You are viewing an outdated report.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) 5,940,265 hostnames, but only 1,764,533 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	March 2002 Count	March 2002 %	February 2002 Count	February 2002 %	Growth %
Apache	921,484	52.22	892,401	52.17	0.11
Microsoft-IIS	611,065	34.63	576,917	33.72	2.69
Rapidsite	55,969	3.17	54,357	3.18	-0.18
Netscape-Enterprise	39,834	2.26	40,042	2.34	-3.55
Lotus-Domino	13,302	0.75	12,881	0.75	0.12
null	11,216	0.64	25,412	1.49	-57.21
WebSitePro	10,267	0.58	10,220	0.60	-2.61
WebSTAR	9,159	0.52	9,156	0.54	-3.02
Stronghold	7,758	0.44	7,844	0.46	-4.11
mod_jk	6,363	0.36	5,160	0.30	19.55
WN	6,271	0.36	6,167	0.36	-1.42
Zeus	5,564	0.32	5,359	0.31	0.66
Apache-AdvancedExtranetServer	5,290	0.30	4,898	0.29	4.71
Netscape-FastTrack	3,932	0.22	3,969	0.23	-3.96
IdeaWebServer	3,415	0.19	3,424	0.20	-3.31
NCSA	3,165	0.18	3,293	0.19	-6.82
NetWare-Enterprise-Web-Server	2,759	0.16	2,648	0.15	1.01
IBM_HTTP_Server	2,166	0.12	2,082	0.12	0.86
AppleShareIP	1,878	0.11	1,855	0.11	-1.85
FileMakerPro	1,824	0.10	1,742	0.10	1.51
Roxen·Challenger	1,575	0.09	1,590	0.09	-3.97
Ipswitch-IMail	1,344	0.08	1,173	0.07	11.08
IBM-HTTP-Server	1,304	0.07	1,287	0.08	-1.77
CERN	1,206	0.07	1,243	0.07	-5.94
HPWB	1,151	0.07	1,158	0.07	-3.64
WebSite	1,089	0.06	1,105	0.06	-4.46
Oracle_Web_Listener	1,051	0.06	1,065	0.06	-4.33
Netscape-Communications	1,026	0.06	1,051	0.06	-5.36
Squid	917	0.05	902	0.05	-1.44
FirstClass	899	0.05	869	0.05	0.30
Novell-HTTP-Server	806	0.05	787	0.05	-0.71
Zope	730	0.04	684	0.04	3.47
SAMBAR	708	0.04	685	0.04	0.20
OSU	680	0.04	689	0.04	-4.32
Xitami	668	0.04	665	0.04	-2.61
Domino-Go-Webserver	639	0.04	624	0.04	-0.72
Oracle	593	0.03	502	0.03	14.52
Roxen	585	0.03	568	0.03	-0.15
Red	582	0.03	596	0.03	-5.33
WebLogic	554	0.03	535	0.03	0.39
Netscape-Commerce	480	0.03	527	0.03	-11.70
Lasso	471	0.03	462	0.03	-1.16
Affinity-Apache	464	0.03	460	0.03	-2.21
MACOS_Personal_Websharing	455	0.03	444	0.03	-0.65
AOLserver	407	0.02	398	0.02	-0.86
thttpd	402	0.02	393	0.02	-0.83
WWW	391	0.02	385	0.02	-1.54
mod_perl	367	0.02	390	0.02	-8.77
OmniHTTPd	365	0.02	362	0.02	-2.25
Statistics	360	0.02	307	0.02	13.69
JavaWebServer	343	0.02	338	0.02	-1.62
QuidProQuo	341	0.02	359	0.02	-7.91
Web	335	0.02	334	0.02	-2.76
Resin	314	0.02	292	0.02	4.25
NaviServer	311	0.02	325	0.02	-7.23
Orion	309	0.02	300	0.02	-0.14
CommuniGatePro	300	0.02	288	0.02	0.99
MacHTTP	297	0.02	302	0.02	-4.66
AnWeb	294	0.02	281	0.02	1.43
Cougar	264	0.01	227	0.01	12.75
Purveyor	262	0.01	275	0.02	-7.63
Commerce-Builder	257	0.01	261	0.02	-4.54
Ultraseek	242	0.01	251	0.01	-6.53
Inktomi	240	0.01	218	0.01	6.73
Worldgroup	238	0.01	233	0.01	-0.97
IBM_HTTP_SERVER	229	0.01	174	0.01	27.59
Microsoft-PWS-95	221	0.01	232	0.01	-7.65
Microsoft-PWS	217	0.01	234	0.01	-10.09
Web_Server_4D	200	0.01	167	0.01	16.11
Sun_WebServer	199	0.01	198	0.01	-2.56
Apache-1.3.4	199	0.01	195	0.01	-1.06
WDaemon	193	0.01	169	0.01	10.72
HouseIt-Apache	189	0.01	185	0.01	-0.96
Boa	189	0.01	161	0.01	13.81
NetCache	188	0.01	191	0.01	-4.57
Powered	185	0.01	188	0.01	-4.60
UserLand	183	0.01	184	0.01	-3.58
SilverStream	179	0.01	142	0.01	22.21
Q100	163	0.01	163	0.01	-3.05
Microsoft-Internet-Information-Server	163	0.01	174	0.01	-9.18
Caudium	158	0.01	146	0.01	4.92
Oracle_Web_listener3.0.2.0.0	154	0.01	158	0.01	-5.51
PowerWeb	149	0.01	138	0.01	4.68
MediaGalaxy	142	0.01	0	0.00	N/A
OpenSA	140	0.01	125	0.01	8.58
ALEPH	137	0.01	144	0.01	-7.76
IBM	136	0.01	128	0.01	3.01
4D_WebStar_D	129	0.01	121	0.01	3.36
MHttpd	128	0.01	118	0.01	5.16
IBM-ICS	128	0.01	128	0.01	-3.05
MDNServer	125	0.01	106	0.01	14.33
Unknown	118	0.01	109	0.01	4.95
Internet	117	0.01	112	0.01	1.28
eShare-Expressions	115	0.01	126	0.01	-11.52
David-WebBox	115	0.01	126	0.01	-11.52
FrontPage-PWS32	114	0.01	127	0.01	-12.98
ConcentricHost-Ashurbanipal	113	0.01	118	0.01	-7.16
Apache-SSL-US	110	0.01	111	0.01	-3.92
NetPresenz	107	0.01	106	0.01	-2.14
Oracle_WebDb_Listener	106	0.01	104	0.01	-1.19

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.