You are viewing an outdated report.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) 21,566,239 hostnames, but only 3,034,344 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	December 2006 Count	December 2006 %	November 2006 Count	November 2006 %	Growth %
Apache	1,732,813	57.11	1,731,699	57.10	0.00
Microsoft-IIS	893,427	29.44	895,394	29.53	-0.28
null	153,222	5.05	150,742	4.97	1.58
Rapidsite	66,468	2.19	67,071	2.21	-0.96
Apache-Coyote	14,706	0.48	14,423	0.48	1.90
Lotus-Domino	14,585	0.48	14,680	0.48	-0.71
Netscape-Enterprise	14,207	0.47	14,497	0.48	-2.06
A	13,157	0.43	13,095	0.43	0.41
IdeaWebServer	10,267	0.34	10,078	0.33	1.81
Apache-AdvancedExtranetServer	6,442	0.21	6,733	0.22	-4.38
NOYB	4,992	0.16	5,030	0.17	-0.81
Zeus	4,787	0.16	4,805	0.16	-0.43
lighttpd	4,005	0.13	3,463	0.11	15.58
Zope	3,977	0.13	3,979	0.13	-0.11
Sun-ONE-Web-Server	3,751	0.12	3,706	0.12	1.15
IBM_HTTP_Server	3,696	0.12	3,639	0.12	1.51
WebServer	3,314	0.11	3,284	0.11	0.85
nginx	3,222	0.11	3,013	0.10	6.87
Resin	2,705	0.09	2,743	0.09	-1.44
Ipswitch-IMail	2,631	0.09	2,730	0.09	-3.68
IBM_HTTP_SERVER	2,445	0.08	2,515	0.08	-2.84
WebSTAR	2,412	0.08	2,432	0.08	-0.88
Oracle-Application-Server-10g	2,391	0.08	2,347	0.08	1.81
squid	2,276	0.08	2,302	0.08	-1.19
WebSitePro	1,734	0.06	1,776	0.06	-2.42
Oracle	1,607	0.05	1,642	0.05	-2.19
Cougar	1,584	0.05	1,556	0.05	1.74
FileMakerPro	1,482	0.05	1,501	0.05	-1.32
Jetty	1,468	0.05	1,483	0.05	-1.07
WebSite	1,341	0.04	1,320	0.04	1.53
IceWarp	1,341	0.04	1,338	0.04	0.16
WebLogic	1,324	0.04	1,333	0.04	-0.73
WDaemon	1,246	0.04	1,245	0.04	0.02
4D_WebSTAR_S	1,218	0.04	1,248	0.04	-2.46
GWS	1,082	0.04	1,038	0.03	4.18
Boa	1,040	0.03	1,063	0.04	-2.22
thttpd	1,022	0.03	1,024	0.03	-0.25
III	970	0.03	967	0.03	0.25
AnWeb	960	0.03	991	0.03	-3.19
CommuniGatePro	950	0.03	959	0.03	-1.00
httpd+ssl	941	0.03	948	0.03	-0.80
BIG-IP	900	0.03	824	0.03	9.16
Stronghold	833	0.03	858	0.03	-2.97
NetWare-Enterprise-Web-Server	802	0.03	839	0.03	-4.47
AOLserver	771	0.03	770	0.03	0.07
AkamaiGHost	755	0.02	745	0.02	1.28
EZproxy	724	0.02	714	0.02	1.34
Oracle9iAS	709	0.02	733	0.02	-3.33
Netscape-FastTrack	655	0.02	679	0.02	-3.59
Web	643	0.02	658	0.02	-2.34
SAMBAR	638	0.02	635	0.02	0.41
PowerSchool	631	0.02	636	0.02	-0.85
NetCache	575	0.02	562	0.02	2.25
4D_WebStar_D	573	0.02	578	0.02	-0.92
FirstClass	551	0.02	607	0.02	-9.28
cpsrvd	550	0.02	548	0.02	0.31
Orion	529	0.02	527	0.02	0.32
DeleGate	520	0.02	525	0.02	-1.01
IBM-HTTP-Server	511	0.02	534	0.02	-4.36
redir-httpd	505	0.02	502	0.02	0.54
WebtoB	499	0.02	491	0.02	1.57
NCSA	474	0.02	476	0.02	-0.48
Roxen	436	0.01	433	0.01	0.63
WebServerX	435	0.01	311	0.01	39.79
Acenet	394	0.01	0	0.00	N/A
Xitami	381	0.01	395	0.01	-3.60
Ultraseek	374	0.01	373	0.01	0.21
OSU	366	0.01	369	0.01	-0.87
WebSphere	365	0.01	380	0.01	-4.00
AppleShareIP	358	0.01	379	0.01	-5.60
Abyss	336	0.01	340	0.01	-1.24
ListManagerWeb	311	0.01	301	0.01	3.26
LiteSpeed	309	0.01	287	0.01	7.60
EdgePrism	292	0.01	287	0.01	1.68
""	255	0.01	252	0.01	1.13
JRun	248	0.01	242	0.01	2.42
IIS	242	0.01	226	0.01	7.02
HPWB	230	0.01	241	0.01	-4.62
Indy	228	0.01	225	0.01	1.27
Nost	221	0.01	220	0.01	0.39
Jeus	213	0.01	204	0.01	4.35
httpd	211	0.01	214	0.01	-1.46
UserLand	210	0.01	211	0.01	-0.53
Polaris	204	0.01	205	0.01	-0.55
eSoft	201	0.01	206	0.01	-2.49
Tcl-Webserver	197	0.01	197	0.01	-0.06
NAB	189	0.01	187	0.01	1.01
OpenSA	188	0.01	189	0.01	-0.59
Squid	186	0.01	189	0.01	-1.65
Microsoft-HTTPAPI	185	0.01	196	0.01	-5.67
Roxen·Challenger	184	0.01	186	0.01	-1.13
Power	184	0.01	170	0.01	8.17
Webserver	183	0.01	189	0.01	-3.23
WWW	179	0.01	173	0.01	3.41
Simple,	177	0.01	187	0.01	-5.40
Disallowed	176	0.01	176	0.01	-0.06
Powered	175	0.01	0	0.00	N/A
Apache-NeoNova	173	0.01	174	0.01	-0.63
Oracle_Web_Listener	170	0.01	182	0.01	-6.65
Blocked	170	0.01	172	0.01	-1.22

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.