You are viewing an outdated report.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) 14,258,726 hostnames, but only 2,341,254 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	June 2004 Count	June 2004 %	May 2004 Count	May 2004 %	Growth %
Apache	1,263,254	53.96	1,288,615	53.89	0.13
Microsoft-IIS	789,514	33.72	807,803	33.78	-0.18
Rapidsite	74,621	3.19	76,726	3.21	-0.66
null	53,547	2.29	53,254	2.23	2.70
Netscape-Enterprise	26,229	1.12	27,451	1.15	-2.41
Lotus-Domino	15,251	0.65	15,702	0.66	-0.80
Apache-AdvancedExtranetServer	9,335	0.40	9,473	0.40	0.65
A	8,471	0.36	8,618	0.36	0.40
Zeus	6,062	0.26	6,332	0.26	-2.22
WebSTAR	4,867	0.21	5,191	0.22	-4.24
IdeaWebServer	4,555	0.19	4,631	0.19	0.46
WebSitePro	4,386	0.19	4,642	0.19	-3.50
WN	4,130	0.18	4,323	0.18	-2.42
Ipswitch-IMail	3,257	0.14	3,328	0.14	-0.04
Stronghold	3,193	0.14	3,432	0.14	-4.98
WebSite	2,728	0.12	2,791	0.12	-0.17
NetWare-Enterprise-Web-Server	2,586	0.11	2,742	0.11	-3.67
IBM_HTTP_SERVER	2,467	0.11	2,458	0.10	2.51
Zope	2,371	0.10	2,350	0.10	3.05
IBM_HTTP_Server	2,032	0.09	2,090	0.09	-0.70
FileMakerPro	2,006	0.09	2,083	0.09	-1.64
Oracle	1,911	0.08	1,938	0.08	0.71
Netscape-FastTrack	1,760	0.08	1,829	0.08	-1.72
IBM-HTTP-Server	1,373	0.06	1,409	0.06	-0.47
FirstClass	1,313	0.06	1,325	0.06	1.21
Resin	1,282	0.05	1,302	0.05	0.57
4D_WebSTAR_S	1,262	0.05	1,273	0.05	1.25
WebServer	1,243	0.05	1,230	0.05	3.22
WebLogic	1,241	0.05	1,222	0.05	3.73
Oracle9iAS	1,079	0.05	1,083	0.05	1.76
NCSA	1,068	0.05	1,122	0.05	-2.78
Jetty	1,038	0.04	1,028	0.04	3.13
AppleShareIP	1,007	0.04	1,069	0.04	-3.79
Apache-Coyote	1,004	0.04	807	0.03	27.07
httpd+ssl	964	0.04	995	0.04	-1.04
squid	863	0.04	830	0.03	6.20
WDaemon	830	0.04	814	0.03	4.14
SAMBAR	789	0.03	830	0.03	-2.91
Cougar	781	0.03	782	0.03	2.01
thttpd	747	0.03	747	0.03	2.14
CommuniGatePro	709	0.03	720	0.03	0.58
AnWeb	695	0.03	704	0.03	0.83
AOLserver	682	0.03	702	0.03	-0.77
Sun-ONE-Web-Server	660	0.03	558	0.02	20.81
Boa	617	0.03	635	0.03	-0.76
Xitami	611	0.03	636	0.03	-1.88
WWW	608	0.03	615	0.03	0.97
Orion	578	0.02	595	0.02	-0.78
Lasso	577	0.02	604	0.03	-2.43
OSU	524	0.02	530	0.02	0.98
HPWB	511	0.02	559	0.02	-6.63
Roxen	503	0.02	536	0.02	-4.15
IceWarp	469	0.02	462	0.02	3.68
Roxen·Challenger	463	0.02	504	0.02	-6.17
Oracle_Web_Listener	446	0.02	495	0.02	-7.97
Web	443	0.02	449	0.02	0.77
CERN	419	0.02	449	0.02	-4.69
4D_WebStar_D	414	0.02	432	0.02	-2.12
Squid	388	0.02	406	0.02	-2.39
Statistics	384	0.02	394	0.02	-0.46
Netscape-Communications	359	0.02	385	0.02	-4.76
EZproxy	315	0.01	306	0.01	5.14
MACOS_Personal_Websharing	310	0.01	334	0.01	-5.20
Novell-HTTP-Server	307	0.01	330	0.01	-4.98
WebSphere	286	0.01	267	0.01	9.41
Ultraseek	283	0.01	279	0.01	3.60
Domino-Go-Webserver	283	0.01	301	0.01	-3.97
cpsrvd	274	0.01	278	0.01	0.67
Inktomi	274	0.01	291	0.01	-3.83
oXeo	247	0.01	292	0.01	-13.60
OpenSA	243	0.01	256	0.01	-3.05
NetCache	243	0.01	222	0.01	11.80
DeleGate	243	0.01	245	0.01	1.30
Apache-NeoNova	229	0.01	240	0.01	-2.54
UserLand	224	0.01	221	0.01	3.52
Tcl-Webserver	217	0.01	221	0.01	0.29
Red	216	0.01	220	0.01	0.28
MHttpd	204	0.01	210	0.01	-0.78
WebtoB	186	0.01	180	0.01	5.54
Oracle-Application-Server-10g	183	0.01	0	0.00	N/A
AkamaiGHost	180	0.01	166	0.01	10.75
JRun	173	0.01	183	0.01	-3.44
Web_Server_4D	172	0.01	184	0.01	-4.52
Abyss	172	0.01	165	0.01	6.47
Internet	167	0.01	161	0.01	5.94
Caudium	165	0.01	163	0.01	3.39
OmniHTTPd	164	0.01	184	0.01	-8.96
JavaWebServer	164	0.01	171	0.01	-2.04
Worldgroup	163	0.01	172	0.01	-3.21
MacHTTP	162	0.01	175	0.01	-5.45
Purveyor	156	0.01	161	0.01	-1.03
IBM	156	0.01	161	0.01	-1.03
QuidProQuo	154	0.01	163	0.01	-3.50
Powered	150	0.01	145	0.01	5.66
NaviServer	147	0.01	156	0.01	-3.76
Tomcat	143	0.01	164	0.01	-10.94
Netscape-Commerce	142	0.01	152	0.01	-4.58
Jeus	142	0.01	0	0.00	N/A
MDNServer	141	0.01	142	0.01	1.42
HP-UX_Apache-based_Web_Server	136	0.01	155	0.01	-10.38

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.