You are viewing an outdated report.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) 24,709,445 hostnames, but only 3,191,362 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	June 2007 Count	June 2007 %	May 2007 Count	May 2007 %	Growth %
Apache	1,827,237	57.26	1,814,218	57.23	0.05
Microsoft-IIS	915,269	28.68	912,398	28.78	-0.35
null	182,658	5.72	179,184	5.65	1.26
Rapidsite	66,053	2.07	66,109	2.09	-0.75
Apache-Coyote	18,067	0.57	17,572	0.55	2.14
A	14,306	0.45	14,175	0.45	0.26
Lotus-Domino	14,278	0.45	14,343	0.45	-1.11
IdeaWebServer	12,927	0.41	12,505	0.39	2.69
Netscape-Enterprise	12,381	0.39	12,490	0.39	-1.53
lighttpd	5,541	0.17	5,236	0.17	5.12
Apache-AdvancedExtranetServer	5,418	0.17	5,597	0.18	-3.84
NOYB	5,376	0.17	5,287	0.17	1.01
nginx	5,273	0.17	5,011	0.16	4.53
Zeus	4,652	0.15	4,690	0.15	-1.47
Zope	4,246	0.13	4,258	0.13	-0.94
IBM_HTTP_Server	4,132	0.13	3,984	0.13	3.03
Sun-ONE-Web-Server	3,898	0.12	3,883	0.12	-0.28
WebServer	3,787	0.12	3,724	0.12	1.02
Resin	2,969	0.09	2,939	0.09	0.35
Oracle-Application-Server-10g	2,805	0.09	2,736	0.09	1.84
squid	2,581	0.08	2,551	0.08	0.51
IBM_HTTP_SERVER	2,243	0.07	2,238	0.07	-0.44
Ipswitch-IMail	2,161	0.07	2,252	0.07	-4.68
WebSTAR	1,945	0.06	2,041	0.06	-5.33
Cougar	1,800	0.06	1,809	0.06	-1.16
Oracle	1,561	0.05	1,561	0.05	-0.66
Jetty	1,546	0.05	1,549	0.05	-0.85
IceWarp	1,456	0.05	1,455	0.05	-0.59
GWS	1,437	0.05	1,401	0.04	1.89
WDaemon	1,348	0.04	1,347	0.04	-0.59
WebLogic	1,316	0.04	1,302	0.04	0.41
FileMakerPro	1,315	0.04	1,375	0.04	-5.00
WebSitePro	1,278	0.04	1,390	0.04	-8.67
Boa	1,243	0.04	1,282	0.04	-3.68
WebSite	1,200	0.04	1,220	0.04	-2.29
BIG-IP	1,200	0.04	1,166	0.04	2.23
WebServerX	1,149	0.04	1,005	0.03	13.57
4D_WebSTAR_S	1,048	0.03	1,083	0.03	-3.87
AnWeb	1,043	0.03	975	0.03	6.27
thttpd	1,027	0.03	1,021	0.03	-0.08
III	1,000	0.03	999	0.03	-0.56
CommuniGatePro	979	0.03	971	0.03	0.16
httpd+ssl	922	0.03	938	0.03	-2.36
EZproxy	791	0.02	769	0.02	2.18
AOLserver	754	0.02	763	0.02	-1.83
PowerSchool	736	0.02	739	0.02	-1.07
Stronghold	724	0.02	741	0.02	-2.94
AkamaiGHost	723	0.02	678	0.02	5.93
Web	692	0.02	693	0.02	-0.81
4D_WebStar_D	613	0.02	616	0.02	-1.15
Oracle9iAS	604	0.02	615	0.02	-2.44
NetWare-Enterprise-Web-Server	600	0.02	659	0.02	-9.56
cpsrvd	586	0.02	586	0.02	-0.66
SAMBAR	586	0.02	606	0.02	-3.94
EdgePrism	551	0.02	492	0.02	11.25
WebtoB	546	0.02	547	0.02	-0.84
DeleGate	539	0.02	524	0.02	2.18
LiteSpeed	538	0.02	500	0.02	6.89
Netscape-FastTrack	516	0.02	542	0.02	-5.43
NetCache	511	0.02	522	0.02	-2.76
redir-httpd	509	0.02	507	0.02	-0.27
Orion	475	0.01	500	0.02	-5.63
Roxen	440	0.01	431	0.01	1.41
NCSA	417	0.01	413	0.01	0.30
IBM-HTTP-Server	407	0.01	418	0.01	-3.28
ListManagerWeb	391	0.01	366	0.01	6.12
Ultraseek	377	0.01	375	0.01	-0.13
Abyss	377	0.01	384	0.01	-2.47
WebSphere	373	0.01	388	0.01	-4.50
FirstClass	356	0.01	379	0.01	-6.69
OSU	348	0.01	351	0.01	-1.51
Xitami	337	0.01	362	0.01	-7.52
Acenet	329	0.01	344	0.01	-4.99
Nost	284	0.01	287	0.01	-1.70
Power	281	0.01	281	0.01	-0.66
AppleShareIP	277	0.01	292	0.01	-5.77
JRun	276	0.01	262	0.01	4.65
httpd	262	0.01	259	0.01	0.49
ENIAC	262	0.01	0	0.00	N/A
""	255	0.01	249	0.01	1.73
Indy	253	0.01	256	0.01	-1.83
Jeus	248	0.01	241	0.01	2.22
IIS	238	0.01	242	0.01	-2.30
WWW	232	0.01	222	0.01	3.81
Secured	224	0.01	192	0.01	15.89
Microsoft-HTTPAPI	217	0.01	218	0.01	-1.12
Tcl-Webserver	206	0.01	209	0.01	-2.09
NS_6.1	201	0.01	193	0.01	3.46
Polaris	195	0.01	200	0.01	-3.15
Server	188	0.01	177	0.01	5.51
UserLand	187	0.01	193	0.01	-3.75
Apache-NeoNova	183	0.01	185	0.01	-1.74
Mittwald	182	0.01	174	0.01	3.91
HPWB	179	0.01	182	0.01	-2.30
Webserver	175	0.01	184	0.01	-5.52
Powered	173	0.01	177	0.01	-2.91
Sun-Java-System-Web-Server	172	0.01	0	0.00	N/A
Blocked	170	0.01	0	0.00	N/A
NAB	165	0.01	172	0.01	-4.70
FJapache	165	0.01	162	0.01	1.18

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.