You are viewing an outdated report.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) 5,498,277 hostnames, but only 1,710,692 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 2002 Count	February 2002 %	January 2002 Count	January 2002 %	Growth %
Apache	892,401	52.17	841,681	51.96	0.40
Microsoft-IIS	576,917	33.72	545,983	33.70	0.06
Rapidsite	54,357	3.18	51,376	3.17	0.19
Netscape-Enterprise	40,042	2.34	39,549	2.44	-4.13
null	25,412	1.49	23,865	1.47	0.83
Lotus-Domino	12,881	0.75	12,331	0.76	-1.08
WebSitePro	10,220	0.60	10,388	0.64	-6.84
WebSTAR	9,156	0.54	9,066	0.56	-4.37
Stronghold	7,844	0.46	7,890	0.49	-5.86
WN	6,167	0.36	6,147	0.38	-5.00
Zeus	5,359	0.31	5,115	0.32	-0.79
mod_jk	5,160	0.30	4,465	0.28	9.43
Apache-AdvancedExtranetServer	4,898	0.29	4,424	0.27	4.84
Netscape-FastTrack	3,969	0.23	4,112	0.25	-8.60
IdeaWebServer	3,424	0.20	3,394	0.21	-4.47
NCSA	3,293	0.19	3,391	0.21	-8.04
NetWare-Enterprise-Web-Server	2,648	0.15	2,444	0.15	2.60
IBM_HTTP_Server	2,082	0.12	1,913	0.12	3.06
AppleShareIP	1,855	0.11	1,772	0.11	-0.87
FileMakerPro	1,742	0.10	1,576	0.10	4.67
Roxen·Challenger	1,590	0.09	1,648	0.10	-8.64
IBM-HTTP-Server	1,287	0.08	1,141	0.07	6.81
CERN	1,243	0.07	1,241	0.08	-5.15
Ipswitch-IMail	1,173	0.07	1,039	0.06	6.91
HPWB	1,158	0.07	1,147	0.07	-4.40
WebSite	1,105	0.06	919	0.06	13.86
Oracle_Web_Listener	1,065	0.06	1,041	0.06	-3.12
Netscape-Communications	1,051	0.06	1,067	0.07	-6.73
Squid	902	0.05	846	0.05	0.96
FirstClass	869	0.05	812	0.05	1.34
Novell-HTTP-Server	787	0.05	808	0.05	-7.77
OSU	689	0.04	671	0.04	-2.77
SAMBAR	685	0.04	628	0.04	3.29
Zope	684	0.04	596	0.04	8.68
Xitami	665	0.04	623	0.04	1.08
Domino-Go-Webserver	624	0.04	631	0.04	-6.36
Red	596	0.03	610	0.04	-7.48
Roxen	568	0.03	507	0.03	6.09
WebLogic	535	0.03	470	0.03	7.79
Netscape-Commerce	527	0.03	577	0.04	-13.51
Oracle	502	0.03	381	0.02	24.77
Lasso	462	0.03	450	0.03	-2.78
Affinity-Apache	460	0.03	444	0.03	-1.89
MACOS_Personal_Websharing	444	0.03	417	0.03	0.82
AOLserver	398	0.02	352	0.02	7.07
thttpd	393	0.02	358	0.02	3.95
mod_perl	390	0.02	504	0.03	-26.73
WWW	385	0.02	379	0.02	-3.81
OmniHTTPd	362	0.02	314	0.02	9.17
QuidProQuo	359	0.02	334	0.02	1.78
JavaWebServer	338	0.02	327	0.02	-2.12
Web	334	0.02	315	0.02	0.41
NaviServer	325	0.02	338	0.02	-8.95
Statistics	307	0.02	285	0.02	2.00
MacHTTP	302	0.02	300	0.02	-4.68
Orion	300	0.02	261	0.02	8.84
Resin	292	0.02	241	0.01	14.73
CommuniGatePro	288	0.02	255	0.02	6.95
AnWeb	281	0.02	257	0.02	3.54
Purveyor	275	0.02	265	0.02	-1.73
Commerce-Builder	261	0.02	269	0.02	-8.12
Ultraseek	251	0.01	255	0.02	-6.79
Microsoft-PWS	234	0.01	225	0.01	-1.52
Worldgroup	233	0.01	226	0.01	-2.37
Microsoft-PWS-95	232	0.01	238	0.01	-7.69
Cougar	227	0.01	203	0.01	5.89
Inktomi	218	0.01	193	0.01	6.96
Sun_WebServer	198	0.01	196	0.01	-4.34
Apache-1.3.4	195	0.01	189	0.01	-2.30
NetCache	191	0.01	164	0.01	10.28
Powered	188	0.01	181	0.01	-1.64
HouseIt-Apache	185	0.01	182	0.01	-3.75
UserLand	184	0.01	164	0.01	6.24
Microsoft-Internet-Information-Server	174	0.01	180	0.01	-8.46
IBM_HTTP_SERVER	174	0.01	126	0.01	30.77
WDaemon	169	0.01	139	0.01	15.13
Web_Server_4D	167	0.01	170	0.01	-6.98
Q100	163	0.01	151	0.01	2.22
Boa	161	0.01	139	0.01	9.68
Oracle_Web_listener3.0.2.0.0	158	0.01	157	0.01	-4.70
Caudium	146	0.01	125	0.01	10.60
ALEPH	144	0.01	109	0.01	25.10
SilverStream	142	0.01	141	0.01	-4.63
PowerWeb	138	0.01	141	0.01	-7.32
IBM-ICS	128	0.01	143	0.01	-15.24
IBM	128	0.01	133	0.01	-8.87
FrontPage-PWS32	127	0.01	115	0.01	4.57
eShare-Expressions	126	0.01	117	0.01	1.98
David-WebBox	126	0.01	123	0.01	-3.00
OpenSA	125	0.01	116	0.01	2.04
4D_WebStar_D	121	0.01	0	0.00	N/A
MHttpd	118	0.01	115	0.01	-2.84
ConcentricHost-Ashurbanipal	118	0.01	116	0.01	-3.67
Internet	112	0.01	101	0.01	5.01
Apache-SSL-US	111	0.01	109	0.01	-3.57
Unknown	109	0.01	104	0.01	-0.75
Open-Market-Secure-WebServer	109	0.01	109	0.01	-5.31
NetPresenz	106	0.01	105	0.01	-4.40
MDNServer	106	0.01	97	0.01	3.48
Oracle_WebDb_Listener	104	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.