You are viewing an outdated report. The latest version of this report was published on January 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) 12,838,116 hostnames, but only 2,312,009 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	November 2003 Count	November 2003 %	October 2003 Count	October 2003 %	Growth %
Apache	1,227,627	53.10	1,226,125	52.99	0.21
Microsoft-IIS	798,425	34.53	800,550	34.60	-0.18
Rapidsite	76,853	3.32	76,954	3.33	-0.05
null	42,167	1.82	41,915	1.81	0.69
Netscape-Enterprise	30,786	1.33	31,425	1.36	-1.95
Lotus-Domino	15,774	0.68	15,923	0.69	-0.85
Apache-AdvancedExtranetServer	8,648	0.37	8,700	0.38	-0.51
A	7,922	0.34	7,866	0.34	0.80
Zeus	6,424	0.28	6,332	0.27	1.54
WebSTAR	6,144	0.27	6,273	0.27	-1.97
WebSitePro	5,620	0.24	5,998	0.26	-6.22
WN	4,773	0.21	4,906	0.21	-2.63
Stronghold	4,363	0.19	4,688	0.20	-6.85
IdeaWebServer	4,216	0.18	4,197	0.18	0.54
Ipswitch-IMail	3,145	0.14	3,129	0.14	0.60
NetWare-Enterprise-Web-Server	3,059	0.13	3,112	0.13	-1.62
WebSite	2,886	0.12	2,841	0.12	1.67
Netscape-FastTrack	2,231	0.10	2,302	0.10	-3.00
FileMakerPro	2,127	0.09	2,141	0.09	-0.57
IBM_HTTP_Server	2,108	0.09	2,169	0.09	-2.73
IBM_HTTP_SERVER	2,086	0.09	2,030	0.09	2.85
Zope	1,965	0.08	1,919	0.08	2.48
Oracle	1,929	0.08	1,919	0.08	0.61
IBM-HTTP-Server	1,469	0.06	1,502	0.06	-2.11
NCSA	1,376	0.06	1,419	0.06	-2.95
FirstClass	1,287	0.06	1,275	0.06	1.03
AppleShareIP	1,245	0.05	1,284	0.06	-2.95
WebServer	1,133	0.05	1,072	0.05	5.78
Resin	1,110	0.05	1,089	0.05	2.02
WebLogic	1,079	0.05	1,074	0.05	0.55
4D_WebSTAR_S	1,062	0.05	1,046	0.05	1.62
Oracle9iAS	854	0.04	802	0.03	6.58
SAMBAR	848	0.04	842	0.04	0.80
Jetty	807	0.03	757	0.03	6.70
WDaemon	694	0.03	688	0.03	0.96
httpd+ssl	684	0.03	621	0.03	10.24
Cougar	683	0.03	677	0.03	0.97
HPWB	673	0.03	702	0.03	-4.05
Xitami	670	0.03	676	0.03	-0.80
thttpd	669	0.03	703	0.03	-4.75
AOLserver	666	0.03	698	0.03	-4.50
AkamaiGHost	662	0.03	377	0.02	75.75
CommuniGatePro	661	0.03	642	0.03	3.05
AnWeb	624	0.03	649	0.03	-3.77
Lasso	598	0.03	604	0.03	-0.91
Oracle_Web_Listener	596	0.03	625	0.03	-4.56
Roxen·Challenger	586	0.03	657	0.03	-10.73
Orion	571	0.02	580	0.03	-1.47
CERN	569	0.02	601	0.03	-5.24
Roxen	564	0.02	568	0.02	-0.62
OSU	554	0.02	549	0.02	1.00
Boa	544	0.02	535	0.02	1.77
WWW	534	0.02	521	0.02	2.58
Netscape-Communications	478	0.02	505	0.02	-5.27
Squid	459	0.02	448	0.02	2.54
Statistics	453	0.02	459	0.02	-1.22
squid	451	0.02	407	0.02	10.91
Web	431	0.02	434	0.02	-0.61
Novell-HTTP-Server	407	0.02	417	0.02	-2.31
MACOS_Personal_Websharing	403	0.02	425	0.02	-5.10
4D_WebStar_D	391	0.02	393	0.02	-0.42
Domino-Go-Webserver	381	0.02	389	0.02	-1.97
IceWarp	377	0.02	368	0.02	2.53
OmniHTTPd	359	0.02	371	0.02	-3.15
Inktomi	352	0.02	353	0.02	-0.20
OpenSA	267	0.01	256	0.01	4.39
Red	255	0.01	256	0.01	-0.31
EZproxy	250	0.01	238	0.01	5.13
DeleGate	232	0.01	222	0.01	4.59
Apache-NeoNova	229	0.01	231	0.01	-0.78
UserLand	228	0.01	229	0.01	-0.35
QuidProQuo	227	0.01	237	0.01	-4.14
Ultraseek	223	0.01	225	0.01	-0.80
oXeo	218	0.01	231	0.01	-5.55
MacHTTP	214	0.01	217	0.01	-1.30
cpaneld	208	0.01	214	0.01	-2.72
JavaWebServer	195	0.01	210	0.01	-7.06
Web_Server_4D	193	0.01	200	0.01	-3.42
MHttpd	192	0.01	197	0.01	-2.45
Purveyor	188	0.01	200	0.01	-5.92
Netscape-Commerce	188	0.01	191	0.01	-1.49
NaviServer	176	0.01	184	0.01	-4.27
IBM	171	0.01	168	0.01	1.87
Worldgroup	166	0.01	170	0.01	-2.27
WebSphere	166	0.01	151	0.01	10.03
Caudium	166	0.01	167	0.01	-0.51
Tcl-Webserver	163	0.01	150	0.01	8.76
Internet	161	0.01	167	0.01	-3.51
JRun	160	0.01	163	0.01	-1.76
NetCache	157	0.01	161	0.01	-2.40
Tomcat	155	0.01	162	0.01	-4.24
MDNServer	151	0.01	163	0.01	-7.28
mod_perl	149	0.01	154	0.01	-3.16
HP-UX_Apache-based_Web_Server	146	0.01	154	0.01	-5.11
Unknown	145	0.01	148	0.01	-1.94
HP	143	0.01	149	0.01	-3.94
WebtoB	139	0.01	137	0.01	1.55
Wapapi	139	0.01	144	0.01	-3.39
JARING	133	0.01	0	0.00	N/A
LiveStats	131	0.01	131	0.01	0.09

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.