You are viewing an outdated report. The latest version of this report was published on October 1st, 2024

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) 15,994,141 hostnames, but only 2,673,281 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	October 2005 Count	October 2005 %	September 2005 Count	September 2005 %	Growth %
Apache	1,487,062	55.63	1,467,607	55.57	0.11
Microsoft-IIS	848,784	31.75	841,706	31.87	-0.37
null	96,908	3.63	93,390	3.54	2.52
Rapidsite	68,913	2.58	68,825	2.61	-1.08
Netscape-Enterprise	18,523	0.69	19,204	0.73	-4.71
Lotus-Domino	15,164	0.57	15,185	0.57	-1.34
A	10,715	0.40	10,559	0.40	0.26
Apache-AdvancedExtranetServer	9,761	0.37	9,783	0.37	-1.43
Apache-Coyote	7,780	0.29	7,138	0.27	7.68
IdeaWebServer	6,275	0.23	6,066	0.23	2.20
Zeus	5,366	0.20	5,388	0.20	-1.61
Ipswitch-IMail	3,469	0.13	3,403	0.13	0.71
Sun-ONE-Web-Server	3,307	0.12	3,220	0.12	1.47
Zope	3,231	0.12	3,140	0.12	1.66
WebSTAR	3,184	0.12	3,235	0.12	-2.76
WN	3,149	0.12	3,252	0.12	-4.33
IBM_HTTP_SERVER	2,944	0.11	2,969	0.11	-2.04
WebSitePro	2,657	0.10	2,816	0.11	-6.78
IBM_HTTP_Server	2,451	0.09	2,377	0.09	1.87
WebServer	2,314	0.09	2,243	0.08	1.92
Resin	2,176	0.08	2,074	0.08	3.65
WebSite	2,066	0.08	2,068	0.08	-1.30
Oracle	1,884	0.07	1,917	0.07	-2.90
NOYB	1,839	0.07	1,494	0.06	21.61
FileMakerPro	1,780	0.07	1,732	0.07	1.53
Stronghold	1,628	0.06	1,686	0.06	-4.60
squid	1,564	0.06	1,534	0.06	0.73
4D_WebSTAR_S	1,449	0.05	1,429	0.05	0.18
NetWare-Enterprise-Web-Server	1,395	0.05	1,399	0.05	-1.49
FirstClass	1,375	0.05	1,382	0.05	-1.70
Jetty	1,315	0.05	1,296	0.05	0.24
Oracle-Application-Server-10g	1,233	0.05	1,128	0.04	7.99
nginx	1,231	0.05	1,146	0.04	6.12
WebLogic	1,217	0.05	1,224	0.05	-1.77
Cougar	1,130	0.04	1,104	0.04	1.12
Netscape-FastTrack	1,064	0.04	1,087	0.04	-3.29
httpd+ssl	1,037	0.04	1,064	0.04	-3.71
WDaemon	1,035	0.04	1,019	0.04	0.35
Boa	1,002	0.04	990	0.04	-0.01
IceWarp	996	0.04	968	0.04	1.65
thttpd	978	0.04	920	0.03	5.02
Oracle9iAS	974	0.04	995	0.04	-3.29
IBM-HTTP-Server	928	0.03	963	0.04	-4.79
III	907	0.03	896	0.03	0.01
CommuniGatePro	853	0.03	833	0.03	1.17
AnWeb	831	0.03	779	0.03	5.39
AOLserver	739	0.03	731	0.03	-0.12
Web	710	0.03	711	0.03	-1.34
SAMBAR	688	0.03	688	0.03	-1.20
NCSA	669	0.03	708	0.03	-6.65
lighttpd	634	0.02	499	0.02	25.52
AppleShareIP	570	0.02	582	0.02	-3.24
Orion	560	0.02	557	0.02	-0.67
WebSphere	524	0.02	537	0.02	-3.60
EZproxy	512	0.02	499	0.02	1.37
Xitami	497	0.02	476	0.02	3.15
redir-httpd	496	0.02	488	0.02	0.42
DeleGate	478	0.02	496	0.02	-4.79
4D_WebStar_D	473	0.02	475	0.02	-1.62
Roxen	438	0.02	440	0.02	-1.65
OSU	433	0.02	441	0.02	-3.00
cpsrvd	432	0.02	429	0.02	-0.51
NetCache	416	0.02	392	0.01	4.84
Simple,	410	0.02	417	0.02	-2.86
UserLand	405	0.02	198	0.01	102.08
AkamaiGHost	402	0.02	343	0.01	15.79
Ultraseek	375	0.01	361	0.01	2.63
WebtoB	369	0.01	354	0.01	2.98
HPWB	340	0.01	353	0.01	-4.84
GWS	290	0.01	262	0.01	9.35
Apache-NeoNova	288	0.01	282	0.01	0.90
Tcl-Webserver	284	0.01	280	0.01	0.21
Squid	281	0.01	286	0.01	-2.93
Abyss	277	0.01	235	0.01	16.45
Roxen·Challenger	268	0.01	300	0.01	-11.74
Oracle_Web_Listener	263	0.01	275	0.01	-5.51
Blocked	260	0.01	255	0.01	0.73
CERN	237	0.01	239	0.01	-2.03
OpenSA	223	0.01	221	0.01	-0.31
Statistics	220	0.01	221	0.01	-1.65
Powered	213	0.01	208	0.01	1.17
JRun	210	0.01	210	0.01	-1.20
eSoft	209	0.01	199	0.01	3.76
Webserver	208	0.01	192	0.01	7.03
kucci	196	0.01	200	0.01	-3.18
Domino-Go-Webserver	195	0.01	190	0.01	1.40
Caudium	185	0.01	171	0.01	6.88
oXeo	182	0.01	184	0.01	-2.28
Lasso	174	0.01	174	0.01	-1.20
Red	170	0.01	171	0.01	-1.78
IBM	170	0.01	171	0.01	-1.78
Inktomi	168	0.01	178	0.01	-6.75
Polaris	167	0.01	160	0.01	3.12
Netscape-Communications	164	0.01	172	0.01	-5.80
httpd	162	0.01	159	0.01	0.66
Jeus	162	0.01	157	0.01	1.94
Indy	158	0.01	162	0.01	-3.64
Web_Server_4D	155	0.01	151	0.01	1.41
Internet	155	0.01	165	0.01	-7.19
""	149	0.01	0	0.00	N/A

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.