You are viewing an outdated report. The latest version of this report was published on September 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) 13,686,927 hostnames, but only 2,341,463 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 2004 Count	January 2004 %	December 2003 Count	December 2003 %	Growth %
Apache	1,247,863	53.29	1,241,512	53.26	0.07
Microsoft-IIS	805,400	34.40	802,788	34.44	-0.11
Rapidsite	76,925	3.29	76,901	3.30	-0.41
null	44,774	1.91	43,303	1.86	2.95
Netscape-Enterprise	29,879	1.28	30,335	1.30	-1.93
Lotus-Domino	15,787	0.67	15,860	0.68	-0.89
Apache-AdvancedExtranetServer	8,929	0.38	8,743	0.38	1.68
A	8,208	0.35	8,068	0.35	1.29
Zeus	6,412	0.27	6,440	0.28	-0.87
WebSTAR	5,804	0.25	5,967	0.26	-3.16
WebSitePro	5,325	0.23	5,503	0.24	-3.66
WN	4,630	0.20	4,669	0.20	-1.27
IdeaWebServer	4,299	0.18	4,284	0.18	-0.09
Stronghold	4,104	0.18	4,232	0.18	-3.45
Ipswitch-IMail	3,194	0.14	3,178	0.14	0.06
NetWare-Enterprise-Web-Server	2,972	0.13	3,039	0.13	-2.63
WebSite	2,898	0.12	2,905	0.12	-0.68
IBM_HTTP_SERVER	2,244	0.10	2,150	0.09	3.92
IBM_HTTP_Server	2,125	0.09	2,145	0.09	-1.37
Zope	2,104	0.09	2,043	0.09	2.54
FileMakerPro	2,093	0.09	2,134	0.09	-2.35
Netscape-FastTrack	2,089	0.09	2,160	0.09	-3.71
Oracle	1,952	0.08	1,953	0.08	-0.49
IBM-HTTP-Server	1,480	0.06	1,484	0.06	-0.71
FirstClass	1,310	0.06	1,301	0.06	0.25
NCSA	1,306	0.06	1,364	0.06	-4.67
WebServer	1,253	0.05	1,207	0.05	3.36
Resin	1,204	0.05	1,147	0.05	4.51
4D_WebSTAR_S	1,185	0.05	1,099	0.05	7.35
AppleShareIP	1,176	0.05	1,218	0.05	-3.87
WebLogic	1,109	0.05	1,102	0.05	0.20
Oracle9iAS	955	0.04	907	0.04	4.83
Jetty	898	0.04	848	0.04	5.43
httpd+ssl	869	0.04	804	0.03	7.61
SAMBAR	864	0.04	865	0.04	-0.55
WDaemon	741	0.03	720	0.03	2.47
Cougar	735	0.03	716	0.03	2.21
CommuniGatePro	684	0.03	662	0.03	2.87
AOLserver	683	0.03	660	0.03	3.03
thttpd	672	0.03	692	0.03	-3.31
Xitami	670	0.03	678	0.03	-1.61
AnWeb	668	0.03	646	0.03	2.95
HPWB	637	0.03	652	0.03	-2.73
squid	629	0.03	515	0.02	21.60
Orion	592	0.03	589	0.03	0.07
Lasso	588	0.03	592	0.03	-1.11
Boa	580	0.02	550	0.02	4.99
WWW	556	0.02	551	0.02	0.47
Oracle_Web_Listener	555	0.02	587	0.03	-5.86
Roxen	552	0.02	565	0.02	-2.73
Roxen·Challenger	551	0.02	580	0.02	-5.41
CERN	543	0.02	556	0.02	-2.76
OSU	534	0.02	551	0.02	-3.51
Netscape-Communications	456	0.02	469	0.02	-3.20
Squid	440	0.02	444	0.02	-1.33
Web	438	0.02	431	0.02	1.18
Statistics	437	0.02	439	0.02	-0.89
IceWarp	408	0.02	396	0.02	2.58
MACOS_Personal_Websharing	394	0.02	387	0.02	1.36
4D_WebStar_D	386	0.02	394	0.02	-2.46
Novell-HTTP-Server	376	0.02	394	0.02	-4.99
Domino-Go-Webserver	360	0.02	366	0.02	-2.07
Inktomi	324	0.01	337	0.01	-4.28
EZproxy	270	0.01	262	0.01	2.60
cpaneld	259	0.01	233	0.01	10.67
OpenSA	257	0.01	262	0.01	-2.34
Red	245	0.01	250	0.01	-2.43
OmniHTTPd	241	0.01	339	0.01	-29.22
DeleGate	237	0.01	236	0.01	-0.01
Ultraseek	236	0.01	226	0.01	3.97
UserLand	234	0.01	231	0.01	0.86
AkamaiGHost	234	0.01	299	0.01	-22.08
Apache-NeoNova	232	0.01	233	0.01	-0.86
Apache-Coyote	223	0.01	0	0.00	N/A
oXeo	222	0.01	204	0.01	8.35
QuidProQuo	214	0.01	210	0.01	1.46
MHttpd	202	0.01	197	0.01	2.09
Sun-ONE-Web-Server	198	0.01	0	0.00	N/A
WebSphere	196	0.01	175	0.01	11.51
MacHTTP	196	0.01	216	0.01	-9.66
Web_Server_4D	190	0.01	198	0.01	-4.46
JavaWebServer	180	0.01	193	0.01	-7.14
Netscape-Commerce	176	0.01	183	0.01	-4.25
Tcl-Webserver	174	0.01	168	0.01	3.12
Purveyor	170	0.01	188	0.01	-9.97
NetCache	165	0.01	158	0.01	3.97
IBM	165	0.01	171	0.01	-3.93
NaviServer	164	0.01	166	0.01	-1.64
HP-UX_Apache-based_Web_Server	163	0.01	153	0.01	6.07
Caudium	162	0.01	165	0.01	-2.25
Worldgroup	160	0.01	165	0.01	-3.45
JRun	159	0.01	157	0.01	0.83
Tomcat	158	0.01	159	0.01	-1.06
Internet	158	0.01	160	0.01	-1.68
WebtoB	156	0.01	143	0.01	8.61
mod_perl	152	0.01	154	0.01	-1.73
Wapapi	151	0.01	146	0.01	2.97
MDNServer	150	0.01	154	0.01	-3.02
HP	147	0.01	144	0.01	1.64
LiveStats	134	0.01	135	0.01	-1.17

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.