You are viewing an outdated report.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) 8,490,731 hostnames, but only 1,981,841 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 2002 Count	October 2002 %	September 2002 Count	September 2002 %	Growth %
Apache	1,014,387	51.18	1,000,762	51.38	-0.39
Microsoft-IIS	702,668	35.46	689,015	35.38	0.22
Rapidsite	63,274	3.19	62,809	3.22	-1.00
Netscape-Enterprise	37,161	1.88	37,260	1.91	-1.99
null	30,279	1.53	29,444	1.51	1.06
Lotus-Domino	14,532	0.73	14,345	0.74	-0.45
WebSTAR	8,316	0.42	8,461	0.43	-3.41
WebSitePro	8,209	0.41	8,337	0.43	-3.24
Apache-AdvancedExtranetServer	7,103	0.36	7,046	0.36	-0.93
FrontPage	6,385	0.32	6,649	0.34	-5.63
Stronghold	6,059	0.31	6,166	0.32	-3.43
Zeus	5,910	0.30	6,162	0.32	-5.75
WN	5,833	0.29	6,047	0.31	-5.20
A	5,212	0.26	0	0.00	N/A
IdeaWebServer	3,734	0.19	3,739	0.19	-1.86
Netscape-FastTrack	3,229	0.16	3,316	0.17	-4.31
NetWare-Enterprise-Web-Server	3,174	0.16	3,127	0.16	-0.25
WebSite	2,404	0.12	2,379	0.12	-0.69
NCSA	2,328	0.12	2,417	0.12	-5.35
IBM_HTTP_Server	2,268	0.11	2,305	0.12	-3.30
Ipswitch-IMail	2,020	0.10	1,945	0.10	2.06
FileMakerPro	1,935	0.10	1,928	0.10	-1.37
AppleShareIP	1,686	0.09	1,683	0.09	-1.55
Squid	1,506	0.08	1,556	0.08	-4.88
IBM-HTTP-Server	1,488	0.08	1,444	0.07	1.27
Roxen·Challenger	1,273	0.06	1,300	0.07	-3.77
Oracle	1,244	0.06	1,161	0.06	5.30
FirstClass	1,061	0.05	1,041	0.05	0.16
Zope	1,059	0.05	1,007	0.05	3.35
HPWB	1,052	0.05	1,053	0.05	-1.82
CERN	916	0.05	949	0.05	-5.14
Oracle_Web_Listener	904	0.05	948	0.05	-6.29
IBM_HTTP_SERVER	880	0.04	757	0.04	14.24
Netscape-Communications	782	0.04	790	0.04	-2.72
SAMBAR	761	0.04	739	0.04	1.20
WebLogic	735	0.04	717	0.04	0.74
Xitami	714	0.04	703	0.04	-0.19
OSU	640	0.03	655	0.03	-3.98
Novell-HTTP-Server	623	0.03	654	0.03	-6.39
Roxen	590	0.03	584	0.03	-0.72
Resin	555	0.03	522	0.03	4.49
Lasso	554	0.03	515	0.03	5.72
Domino-Go-Webserver	535	0.03	540	0.03	-2.64
AOLserver	535	0.03	505	0.03	4.11
thttpd	522	0.03	543	0.03	-5.53
Statistics	467	0.02	459	0.02	-0.01
MACOS_Personal_Websharing	452	0.02	425	0.02	4.52
Orion	426	0.02	424	0.02	-1.26
CommuniGatePro	426	0.02	409	0.02	2.36
WWW	422	0.02	425	0.02	-2.42
Cougar	407	0.02	394	0.02	1.52
AnWeb	400	0.02	369	0.02	6.53
4D_WebSTAR_S	399	0.02	321	0.02	22.15
Web	384	0.02	386	0.02	-2.24
WDaemon	369	0.02	371	0.02	-2.26
OmniHTTPd	346	0.02	338	0.02	0.60
Inktomi	339	0.02	333	0.02	0.04
Red	333	0.02	367	0.02	-10.83
Boa	305	0.02	280	0.01	7.05
Netscape-Commerce	298	0.02	318	0.02	-7.91
mod_perl	290	0.01	289	0.01	-1.39
QuidProQuo	290	0.01	307	0.02	-7.17
A-P-A-C-H-E	281	0.01	0	0.00	N/A
JavaWebServer	280	0.01	286	0.01	-3.79
Apache-NeoNova	277	0.01	0	0.00	N/A
httpd+ssl	264	0.01	240	0.01	8.10
MacHTTP	260	0.01	266	0.01	-3.94
Oracle9iAS	233	0.01	177	0.01	29.37
NaviServer	230	0.01	252	0.01	-10.31
Purveyor	228	0.01	243	0.01	-7.79
Netrox-Apache	211	0.01	212	0.01	-2.19
Web_Server_4D	209	0.01	208	0.01	-1.25
4D_WebStar_D	208	0.01	196	0.01	4.29
UserLand	204	0.01	191	0.01	4.96
Commerce-Builder	195	0.01	196	0.01	-2.23
Jetty	190	0.01	156	0.01	19.69
Worldgroup	189	0.01	199	0.01	-6.67
Ultraseek	189	0.01	197	0.01	-5.72
OpenSA	187	0.01	151	0.01	21.70
Caudium	172	0.01	171	0.01	-1.15
MediaGalaxy	171	0.01	169	0.01	-0.56
IBM	168	0.01	170	0.01	-2.88
MHttpd	155	0.01	144	0.01	5.78
Sun_WebServer	152	0.01	156	0.01	-4.25
Powered	151	0.01	153	0.01	-3.01
NetCache	148	0.01	147	0.01	-1.06
MDNServer	148	0.01	146	0.01	-0.38
Internet	145	0.01	138	0.01	3.26
Microsoft-PWS-95	142	0.01	145	0.01	-3.76
ALEPH	137	0.01	135	0.01	-0.27
Unknown	136	0.01	125	0.01	6.92
Microsoft-PWS	136	0.01	153	0.01	-12.65
SilverStream	133	0.01	136	0.01	-3.89
PowerWeb	133	0.01	136	0.01	-3.89
Oracle_Web_listener3.0.2.0.0	124	0.01	122	0.01	-0.12
PoSHTTPd	116	0.01	0	0.00	N/A
David-WebBox	114	0.01	109	0.01	2.78
JRun	110	0.01	110	0.01	-1.73
HTTP	109	0.01	115	0.01	-6.85
Fujitsu-InfoProvider-Pro	106	0.01	100	0.01	4.17

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.