You are viewing an outdated report.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) 14,820,541 hostnames, but only 2,391,293 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	May 2004 Count	May 2004 %	April 2004 Count	April 2004 %	Growth %
Apache	1,288,615	53.89	1,274,173	53.68	0.38
Microsoft-IIS	807,803	33.78	806,783	33.99	-0.62
Rapidsite	76,726	3.21	76,336	3.22	-0.24
null	53,254	2.23	51,092	2.15	3.46
Netscape-Enterprise	27,451	1.15	27,921	1.18	-2.41
Lotus-Domino	15,702	0.66	15,703	0.66	-0.75
Apache-AdvancedExtranetServer	9,473	0.40	9,363	0.39	0.42
A	8,618	0.36	8,517	0.36	0.43
Zeus	6,332	0.26	6,298	0.27	-0.21
WebSTAR	5,191	0.22	5,288	0.22	-2.56
WebSitePro	4,642	0.19	4,719	0.20	-2.36
IdeaWebServer	4,631	0.19	4,554	0.19	0.93
WN	4,323	0.18	4,379	0.18	-2.01
Stronghold	3,432	0.14	3,628	0.15	-6.11
Ipswitch-IMail	3,328	0.14	3,283	0.14	0.62
WebSite	2,791	0.12	2,825	0.12	-1.94
NetWare-Enterprise-Web-Server	2,742	0.11	2,807	0.12	-3.04
IBM_HTTP_SERVER	2,458	0.10	2,435	0.10	0.19
Zope	2,350	0.10	2,281	0.10	2.26
IBM_HTTP_Server	2,090	0.09	2,071	0.09	0.17
FileMakerPro	2,083	0.09	2,091	0.09	-1.12
Oracle	1,938	0.08	1,917	0.08	0.34
Netscape-FastTrack	1,829	0.08	1,888	0.08	-3.85
IBM-HTTP-Server	1,409	0.06	1,424	0.06	-1.79
FirstClass	1,325	0.06	1,320	0.06	-0.37
Resin	1,302	0.05	1,285	0.05	0.57
4D_WebSTAR_S	1,273	0.05	1,260	0.05	0.28
WebServer	1,230	0.05	1,473	0.06	-17.12
WebLogic	1,222	0.05	1,192	0.05	1.75
NCSA	1,122	0.05	1,149	0.05	-3.08
Oracle9iAS	1,083	0.05	1,039	0.04	3.46
AppleShareIP	1,069	0.04	1,097	0.05	-3.28
Jetty	1,028	0.04	978	0.04	4.33
httpd+ssl	995	0.04	991	0.04	-0.34
squid	830	0.03	759	0.03	8.54
SAMBAR	830	0.03	824	0.03	-0.02
WDaemon	814	0.03	810	0.03	-0.25
Apache-Coyote	807	0.03	699	0.03	14.59
Cougar	782	0.03	766	0.03	1.33
thttpd	747	0.03	741	0.03	0.06
CommuniGatePro	720	0.03	698	0.03	2.38
AnWeb	704	0.03	690	0.03	1.27
AOLserver	702	0.03	689	0.03	1.13
Xitami	636	0.03	651	0.03	-3.03
Boa	635	0.03	634	0.03	-0.59
WWW	615	0.03	595	0.03	2.59
Lasso	604	0.03	585	0.02	2.48
Orion	595	0.02	593	0.02	-0.41
HPWB	559	0.02	577	0.02	-3.84
Sun-ONE-Web-Server	558	0.02	490	0.02	13.03
Roxen	536	0.02	527	0.02	0.95
OSU	530	0.02	535	0.02	-1.67
Roxen·Challenger	504	0.02	509	0.02	-1.72
Oracle_Web_Listener	495	0.02	494	0.02	-0.54
IceWarp	462	0.02	449	0.02	2.13
Web	449	0.02	450	0.02	-0.96
CERN	449	0.02	457	0.02	-2.48
4D_WebStar_D	432	0.02	415	0.02	3.32
Squid	406	0.02	475	0.02	-15.16
Statistics	394	0.02	413	0.02	-5.31
Netscape-Communications	385	0.02	413	0.02	-7.47
MACOS_Personal_Websharing	334	0.01	335	0.01	-1.04
Novell-HTTP-Server	330	0.01	328	0.01	-0.14
EZproxy	306	0.01	297	0.01	2.26
Domino-Go-Webserver	301	0.01	306	0.01	-2.37
oXeo	292	0.01	273	0.01	6.16
Inktomi	291	0.01	296	0.01	-2.42
Ultraseek	279	0.01	277	0.01	-0.03
cpsrvd	278	0.01	260	0.01	6.13
WebSphere	267	0.01	256	0.01	3.52
OpenSA	256	0.01	246	0.01	3.29
DeleGate	245	0.01	248	0.01	-1.94
Apache-NeoNova	240	0.01	235	0.01	1.37
NetCache	222	0.01	212	0.01	3.94
UserLand	221	0.01	228	0.01	-3.79
Tcl-Webserver	221	0.01	206	0.01	6.48
Red	220	0.01	219	0.01	-0.29
MHttpd	210	0.01	208	0.01	0.21
Web_Server_4D	184	0.01	186	0.01	-1.81
OmniHTTPd	184	0.01	183	0.01	-0.20
JRun	183	0.01	174	0.01	4.39
WebtoB	180	0.01	169	0.01	5.72
MacHTTP	175	0.01	175	0.01	-0.74
Worldgroup	172	0.01	170	0.01	0.42
JavaWebServer	171	0.01	175	0.01	-3.01
AkamaiGHost	166	0.01	223	0.01	-26.11
Abyss	165	0.01	162	0.01	1.09
Tomcat	164	0.01	162	0.01	0.48
QuidProQuo	163	0.01	155	0.01	4.38
Caudium	163	0.01	164	0.01	-1.35
Purveyor	161	0.01	163	0.01	-1.96
Internet	161	0.01	162	0.01	-1.36
IBM	161	0.01	159	0.01	0.50
NaviServer	156	0.01	163	0.01	-5.01
HP-UX_Apache-based_Web_Server	155	0.01	158	0.01	-2.63
Netscape-Commerce	152	0.01	155	0.01	-2.67
Wapapi	145	0.01	145	0.01	-0.74
Powered	145	0.01	0	0.00	N/A
HP	143	0.01	142	0.01	-0.05
MDNServer	142	0.01	144	0.01	-2.12

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.