You are viewing an outdated report.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) 12,220,278 hostnames, but only 2,313,990 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 2003 Count	October 2003 %	September 2003 Count	September 2003 %	Growth %
Apache	1,226,125	52.99	1,206,795	52.91	0.15
Microsoft-IIS	800,550	34.60	790,809	34.67	-0.21
Rapidsite	76,954	3.33	76,295	3.34	-0.58
null	41,915	1.81	39,497	1.73	4.61
Netscape-Enterprise	31,425	1.36	31,772	1.39	-2.50
Lotus-Domino	15,923	0.69	15,797	0.69	-0.64
Apache-AdvancedExtranetServer	8,700	0.38	8,542	0.37	0.40
A	7,866	0.34	7,658	0.34	1.25
Zeus	6,332	0.27	6,293	0.28	-0.82
WebSTAR	6,273	0.27	6,530	0.29	-5.31
WebSitePro	5,998	0.26	6,128	0.27	-3.52
WN	4,906	0.21	4,990	0.22	-3.09
Stronghold	4,688	0.20	4,616	0.20	0.11
IdeaWebServer	4,197	0.18	4,157	0.18	-0.48
Ipswitch-IMail	3,129	0.14	3,043	0.13	1.36
NetWare-Enterprise-Web-Server	3,112	0.13	3,110	0.14	-1.36
WebSite	2,841	0.12	2,846	0.12	-1.60
Netscape-FastTrack	2,302	0.10	2,381	0.10	-4.70
IBM_HTTP_Server	2,169	0.09	2,181	0.10	-1.97
FileMakerPro	2,141	0.09	2,135	0.09	-1.15
IBM_HTTP_SERVER	2,030	0.09	1,947	0.09	2.78
Zope	1,919	0.08	1,856	0.08	1.92
Oracle	1,919	0.08	1,853	0.08	2.08
IBM-HTTP-Server	1,502	0.06	1,549	0.07	-4.42
NCSA	1,419	0.06	1,470	0.06	-4.85
AppleShareIP	1,284	0.06	1,309	0.06	-3.31
FirstClass	1,275	0.06	1,266	0.06	-0.73
Resin	1,089	0.05	1,051	0.05	2.14
WebLogic	1,074	0.05	1,028	0.05	2.98
WebServer	1,072	0.05	996	0.04	6.09
4D_WebSTAR_S	1,046	0.05	1,006	0.04	2.49
SAMBAR	842	0.04	825	0.04	0.60
Oracle9iAS	802	0.03	748	0.03	5.69
Jetty	757	0.03	720	0.03	3.64
thttpd	703	0.03	678	0.03	2.21
HPWB	702	0.03	727	0.03	-4.82
AOLserver	698	0.03	699	0.03	-1.57
WDaemon	688	0.03	642	0.03	5.64
Cougar	677	0.03	640	0.03	4.27
Xitami	676	0.03	704	0.03	-5.35
Roxen·Challenger	657	0.03	677	0.03	-4.34
AnWeb	649	0.03	620	0.03	3.18
CommuniGatePro	642	0.03	629	0.03	0.61
Oracle_Web_Listener	625	0.03	659	0.03	-6.51
httpd+ssl	621	0.03	610	0.03	0.35
Lasso	604	0.03	604	0.03	-1.43
CERN	601	0.03	619	0.03	-4.29
Orion	580	0.03	563	0.02	1.55
Roxen	568	0.02	582	0.03	-3.80
OSU	549	0.02	554	0.02	-2.32
Boa	535	0.02	509	0.02	3.61
WWW	521	0.02	512	0.02	0.31
Netscape-Communications	505	0.02	520	0.02	-4.27
Statistics	459	0.02	451	0.02	0.32
Squid	448	0.02	468	0.02	-5.64
Web	434	0.02	423	0.02	1.14
MACOS_Personal_Websharing	425	0.02	421	0.02	-0.49
Novell-HTTP-Server	417	0.02	430	0.02	-4.41
squid	407	0.02	390	0.02	2.87
4D_WebStar_D	393	0.02	382	0.02	1.41
Domino-Go-Webserver	389	0.02	408	0.02	-6.02
AkamaiGHost	377	0.02	0	0.00	N/A
OmniHTTPd	371	0.02	383	0.02	-4.52
IceWarp	368	0.02	333	0.01	8.93
Inktomi	353	0.02	345	0.02	0.86
Red	256	0.01	260	0.01	-2.94
OpenSA	256	0.01	266	0.01	-5.13
EZproxy	238	0.01	217	0.01	8.11
QuidProQuo	237	0.01	239	0.01	-2.25
oXeo	231	0.01	228	0.01	-0.13
Apache-NeoNova	231	0.01	231	0.01	-1.43
UserLand	229	0.01	234	0.01	-3.53
Ultraseek	225	0.01	210	0.01	5.61
DeleGate	222	0.01	220	0.01	-0.53
MacHTTP	217	0.01	199	0.01	7.49
cpaneld	214	0.01	193	0.01	9.30
JavaWebServer	210	0.01	220	0.01	-5.91
Web_Server_4D	200	0.01	202	0.01	-2.40
Purveyor	200	0.01	204	0.01	-3.36
MHttpd	197	0.01	196	0.01	-0.92
Netscape-Commerce	191	0.01	199	0.01	-5.39
NaviServer	184	0.01	194	0.01	-6.51
Worldgroup	170	0.01	171	0.01	-2.00
IBM	168	0.01	168	0.01	-1.43
Internet	167	0.01	164	0.01	0.38
Caudium	167	0.01	172	0.01	-4.29
MDNServer	163	0.01	166	0.01	-3.21
JRun	163	0.01	164	0.01	-2.03
Tomcat	162	0.01	164	0.01	-2.63
NetCache	161	0.01	157	0.01	1.08
mod_perl	154	0.01	186	0.01	-18.39
HP-UX_Apache-based_Web_Server	154	0.01	150	0.01	1.20
WebSphere	151	0.01	0	0.00	N/A
Tcl-Webserver	150	0.01	145	0.01	1.97
HP	149	0.01	151	0.01	-2.73
Unknown	148	0.01	151	0.01	-3.39
Wapapi	144	0.01	137	0.01	3.61
WebtoB	137	0.01	134	0.01	0.78
Fujitsu-InfoProvider-Pro	133	0.01	129	0.01	1.63
LiveStats	131	0.01	127	0.01	1.68

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.