You are viewing an outdated report.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) 25,274,890 hostnames, but only 3,236,994 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	September 2007 Count	September 2007 %	August 2007 Count	August 2007 %	Growth %
Apache	1,867,402	57.69	1,847,855	57.63	0.10
Microsoft-IIS	912,465	28.19	909,308	28.36	-0.61
null	187,285	5.79	182,482	5.69	1.66
Rapidsite	66,418	2.05	65,990	2.06	-0.31
Apache-Coyote	19,294	0.60	18,624	0.58	2.61
A	14,763	0.46	14,490	0.45	0.92
Lotus-Domino	14,057	0.43	14,052	0.44	-0.92
IdeaWebServer	14,025	0.43	13,571	0.42	2.36
Netscape-Enterprise	11,702	0.36	11,978	0.37	-3.23
lighttpd	6,675	0.21	6,053	0.19	9.23
nginx	6,358	0.20	5,850	0.18	7.65
Apache-AdvancedExtranetServer	4,898	0.15	5,028	0.16	-3.51
Zeus	4,562	0.14	4,587	0.14	-1.49
IBM_HTTP_Server	4,386	0.14	4,288	0.13	1.31
Zope	4,302	0.13	4,214	0.13	1.12
Sun-ONE-Web-Server	3,884	0.12	3,871	0.12	-0.62
WebServer	3,872	0.12	3,836	0.12	-0.02
NOYB	3,353	0.10	3,813	0.12	-12.90
Resin	3,041	0.09	3,000	0.09	0.40
Oracle-Application-Server-10g	2,996	0.09	2,928	0.09	1.35
squid	2,985	0.09	2,727	0.09	8.42
IBM_HTTP_SERVER	2,137	0.07	2,134	0.07	-0.81
Ipswitch-IMail	1,945	0.06	2,006	0.06	-3.96
Cougar	1,847	0.06	1,831	0.06	-0.09
WebSTAR	1,746	0.05	1,815	0.06	-4.72
Jetty	1,543	0.05	1,507	0.05	1.42
Oracle	1,503	0.05	1,544	0.05	-3.58
IceWarp	1,481	0.05	1,469	0.05	-0.14
WebServerX	1,437	0.04	1,367	0.04	4.12
WebLogic	1,431	0.04	1,464	0.05	-3.18
WDaemon	1,372	0.04	1,346	0.04	0.96
GWS	1,355	0.04	1,508	0.05	-11.00
BIG-IP	1,341	0.04	1,323	0.04	0.40
FileMakerPro	1,248	0.04	1,229	0.04	0.58
WebSitePro	1,211	0.04	1,269	0.04	-5.48
Boa	1,174	0.04	1,194	0.04	-2.61
WebSite	1,169	0.04	1,234	0.04	-6.17
AnWeb	1,052	0.03	954	0.03	9.22
AkamaiGHost	1,022	0.03	730	0.02	38.67
III	1,018	0.03	1,003	0.03	0.53
thttpd	1,012	0.03	1,020	0.03	-1.73
4D_WebSTAR_S	992	0.03	1,017	0.03	-3.39
CommuniGatePro	987	0.03	980	0.03	-0.24
httpd+ssl	870	0.03	886	0.03	-2.74
EZproxy	836	0.03	807	0.03	2.61
PowerSchool	771	0.02	723	0.02	5.62
AOLserver	754	0.02	751	0.02	-0.56
Web	719	0.02	706	0.02	0.87
LiteSpeed	705	0.02	648	0.02	7.76
Stronghold	664	0.02	672	0.02	-2.13
4D_WebStar_D	624	0.02	593	0.02	4.23
cpsrvd	614	0.02	604	0.02	0.69
EdgePrism	607	0.02	582	0.02	3.30
WebtoB	589	0.02	577	0.02	1.11
SAMBAR	559	0.02	547	0.02	1.22
Oracle9iAS	546	0.02	571	0.02	-5.29
DeleGate	541	0.02	535	0.02	0.16
NetWare-Enterprise-Web-Server	540	0.02	565	0.02	-5.33
NetCache	513	0.02	514	0.02	-1.14
redir-httpd	507	0.02	509	0.02	-1.34
Netscape-FastTrack	454	0.01	482	0.02	-6.70
Orion	451	0.01	463	0.01	-3.52
Roxen	434	0.01	435	0.01	-1.18
ListManagerWeb	430	0.01	412	0.01	3.38
WebSphere	388	0.01	382	0.01	0.60
IBM-HTTP-Server	387	0.01	383	0.01	0.08
NCSA	381	0.01	398	0.01	-5.18
Abyss	377	0.01	358	0.01	4.31
Ultraseek	364	0.01	370	0.01	-2.56
WWW	360	0.01	344	0.01	3.66
httpd	337	0.01	311	0.01	7.33
OSU	337	0.01	334	0.01	-0.06
Acenet	336	0.01	331	0.01	0.55
Xitami	335	0.01	335	0.01	-0.95
Power	330	0.01	284	0.01	15.09
""	302	0.01	298	0.01	0.38
Nost	298	0.01	292	0.01	1.08
ENIAC	290	0.01	273	0.01	5.22
JRun	289	0.01	277	0.01	3.34
FirstClass	281	0.01	298	0.01	-6.60
Sun-Java-System-Web-Server	277	0.01	240	0.01	14.32
NS_6.1	271	0.01	252	0.01	6.52
Secured	269	0.01	233	0.01	14.35
Microsoft-HTTPAPI	254	0.01	242	0.01	3.96
Indy	252	0.01	244	0.01	2.30
AppleShareIP	247	0.01	244	0.01	0.27
IIS	230	0.01	250	0.01	-8.87
Jeus	221	0.01	224	0.01	-2.28
Server	218	0.01	213	0.01	1.37
gws	203	0.01	0	0.00	N/A
Mittwald	202	0.01	196	0.01	2.08
Polaris	196	0.01	188	0.01	3.26
UserLand	191	0.01	197	0.01	-3.97
Tcl-Webserver	189	0.01	194	0.01	-3.50
Webserver	182	0.01	185	0.01	-2.56
FJapache	182	0.01	180	0.01	0.15
Fujitsu-InfoProvider-Pro	174	0.01	169	0.01	1.98
Apache-NeoNova	174	0.01	176	0.01	-2.08
DinaHTTPd	164	0.01	0	0.00	N/A
Aleto	163	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.