You are viewing an outdated report.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) 21,733,780 hostnames, but only 3,050,351 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 2007 Count	January 2007 %	December 2006 Count	December 2006 %	Growth %
Apache	1,744,676	57.20	1,732,813	57.11	0.16
Microsoft-IIS	893,956	29.31	893,427	29.44	-0.47
null	156,449	5.13	153,222	5.05	1.57
Rapidsite	65,880	2.16	66,468	2.19	-1.40
Apache-Coyote	15,098	0.49	14,706	0.48	2.13
Lotus-Domino	14,442	0.47	14,585	0.48	-1.50
Netscape-Enterprise	13,882	0.46	14,207	0.47	-2.80
A	13,319	0.44	13,157	0.43	0.70
IdeaWebServer	10,613	0.35	10,267	0.34	2.83
Apache-AdvancedExtranetServer	6,236	0.20	6,442	0.21	-3.71
NOYB	5,243	0.17	4,992	0.16	4.48
Zeus	4,833	0.16	4,787	0.16	0.43
lighttpd	4,266	0.14	4,005	0.13	5.96
Zope	4,028	0.13	3,977	0.13	0.75
Sun-ONE-Web-Server	3,783	0.12	3,751	0.12	0.32
IBM_HTTP_Server	3,726	0.12	3,696	0.12	0.28
nginx	3,508	0.12	3,222	0.11	8.31
WebServer	3,353	0.11	3,314	0.11	0.65
Resin	2,732	0.09	2,705	0.09	0.47
Ipswitch-IMail	2,549	0.08	2,631	0.09	-3.63
Oracle-Application-Server-10g	2,461	0.08	2,391	0.08	2.39
IBM_HTTP_SERVER	2,408	0.08	2,445	0.08	-2.03
WebSTAR	2,348	0.08	2,412	0.08	-3.16
squid	2,257	0.07	2,276	0.08	-1.36
WebSitePro	1,702	0.06	1,734	0.06	-2.36
Cougar	1,648	0.05	1,584	0.05	3.49
Oracle	1,582	0.05	1,607	0.05	-2.07
Jetty	1,469	0.05	1,468	0.05	-0.46
FileMakerPro	1,438	0.05	1,482	0.05	-3.48
IceWarp	1,354	0.04	1,341	0.04	0.44
WebSite	1,294	0.04	1,341	0.04	-4.01
WebLogic	1,286	0.04	1,324	0.04	-3.38
WDaemon	1,248	0.04	1,246	0.04	-0.37
GWS	1,158	0.04	1,082	0.04	6.46
4D_WebSTAR_S	1,157	0.04	1,218	0.04	-5.51
Boa	1,031	0.03	1,040	0.03	-1.39
thttpd	1,026	0.03	1,022	0.03	-0.14
AnWeb	1,002	0.03	960	0.03	3.83
III	977	0.03	970	0.03	0.19
CommuniGatePro	971	0.03	950	0.03	1.67
httpd+ssl	929	0.03	941	0.03	-1.79
BIG-IP	922	0.03	900	0.03	1.91
Stronghold	795	0.03	833	0.03	-5.06
NetWare-Enterprise-Web-Server	762	0.02	802	0.03	-5.49
AOLserver	757	0.02	771	0.03	-2.33
EZproxy	737	0.02	724	0.02	1.26
Oracle9iAS	685	0.02	709	0.02	-3.89
PowerSchool	637	0.02	631	0.02	0.42
Web	629	0.02	643	0.02	-2.69
Netscape-FastTrack	629	0.02	655	0.02	-4.47
SAMBAR	624	0.02	638	0.02	-2.71
4D_WebStar_D	579	0.02	573	0.02	0.52
AkamaiGHost	577	0.02	755	0.02	-23.98
cpsrvd	562	0.02	550	0.02	1.65
NetCache	560	0.02	575	0.02	-3.12
WebServerX	550	0.02	435	0.01	25.77
FirstClass	525	0.02	551	0.02	-5.22
DeleGate	521	0.02	520	0.02	-0.33
Orion	515	0.02	529	0.02	-3.16
WebtoB	513	0.02	499	0.02	2.27
redir-httpd	503	0.02	505	0.02	-0.92
IBM-HTTP-Server	474	0.02	511	0.02	-7.73
Roxen	465	0.02	436	0.01	6.09
NCSA	464	0.02	474	0.02	-2.62
Xitami	374	0.01	381	0.01	-2.35
Ultraseek	372	0.01	374	0.01	-1.06
Acenet	369	0.01	394	0.01	-6.84
OSU	360	0.01	366	0.01	-2.16
WebSphere	359	0.01	365	0.01	-2.16
Abyss	343	0.01	336	0.01	1.55
LiteSpeed	340	0.01	309	0.01	9.45
EdgePrism	335	0.01	292	0.01	14.12
AppleShareIP	335	0.01	358	0.01	-6.92
ListManagerWeb	318	0.01	311	0.01	1.71
""	258	0.01	255	0.01	0.65
IIS	244	0.01	242	0.01	0.30
JRun	240	0.01	248	0.01	-3.73
Servage.net	230	0.01	0	0.00	N/A
Tcl-Webserver	226	0.01	197	0.01	14.12
Nost	225	0.01	221	0.01	1.28
Indy	225	0.01	228	0.01	-1.83
httpd	223	0.01	211	0.01	5.13
HPWB	215	0.01	230	0.01	-7.01
Jeus	209	0.01	213	0.01	-2.39
UserLand	204	0.01	210	0.01	-3.37
Polaris	201	0.01	204	0.01	-1.99
WWW	195	0.01	179	0.01	8.37
eSoft	194	0.01	201	0.01	-3.99
Webserver	188	0.01	183	0.01	2.19
Power	188	0.01	184	0.01	1.64
Microsoft-HTTPAPI	188	0.01	185	0.01	1.09
NAB	182	0.01	189	0.01	-4.21
Powered	180	0.01	175	0.01	2.32
OpenSA	178	0.01	188	0.01	-5.82
Apache-NeoNova	176	0.01	173	0.01	1.20
Disallowed	175	0.01	176	0.01	-1.09
Simple,	168	0.01	177	0.01	-5.58
Oracle_Web_Listener	167	0.01	170	0.01	-2.28
Squid	166	0.01	186	0.01	-11.22
Blocked	160	0.01	170	0.01	-6.38

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.