You are viewing an outdated report.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) 25,714,678 hostnames, but only 3,267,368 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 2007 Count	November 2007 %	October 2007 Count	October 2007 %	Growth %
Apache	1,886,653	57.74	1,887,525	57.75	-0.01
Microsoft-IIS	913,330	27.95	917,931	28.08	-0.47
null	193,853	5.93	190,064	5.82	2.03
Rapidsite	66,712	2.04	66,802	2.04	-0.10
Apache-Coyote	19,985	0.61	19,788	0.61	1.03
A	15,104	0.46	14,944	0.46	1.10
IdeaWebServer	14,696	0.45	14,405	0.44	2.05
Lotus-Domino	13,805	0.42	13,998	0.43	-1.35
Netscape-Enterprise	11,326	0.35	11,643	0.36	-2.69
lighttpd	7,437	0.23	7,038	0.22	5.70
nginx	7,342	0.22	6,816	0.21	7.75
Apache-AdvancedExtranetServer	4,585	0.14	4,810	0.15	-4.65
IBM_HTTP_Server	4,531	0.14	4,416	0.14	2.64
Zeus	4,519	0.14	4,554	0.14	-0.74
Zope	4,329	0.13	4,290	0.13	0.94
WebServer	4,129	0.13	4,002	0.12	3.21
Sun-ONE-Web-Server	3,924	0.12	3,897	0.12	0.72
NOYB	3,216	0.10	3,427	0.10	-6.13
Resin	3,042	0.09	3,095	0.09	-1.68
squid	3,031	0.09	2,959	0.09	2.47
Oracle-Application-Server-10g	3,008	0.09	3,020	0.09	-0.37
IBM_HTTP_SERVER	2,068	0.06	2,127	0.07	-2.74
Cougar	1,899	0.06	1,889	0.06	0.56
WebServerX	1,887	0.06	1,469	0.04	28.50
Ipswitch-IMail	1,845	0.06	1,924	0.06	-4.08
WebSTAR	1,614	0.05	1,742	0.05	-7.32
Jetty	1,546	0.05	1,551	0.05	-0.29
IceWarp	1,518	0.05	1,497	0.05	1.43
Oracle	1,503	0.05	1,485	0.05	1.24
GWS	1,435	0.04	1,399	0.04	2.61
WDaemon	1,400	0.04	1,398	0.04	0.17
BIG-IP	1,320	0.04	1,382	0.04	-4.46
FileMakerPro	1,209	0.04	1,236	0.04	-2.15
WebLogic	1,204	0.04	1,446	0.04	-16.71
WebSite	1,168	0.04	1,169	0.04	-0.05
Boa	1,142	0.03	1,159	0.04	-1.44
WebSitePro	1,097	0.03	1,185	0.04	-7.40
AkamaiGHost	1,048	0.03	788	0.02	33.04
III	1,008	0.03	1,015	0.03	-0.66
thttpd	987	0.03	1,000	0.03	-1.27
CommuniGatePro	969	0.03	992	0.03	-2.29
4D_WebSTAR_S	961	0.03	989	0.03	-2.80
AnWeb	935	0.03	1,050	0.03	-10.92
EZproxy	874	0.03	855	0.03	2.25
httpd+ssl	827	0.03	859	0.03	-3.69
PowerSchool	820	0.03	792	0.02	3.57
LiteSpeed	765	0.02	720	0.02	6.28
AOLserver	730	0.02	733	0.02	-0.38
Web	701	0.02	725	0.02	-3.28
EdgePrism	652	0.02	627	0.02	4.02
Stronghold	631	0.02	642	0.02	-1.68
WebtoB	627	0.02	600	0.02	4.53
cpsrvd	623	0.02	626	0.02	-0.45
4D_WebStar_D	621	0.02	620	0.02	0.19
SAMBAR	549	0.02	546	0.02	0.58
DeleGate	541	0.02	544	0.02	-0.52
Oracle9iAS	521	0.02	538	0.02	-3.13
NetWare-Enterprise-Web-Server	519	0.02	540	0.02	-3.86
redir-httpd	509	0.02	506	0.02	0.62
ListManagerWeb	441	0.01	429	0.01	2.83
Orion	424	0.01	446	0.01	-4.90
NetCache	421	0.01	516	0.02	-18.38
Roxen	420	0.01	435	0.01	-3.42
Netscape-FastTrack	420	0.01	444	0.01	-5.38
WebSphere	401	0.01	405	0.01	-0.96
httpd	399	0.01	365	0.01	9.35
NCSA	382	0.01	393	0.01	-2.77
Abyss	381	0.01	376	0.01	1.36
WWW	375	0.01	365	0.01	2.77
IBM-HTTP-Server	362	0.01	380	0.01	-4.71
Blocked	360	0.01	334	0.01	7.82
Ultraseek	357	0.01	356	0.01	0.31
Acenet	333	0.01	353	0.01	-5.64
Power	331	0.01	328	0.01	0.95
ENIAC	329	0.01	327	0.01	0.64
Xitami	322	0.01	333	0.01	-3.27
OSU	320	0.01	332	0.01	-3.58
""	317	0.01	302	0.01	5.00
JRun	309	0.01	301	0.01	2.69
Sun-Java-System-Web-Server	308	0.01	287	0.01	7.35
BigIP	305	0.01	184	0.01	65.81
Microsoft-HTTPAPI	296	0.01	262	0.01	13.01
Nost	292	0.01	301	0.01	-2.96
NS_6.1	288	0.01	295	0.01	-2.34
FirstClass	266	0.01	275	0.01	-3.24
Secured	262	0.01	265	0.01	-1.10
Indy	251	0.01	254	0.01	-1.15
Server	231	0.01	226	0.01	2.24
AppleShareIP	229	0.01	241	0.01	-4.95
IIS	228	0.01	237	0.01	-3.77
Jeus	220	0.01	221	0.01	-0.42
Mittwald	218	0.01	210	0.01	3.84
gws	217	0.01	220	0.01	-1.33
Polaris	204	0.01	197	0.01	3.59
Tcl-Webserver	189	0.01	192	0.01	-1.53
UserLand	188	0.01	194	0.01	-3.06
FJapache	186	0.01	185	0.01	0.57
Apache-NeoNova	186	0.01	178	0.01	4.53
Fujitsu-InfoProvider-Pro	181	0.01	180	0.01	0.59
CoralWebPrx	181	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.