You are viewing an outdated report. The latest version of this report was published on September 1st, 2023

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) 22,474,669 hostnames, but only 3,070,888 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	February 2007 Count	February 2007 %	January 2007 Count	January 2007 %	Growth %
Apache	1,756,978	57.21	1,744,676	57.20	0.03
Microsoft-IIS	896,751	29.20	893,956	29.31	-0.36
null	160,659	5.23	156,449	5.13	2.00
Rapidsite	65,385	2.13	65,880	2.16	-1.42
Apache-Coyote	15,669	0.51	15,098	0.49	3.09
Lotus-Domino	14,472	0.47	14,442	0.47	-0.46
Netscape-Enterprise	13,607	0.44	13,882	0.46	-2.64
A	13,389	0.44	13,319	0.44	-0.15
IdeaWebServer	11,082	0.36	10,613	0.35	3.72
Apache-AdvancedExtranetServer	6,026	0.20	6,236	0.20	-4.01
NOYB	5,203	0.17	5,243	0.17	-1.43
Zeus	4,784	0.16	4,833	0.16	-1.68
lighttpd	4,580	0.15	4,266	0.14	6.64
Zope	4,058	0.13	4,028	0.13	0.07
nginx	3,878	0.13	3,508	0.12	9.81
Sun-ONE-Web-Server	3,772	0.12	3,783	0.12	-0.96
IBM_HTTP_Server	3,759	0.12	3,726	0.12	0.21
WebServer	3,446	0.11	3,353	0.11	2.09
Resin	2,761	0.09	2,732	0.09	0.39
Oracle-Application-Server-10g	2,525	0.08	2,461	0.08	1.91
Ipswitch-IMail	2,474	0.08	2,549	0.08	-3.59
IBM_HTTP_SERVER	2,393	0.08	2,408	0.08	-1.29
squid	2,285	0.07	2,257	0.07	0.56
WebSTAR	2,225	0.07	2,348	0.08	-5.87
Cougar	1,652	0.05	1,648	0.05	-0.43
Oracle	1,603	0.05	1,582	0.05	0.65
WebSitePro	1,590	0.05	1,702	0.06	-7.21
Jetty	1,472	0.05	1,469	0.05	-0.47
FileMakerPro	1,409	0.05	1,438	0.05	-2.67
IceWarp	1,365	0.04	1,354	0.04	0.14
WebLogic	1,326	0.04	1,286	0.04	2.42
WDaemon	1,271	0.04	1,248	0.04	1.16
WebSite	1,245	0.04	1,294	0.04	-4.43
GWS	1,228	0.04	1,158	0.04	5.34
4D_WebSTAR_S	1,147	0.04	1,157	0.04	-1.53
Boa	1,026	0.03	1,031	0.03	-1.15
thttpd	1,005	0.03	1,026	0.03	-2.70
III	983	0.03	977	0.03	-0.06
AnWeb	973	0.03	1,002	0.03	-3.54
CommuniGatePro	967	0.03	971	0.03	-1.08
BIG-IP	964	0.03	922	0.03	3.86
httpd+ssl	929	0.03	929	0.03	-0.67
Stronghold	784	0.03	795	0.03	-2.04
EZproxy	752	0.02	737	0.02	1.35
AOLserver	752	0.02	757	0.02	-1.32
NetWare-Enterprise-Web-Server	733	0.02	762	0.02	-4.45
WebServerX	688	0.02	550	0.02	24.25
PowerSchool	686	0.02	637	0.02	6.97
Web	680	0.02	629	0.02	7.39
Oracle9iAS	677	0.02	685	0.02	-1.83
SAMBAR	621	0.02	624	0.02	-1.15
Netscape-FastTrack	590	0.02	629	0.02	-6.83
4D_WebStar_D	590	0.02	579	0.02	1.22
NetCache	557	0.02	560	0.02	-1.20
cpsrvd	552	0.02	562	0.02	-2.44
WebtoB	521	0.02	513	0.02	0.88
Orion	512	0.02	515	0.02	-1.25
DeleGate	508	0.02	521	0.02	-3.15
redir-httpd	507	0.02	503	0.02	0.12
AkamaiGHost	503	0.02	577	0.02	-13.41
FirstClass	496	0.02	525	0.02	-6.16
IBM-HTTP-Server	467	0.02	474	0.02	-2.14
Roxen	465	0.02	465	0.02	-0.67
NCSA	458	0.01	464	0.02	-1.95
LiteSpeed	401	0.01	340	0.01	17.15
EdgePrism	384	0.01	335	0.01	13.86
Xitami	371	0.01	374	0.01	-1.47
Ultraseek	371	0.01	372	0.01	-0.94
Acenet	371	0.01	369	0.01	-0.13
WebSphere	360	0.01	359	0.01	-0.39
OSU	357	0.01	360	0.01	-1.50
ListManagerWeb	337	0.01	318	0.01	5.27
Abyss	335	0.01	343	0.01	-2.99
AppleShareIP	330	0.01	335	0.01	-2.15
Servage.net	289	0.01	230	0.01	24.81
Nost	268	0.01	225	0.01	18.31
""	260	0.01	258	0.01	0.10
JRun	250	0.01	240	0.01	3.47
IIS	240	0.01	244	0.01	-2.30
Indy	237	0.01	225	0.01	4.63
httpd	229	0.01	223	0.01	2.00
Tcl-Webserver	227	0.01	226	0.01	-0.23
Jeus	226	0.01	209	0.01	7.41
HPWB	218	0.01	215	0.01	0.72
WWW	207	0.01	195	0.01	5.44
Polaris	205	0.01	201	0.01	1.31
Power	204	0.01	188	0.01	7.78
Microsoft-HTTPAPI	203	0.01	188	0.01	7.26
UserLand	199	0.01	204	0.01	-3.10
eSoft	188	0.01	194	0.01	-3.74
Powered	187	0.01	180	0.01	3.19
Webserver	186	0.01	188	0.01	-1.73
NAB	178	0.01	182	0.01	-2.85
Apache-NeoNova	178	0.01	176	0.01	0.46
OpenSA	173	0.01	178	0.01	-3.46
Disallowed	171	0.01	175	0.01	-2.94
Oracle_Web_Listener	163	0.01	167	0.01	-3.05
Blocked	160	0.01	160	0.01	-0.67
Squid	157	0.01	166	0.01	-6.05
Server	156	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.