You are viewing an outdated report.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) 19,784,900 hostnames, but only 2,580,745 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	January 2005 Count	January 2005 %	December 2004 Count	December 2004 %	Growth %
Apache	1,419,871	55.02	1,401,684	54.95	0.13
Microsoft-IIS	846,358	32.80	839,897	32.92	-0.39
Rapidsite	73,969	2.87	73,848	2.89	-0.99
null	70,772	2.74	66,767	2.62	4.78
Netscape-Enterprise	22,496	0.87	22,876	0.90	-2.79
Lotus-Domino	15,725	0.61	15,804	0.62	-1.65
Apache-AdvancedExtranetServer	10,387	0.40	10,250	0.40	0.17
A	9,895	0.38	9,739	0.38	0.43
Zeus	5,663	0.22	5,661	0.22	-1.12
IdeaWebServer	5,407	0.21	5,285	0.21	1.13
Apache-Coyote	4,316	0.17	3,886	0.15	9.79
WebSTAR	4,036	0.16	4,198	0.16	-4.97
WN	3,819	0.15	3,864	0.15	-2.30
WebSitePro	3,583	0.14	3,732	0.15	-5.10
Ipswitch-IMail	3,577	0.14	3,573	0.14	-1.04
IBM_HTTP_SERVER	3,027	0.12	2,962	0.12	1.02
Zope	2,838	0.11	2,782	0.11	0.84
WebSite	2,636	0.10	2,626	0.10	-0.78
Stronghold	2,631	0.10	2,694	0.11	-3.46
Sun-ONE-Web-Server	2,379	0.09	2,283	0.09	3.00
IBM_HTTP_Server	2,153	0.08	2,103	0.08	1.20
Oracle	2,020	0.08	1,999	0.08	-0.11
FileMakerPro	1,995	0.08	2,022	0.08	-2.47
NetWare-Enterprise-Web-Server	1,982	0.08	2,065	0.08	-5.13
WebServer	1,949	0.08	1,860	0.07	3.58
Resin	1,833	0.07	1,766	0.07	2.60
4D_WebSTAR_S	1,436	0.06	1,429	0.06	-0.67
Netscape-FastTrack	1,432	0.06	1,464	0.06	-3.31
FirstClass	1,408	0.05	1,379	0.05	0.93
IBM-HTTP-Server	1,234	0.05	1,250	0.05	-2.42
Jetty	1,222	0.05	1,181	0.05	2.28
squid	1,214	0.05	1,150	0.05	4.35
WebLogic	1,158	0.04	1,153	0.05	-0.72
Oracle9iAS	1,114	0.04	1,116	0.04	-1.33
httpd+ssl	1,091	0.04	1,078	0.04	0.04
Cougar	1,000	0.04	964	0.04	2.54
WDaemon	994	0.04	964	0.04	1.92
NCSA	918	0.04	933	0.04	-2.74
Boa	909	0.04	917	0.04	-2.01
thttpd	889	0.03	858	0.03	2.42
III	884	0.03	868	0.03	0.67
IceWarp	869	0.03	813	0.03	5.66
AnWeb	846	0.03	798	0.03	4.79
CommuniGatePro	818	0.03	801	0.03	0.95
AppleShareIP	815	0.03	815	0.03	-1.15
SAMBAR	779	0.03	786	0.03	-2.03
AOLserver	748	0.03	740	0.03	-0.08
Web	732	0.03	748	0.03	-3.27
Orion	598	0.02	602	0.02	-1.81
Oracle-Application-Server-10g	598	0.02	543	0.02	8.86
Xitami	581	0.02	592	0.02	-2.99
Roxen	505	0.02	494	0.02	1.05
DeleGate	499	0.02	501	0.02	-1.55
OSU	483	0.02	492	0.02	-2.96
Simple,	466	0.02	465	0.02	-0.94
HPWB	460	0.02	466	0.02	-2.42
4D_WebStar_D	450	0.02	441	0.02	0.87
WebSphere	445	0.02	406	0.02	8.34
EZproxy	421	0.02	414	0.02	0.52
oXeo	415	0.02	428	0.02	-4.15
Roxen·Challenger	397	0.02	399	0.02	-1.65
Squid	392	0.02	387	0.02	0.13
cpsrvd	385	0.01	364	0.01	4.55
CERN	374	0.01	366	0.01	1.01
Oracle_Web_Listener	355	0.01	359	0.01	-2.25
Ultraseek	335	0.01	330	0.01	0.35
NetCache	331	0.01	320	0.01	2.25
Statistics	308	0.01	349	0.01	-12.76
AkamaiGHost	304	0.01	334	0.01	-10.03
WebtoB	294	0.01	285	0.01	1.97
Tcl-Webserver	284	0.01	281	0.01	-0.10
Apache-NeoNova	283	0.01	280	0.01	-0.09
Domino-Go-Webserver	249	0.01	250	0.01	-1.55
OpenSA	248	0.01	245	0.01	0.06
Abyss	239	0.01	211	0.01	11.97
Netscape-Communications	233	0.01	249	0.01	-7.50
Inktomi	229	0.01	238	0.01	-4.89
UserLand	226	0.01	221	0.01	1.08
Powered	217	0.01	341	0.01	-37.10
Novell-HTTP-Server	216	0.01	214	0.01	-0.23
GWS	216	0.01	211	0.01	1.19
Lasso	207	0.01	201	0.01	1.80
Red	206	0.01	208	0.01	-2.10
JRun	198	0.01	192	0.01	1.94
Web_Server_4D	177	0.01	177	0.01	-1.15
Caudium	170	0.01	159	0.01	5.69
httpd	162	0.01	165	0.01	-2.95
WindWeb	162	0.01	158	0.01	1.35
OmniHTTPd	162	0.01	166	0.01	-3.53
Internet	162	0.01	161	0.01	-0.54
SilverStream	160	0.01	162	0.01	-2.37
Indy	159	0.01	149	0.01	5.48
IBM	158	0.01	156	0.01	0.12
server*x.x.x	157	0.01	145	0.01	7.03
MacHTTP	151	0.01	150	0.01	-0.49
Worldgroup	145	0.01	145	0.01	-1.15
JavaWebServer	145	0.01	144	0.01	-0.47
Purveyor	143	0.01	0	0.00	N/A
Fujitsu-InfoProvider-Pro	141	0.01	144	0.01	-3.21
Tomcat	140	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.