Microsoft-IIS 5916724 20.64 5957240 20.52 -0.12
Netscape-Enterprise 1762872 6.15 1778958 6.13 -0.02
Zeus 779209 2.72 798745 2.75 0.03
Rapidsite 402829 1.41 407488 1.40 -0.01
AOLserver 272815 0.95 377264 1.30 0.35
thttpd 369930 1.29 370282 1.28 -0.01
tigershark 200620 0.70 215321 0.74 0.04
WebSitePro 119586 0.42 118762 0.41 -0.01
ConcentricHost-Ashurbanipal 106443 0.37 109879 0.38 0.01

Active Sites

DeveloperApril 2001PercentMay 2001PercentChange
Apache 7015250 61.67 7230089 61.53 -0.14
Microsoft 2961984 26.04 3062949 26.07 0.03
iPlanet 294594 2.59 324722 2.76 0.17

Albeit released closer to June 1 than May 1, the Netcraft survey of Web servers has the Apache Web server slightly declining in market share.

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.

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