You are viewing an outdated report.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) 13,960,956 hostnames, but only 2,616,078 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	March 2005 Count	March 2005 %	February 2005 Count	February 2005 %	Growth %
Apache	1,441,644	55.11	1,426,548	55.04	0.12
Microsoft-IIS	855,184	32.69	848,716	32.75	-0.18
null	76,608	2.93	73,471	2.83	3.30
Rapidsite	71,568	2.74	72,932	2.81	-2.79
Netscape-Enterprise	21,836	0.83	21,988	0.85	-1.62
Lotus-Domino	15,716	0.60	15,711	0.61	-0.90
Apache-AdvancedExtranetServer	10,519	0.40	10,445	0.40	-0.23
A	10,119	0.39	9,987	0.39	0.38
IdeaWebServer	5,606	0.21	5,518	0.21	0.65
Zeus	5,596	0.21	5,650	0.22	-1.88
Apache-Coyote	5,069	0.19	4,642	0.18	8.18
WebSTAR	3,845	0.15	3,900	0.15	-2.33
WN	3,684	0.14	3,729	0.14	-2.13
Ipswitch-IMail	3,602	0.14	3,609	0.14	-1.12
WebSitePro	3,449	0.13	3,517	0.14	-2.85
IBM_HTTP_SERVER	3,036	0.12	3,059	0.12	-1.68
Zope	2,981	0.11	2,889	0.11	2.22
Sun-ONE-Web-Server	2,634	0.10	2,516	0.10	3.71
WebSite	2,487	0.10	2,558	0.10	-3.68
Stronghold	2,442	0.09	2,508	0.10	-3.54
IBM_HTTP_Server	2,176	0.08	2,130	0.08	1.21
WebServer	2,093	0.08	2,006	0.08	3.36
Oracle	2,004	0.08	2,003	0.08	-0.88
FileMakerPro	1,996	0.08	1,998	0.08	-1.03
Resin	1,940	0.07	1,874	0.07	2.56
NetWare-Enterprise-Web-Server	1,901	0.07	1,930	0.07	-2.42
4D_WebSTAR_S	1,467	0.06	1,458	0.06	-0.32
FirstClass	1,419	0.05	1,393	0.05	0.92
Netscape-FastTrack	1,352	0.05	1,378	0.05	-2.80
Jetty	1,293	0.05	1,251	0.05	2.39
squid	1,266	0.05	1,231	0.05	1.88
IBM-HTTP-Server	1,191	0.05	1,219	0.05	-3.21
WebLogic	1,163	0.04	1,175	0.05	-1.94
httpd+ssl	1,106	0.04	1,100	0.04	-0.39
Oracle9iAS	1,098	0.04	1,100	0.04	-1.11
Cougar	1,052	0.04	1,020	0.04	2.18
WDaemon	1,035	0.04	1,027	0.04	-0.16
Boa	937	0.04	930	0.04	-0.19
thttpd	933	0.04	890	0.03	3.85
IceWarp	895	0.03	879	0.03	0.87
III	892	0.03	888	0.03	-0.49
NCSA	883	0.03	888	0.03	-1.49
AnWeb	843	0.03	820	0.03	1.85
CommuniGatePro	835	0.03	819	0.03	1.00
SAMBAR	777	0.03	775	0.03	-0.68
AOLserver	761	0.03	746	0.03	1.06
AppleShareIP	760	0.03	789	0.03	-4.57
Web	746	0.03	743	0.03	-0.53
Oracle-Application-Server-10g	719	0.03	674	0.03	5.68
Orion	579	0.02	587	0.02	-2.28
Xitami	569	0.02	560	0.02	0.66
WebSphere	526	0.02	481	0.02	8.34
DeleGate	498	0.02	499	0.02	-1.13
Roxen	480	0.02	484	0.02	-1.75
OSU	476	0.02	483	0.02	-2.37
Simple,	469	0.02	477	0.02	-2.59
EZproxy	456	0.02	445	0.02	1.52
4D_WebStar_D	448	0.02	449	0.02	-1.15
HPWB	443	0.02	455	0.02	-3.55
cpsrvd	411	0.02	395	0.02	3.08
oXeo	390	0.01	426	0.02	-9.30
Roxen·Challenger	372	0.01	393	0.02	-6.23
Squid	357	0.01	381	0.01	-7.17
Ultraseek	347	0.01	334	0.01	2.92
NetCache	347	0.01	341	0.01	0.81
CERN	339	0.01	352	0.01	-4.59
Oracle_Web_Listener	329	0.01	343	0.01	-4.98
Tcl-Webserver	313	0.01	295	0.01	5.11
AkamaiGHost	309	0.01	343	0.01	-10.75
WebtoB	305	0.01	297	0.01	1.74
Apache-NeoNova	290	0.01	282	0.01	1.88
Statistics	259	0.01	266	0.01	-3.54
OpenSA	251	0.01	246	0.01	1.08
Abyss	247	0.01	237	0.01	3.25
Domino-Go-Webserver	235	0.01	239	0.01	-2.59
Powered	234	0.01	232	0.01	-0.08
Novell-HTTP-Server	223	0.01	222	0.01	-0.49
GWS	222	0.01	220	0.01	-0.03
Blocked	222	0.01	206	0.01	6.76
UserLand	218	0.01	225	0.01	-4.01
Inktomi	217	0.01	219	0.01	-1.84
Netscape-Communications	213	0.01	222	0.01	-4.95
Red	204	0.01	204	0.01	-0.93
Lasso	200	0.01	197	0.01	0.58
JRun	199	0.01	206	0.01	-4.30
IBM	176	0.01	179	0.01	-2.59
Caudium	175	0.01	167	0.01	3.81
Web_Server_4D	172	0.01	176	0.01	-3.18
Indy	172	0.01	164	0.01	3.90
httpd	167	0.01	161	0.01	2.76
nginx	163	0.01	0	0.00	N/A
OmniHTTPd	162	0.01	166	0.01	-3.32
SilverStream	160	0.01	160	0.01	-0.93
Internet	157	0.01	165	0.01	-5.74
lighttpd	148	0.01	0	0.00	N/A
Polaris	144	0.01	141	0.01	1.18
Jeus	143	0.01	140	0.01	1.19
MacHTTP	142	0.01	148	0.01	-4.95
Tomcat	141	0.01	0	0.00	N/A
Fujitsu-InfoProvider-Pro	141	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.