You are viewing an outdated report. The latest version of this report was published on April 1st, 2025

Web server surveys have been around for a long time. One of the problems with running a survey is how to produce meaningful results given the number of choices with the collection and reporting methodologies. Some examples:

• How does one treat wildcarded DNS sites that generate unlimited number of unique hostnames, all residing on the same system?
• How does one treat taste-testing web sites that do not have any unique content on them at all?
• If very large number of web sites reside on a single IP address, is it a a case of search engine spamming, a large number of low traffic web sites on a single platform, or a web hosting facility using load-redirection for a large number of legitimate web sites?
• How "greedy" or aggressive should the hunt for new web sites be?

All of the above are issues that our conventional web server survey deals with. The biggest issue that comes up time and again, however, is the fact that our conventional survey counts unique hostnames, not unique installations. This can seriously impact market share statistics. Case in point: the data set used both web server survey reports contains (for the last month's data set) 15,389,236 hostnames, but only 2,625,668 distinct IP addresses.

This particular report addresses this in part by counting unique IP addresses in an attempt at answering the question of how many installations of a particular server might exist. By using the IP address as a proxy for the physical hardware on which a server is running, we still need to be aware that it is not a perfect 1 to 1 mapping:

• A load balanced network of servers might share a single public facing IP address, and be undercounted.
• A single server may have multiple public IP addresses bound to one or more network cards on the system, and thus still be counted more than once.

While not a perfect solution, we feel that counting web servers by IP will give a much closer view of the number of server installs for a given technology.

Click any server to see detailed graphs and histories.

Server	July 2005 Count	July 2005 %	June 2005 Count	June 2005 %	Growth %
Apache	1,456,875	55.49	1,461,461	55.51	-0.04
Microsoft-IIS	844,104	32.15	847,657	32.20	-0.15
null	87,096	3.32	84,191	3.20	3.73
Rapidsite	69,130	2.63	69,510	2.64	-0.27
Netscape-Enterprise	20,056	0.76	20,498	0.78	-1.89
Lotus-Domino	15,286	0.58	15,408	0.59	-0.52
A	10,350	0.39	10,260	0.39	1.15
Apache-AdvancedExtranetServer	10,012	0.38	10,283	0.39	-2.37
Apache-Coyote	6,356	0.24	6,088	0.23	4.69
IdeaWebServer	5,899	0.22	5,796	0.22	2.06
Zeus	5,436	0.21	5,490	0.21	-0.71
Ipswitch-IMail	3,474	0.13	3,506	0.13	-0.64
WN	3,410	0.13	3,478	0.13	-1.69
WebSTAR	3,402	0.13	3,550	0.13	-3.91
Zope	3,085	0.12	3,047	0.12	1.52
Sun-ONE-Web-Server	3,024	0.12	2,970	0.11	2.10
IBM_HTTP_SERVER	3,009	0.11	2,997	0.11	0.68
WebSitePro	2,905	0.11	3,024	0.11	-3.67
IBM_HTTP_Server	2,269	0.09	2,252	0.09	1.03
WebServer	2,179	0.08	2,191	0.08	-0.27
WebSite	2,106	0.08	2,281	0.09	-7.42
Stronghold	2,044	0.08	2,213	0.08	-7.38
Resin	1,982	0.08	2,004	0.08	-0.83
Oracle	1,960	0.07	1,986	0.08	-1.04
FileMakerPro	1,809	0.07	1,877	0.07	-3.36
NetWare-Enterprise-Web-Server	1,576	0.06	1,708	0.06	-7.48
4D_WebSTAR_S	1,443	0.05	1,437	0.05	0.69
squid	1,398	0.05	1,375	0.05	1.95
FirstClass	1,355	0.05	1,411	0.05	-3.71
Jetty	1,295	0.05	1,315	0.05	-1.25
WebLogic	1,186	0.05	1,172	0.04	1.47
Netscape-FastTrack	1,166	0.04	1,211	0.05	-3.45
httpd+ssl	1,089	0.04	1,100	0.04	-0.73
Cougar	1,060	0.04	1,063	0.04	-0.01
nginx	1,039	0.04	1,035	0.04	0.66
WDaemon	1,036	0.04	1,047	0.04	-0.78
Oracle-Application-Server-10g	1,025	0.04	956	0.04	7.51
Oracle9iAS	1,022	0.04	1,052	0.04	-2.59
IBM-HTTP-Server	1,002	0.04	1,081	0.04	-7.05
IceWarp	981	0.04	948	0.04	3.77
thttpd	921	0.04	917	0.03	0.71
III	898	0.03	891	0.03	1.06
Boa	895	0.03	925	0.04	-2.98
CommuniGatePro	828	0.03	831	0.03	-0.09
AnWeb	809	0.03	827	0.03	-1.91
NCSA	748	0.03	801	0.03	-6.36
SAMBAR	730	0.03	738	0.03	-0.81
AOLserver	724	0.03	734	0.03	-1.09
Web	710	0.03	727	0.03	-2.07
AppleShareIP	608	0.02	660	0.03	-7.63
Orion	569	0.02	550	0.02	3.74
WebSphere	535	0.02	530	0.02	1.22
redir-httpd	501	0.02	494	0.02	1.70
DeleGate	499	0.02	480	0.02	4.24
Xitami	485	0.02	517	0.02	-5.93
EZproxy	476	0.02	473	0.02	0.91
4D_WebStar_D	457	0.02	457	0.02	0.27
Roxen	449	0.02	453	0.02	-0.61
OSU	446	0.02	450	0.02	-0.62
Simple,	441	0.02	482	0.02	-8.26
cpsrvd	410	0.02	423	0.02	-2.81
NetCache	392	0.01	370	0.01	6.24
HPWB	371	0.01	374	0.01	-0.53
Ultraseek	360	0.01	355	0.01	1.69
WebtoB	343	0.01	332	0.01	3.60
lighttpd	340	0.01	287	0.01	18.79
Squid	327	0.01	334	0.01	-1.83
Roxen·Challenger	326	0.01	333	0.01	-1.83
Tcl-Webserver	317	0.01	314	0.01	1.23
AkamaiGHost	310	0.01	317	0.01	-1.94
Oracle_Web_Listener	294	0.01	295	0.01	-0.07
Apache-NeoNova	290	0.01	294	0.01	-1.09
CERN	256	0.01	286	0.01	-10.24
oXeo	242	0.01	250	0.01	-2.93
GWS	237	0.01	217	0.01	9.52
Blocked	236	0.01	239	0.01	-0.98
Abyss	236	0.01	238	0.01	-0.57
Statistics	235	0.01	244	0.01	-3.42
OpenSA	233	0.01	231	0.01	1.14
UserLand	211	0.01	213	0.01	-0.67
Powered	209	0.01	221	0.01	-5.17
JRun	207	0.01	201	0.01	3.27
Domino-Go-Webserver	205	0.01	216	0.01	-4.83
eSoft	202	0.01	194	0.01	4.41
kucci	198	0.01	0	0.00	N/A
Lasso	194	0.01	201	0.01	-3.22
Inktomi	193	0.01	198	0.01	-2.26
Netscape-Communications	187	0.01	189	0.01	-0.79
Red	181	0.01	194	0.01	-6.44
IBM	175	0.01	177	0.01	-0.86
Caudium	168	0.01	167	0.01	0.87
Internet	162	0.01	155	0.01	4.80
Indy	162	0.01	170	0.01	-4.44
Novell-HTTP-Server	160	0.01	174	0.01	-7.79
Web_Server_4D	159	0.01	166	0.01	-3.95
httpd	153	0.01	151	0.01	1.60
SilverStream	153	0.01	151	0.01	1.60
OmniHTTPd	153	0.01	155	0.01	-1.02
Polaris	152	0.01	152	0.01	0.27
Jeus	147	0.01	150	0.01	-1.73

Note: Readers are cautioned that the Growth percentages are based on a server's market share penetration rather than the absolute number of servers we detected. Thus, it is possible for the number of servers to increase, while the growth is actually a negative value.