You are viewing an outdated report.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) 17,162,622 hostnames, but only 2,766,597 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 2006 Count	January 2006 %	December 2005 Count	December 2005 %	Growth %
Apache	1,544,828	55.84	1,526,015	55.75	0.16
Microsoft-IIS	866,629	31.32	861,538	31.47	-0.47
null	108,304	3.91	104,541	3.82	2.50
Rapidsite	69,023	2.49	69,131	2.53	-1.21
Netscape-Enterprise	17,651	0.64	17,692	0.65	-1.29
Lotus-Domino	15,155	0.55	15,162	0.55	-1.11
A	11,351	0.41	11,186	0.41	0.40
Apache-Coyote	9,295	0.34	8,801	0.32	4.49
Apache-AdvancedExtranetServer	9,198	0.33	9,404	0.34	-3.23
IdeaWebServer	7,275	0.26	6,867	0.25	4.82
Zeus	5,316	0.19	5,355	0.20	-1.78
Sun-ONE-Web-Server	3,630	0.13	3,532	0.13	1.69
Zope	3,451	0.12	3,340	0.12	2.23
Ipswitch-IMail	3,396	0.12	3,450	0.13	-2.61
WebSTAR	3,006	0.11	3,083	0.11	-3.53
WN	2,898	0.10	2,987	0.11	-4.01
IBM_HTTP_SERVER	2,879	0.10	2,906	0.11	-1.98
IBM_HTTP_Server	2,678	0.10	2,601	0.10	1.87
NOYB	2,641	0.10	2,590	0.09	0.89
WebServer	2,599	0.09	2,516	0.09	2.20
WebSitePro	2,490	0.09	2,543	0.09	-3.12
Resin	2,332	0.08	2,288	0.08	0.84
WebSite	2,021	0.07	2,039	0.07	-1.93
Oracle	1,914	0.07	1,948	0.07	-2.79
squid	1,762	0.06	1,707	0.06	2.13
FileMakerPro	1,710	0.06	1,708	0.06	-0.94
lighttpd	1,619	0.06	1,392	0.05	15.08
nginx	1,553	0.06	1,389	0.05	10.62
Oracle-Application-Server-10g	1,489	0.05	1,385	0.05	6.37
Stronghold	1,476	0.05	1,519	0.06	-3.86
4D_WebSTAR_S	1,457	0.05	1,461	0.05	-1.33
FirstClass	1,406	0.05	1,380	0.05	0.80
Jetty	1,388	0.05	1,385	0.05	-0.85
WebLogic	1,291	0.05	1,269	0.05	0.66
NetWare-Enterprise-Web-Server	1,262	0.05	1,311	0.05	-4.76
Cougar	1,215	0.04	1,185	0.04	1.45
WDaemon	1,111	0.04	1,106	0.04	-0.61
IceWarp	1,104	0.04	1,060	0.04	3.05
thttpd	1,026	0.04	1,002	0.04	1.31
Boa	1,003	0.04	1,020	0.04	-2.71
Netscape-FastTrack	959	0.03	1,020	0.04	-6.98
III	932	0.03	931	0.03	-0.95
httpd+ssl	928	0.03	949	0.03	-3.25
Oracle9iAS	911	0.03	921	0.03	-2.13
AnWeb	894	0.03	830	0.03	6.57
CommuniGatePro	886	0.03	893	0.03	-1.83
AOLserver	759	0.03	741	0.03	1.34
IBM-HTTP-Server	748	0.03	762	0.03	-2.88
Web	732	0.03	716	0.03	1.15
SAMBAR	670	0.02	668	0.02	-0.76
NCSA	607	0.02	636	0.02	-5.57
EZproxy	581	0.02	550	0.02	4.52
UserLand	577	0.02	590	0.02	-3.24
Orion	559	0.02	562	0.02	-1.59
AppleShareIP	531	0.02	539	0.02	-2.53
4D_WebStar_D	518	0.02	509	0.02	0.69
WebSphere	510	0.02	492	0.02	2.56
DeleGate	504	0.02	500	0.02	-0.27
redir-httpd	499	0.02	500	0.02	-1.26
cpsrvd	465	0.02	475	0.02	-3.14
NetCache	462	0.02	456	0.02	0.24
Xitami	456	0.02	455	0.02	-0.84
AkamaiGHost	433	0.02	599	0.02	-28.48
Roxen	418	0.02	419	0.02	-1.30
OSU	405	0.01	409	0.01	-2.03
WebtoB	387	0.01	390	0.01	-1.82
Simple,	387	0.01	402	0.01	-4.75
GWS	387	0.01	362	0.01	5.77
BIG-IP	381	0.01	331	0.01	13.89
Ultraseek	378	0.01	381	0.01	-1.84
Blocked	328	0.01	286	0.01	13.47
HPWB	314	0.01	329	0.01	-5.57
Apache-NeoNova	295	0.01	292	0.01	-0.04
Abyss	288	0.01	275	0.01	3.62
PowerSchool	276	0.01	233	0.01	17.20
Roxen·Challenger	241	0.01	255	0.01	-6.49
Squid	240	0.01	262	0.01	-9.37
Tcl-Webserver	239	0.01	252	0.01	-6.16
Oracle_Web_Listener	232	0.01	232	0.01	-1.06
CERN	230	0.01	230	0.01	-1.06
OpenSA	218	0.01	222	0.01	-2.84
JRun	215	0.01	218	0.01	-2.42
kucci	210	0.01	199	0.01	4.41
Statistics	206	0.01	211	0.01	-3.40
eSoft	203	0.01	206	0.01	-2.50
Webserver	202	0.01	206	0.01	-2.98
Powered	194	0.01	197	0.01	-2.57
Polaris	191	0.01	192	0.01	-1.57
Indy	181	0.01	192	0.01	-6.73
httpd	178	0.01	177	0.01	-0.50
Jeus	174	0.01	159	0.01	8.27
Domino-Go-Webserver	169	0.01	177	0.01	-5.53
IBM	168	0.01	165	0.01	0.74
Caudium	162	0.01	171	0.01	-6.27
Inktomi	160	0.01	166	0.01	-4.64
Red	158	0.01	165	0.01	-5.26
Lasso	158	0.01	158	0.01	-1.06
Internet	157	0.01	165	0.01	-5.86
ListManagerWeb	155	0.01	0	0.00	N/A
""	153	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.