You are viewing an outdated report. The latest version of this report was published on April 1st, 2025

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) 8,420,350 hostnames, but only 1,952,002 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	July 2002 Count	July 2002 %	June 2002 Count	June 2002 %	Growth %
Apache	997,139	51.08	979,900	51.13	-0.09
Microsoft-IIS	692,506	35.48	676,517	35.30	0.51
Rapidsite	62,681	3.21	61,406	3.20	0.23
Netscape-Enterprise	39,119	2.00	39,436	2.06	-2.60
null	28,899	1.48	28,251	1.47	0.44
Lotus-Domino	14,508	0.74	14,177	0.74	0.48
WebSitePro	8,931	0.46	9,118	0.48	-3.83
WebSTAR	8,801	0.45	8,834	0.46	-2.18
Apache-AdvancedExtranetServer	6,828	0.35	6,654	0.35	0.75
Stronghold	6,810	0.35	7,354	0.38	-9.08
FrontPage	6,781	0.35	0	0.00	N/A
WN	6,369	0.33	6,467	0.34	-3.30
Zeus	6,153	0.32	6,008	0.31	0.56
Netscape-FastTrack	3,633	0.19	3,766	0.20	-5.28
IdeaWebServer	3,358	0.17	3,361	0.18	-1.90
NetWare-Enterprise-Web-Server	3,149	0.16	3,126	0.16	-1.09
NCSA	2,712	0.14	2,815	0.15	-5.41
IBM_HTTP_Server	2,427	0.12	2,392	0.12	-0.38
WebSite	2,290	0.12	2,134	0.11	5.36
FileMakerPro	1,975	0.10	1,982	0.10	-2.16
Ipswitch-IMail	1,903	0.10	1,773	0.09	5.39
Squid	1,834	0.09	2,078	0.11	-13.34
AppleShareIP	1,779	0.09	1,857	0.10	-5.94
IBM-HTTP-Server	1,477	0.08	1,442	0.08	0.57
Roxen·Challenger	1,367	0.07	1,376	0.07	-2.46
HPWB	1,111	0.06	1,130	0.06	-3.46
FirstClass	1,049	0.05	1,004	0.05	2.59
CERN	1,049	0.05	1,075	0.06	-4.19
Oracle	1,041	0.05	898	0.05	13.82
Oracle_Web_Listener	1,024	0.05	1,043	0.05	-3.60
Zope	967	0.05	899	0.05	5.61
Netscape-Communications	879	0.05	900	0.05	-4.10
SAMBAR	767	0.04	757	0.04	-0.52
Novell-HTTP-Server	736	0.04	778	0.04	-7.11
WebLogic	706	0.04	687	0.04	0.90
Xitami	684	0.04	709	0.04	-5.28
OSU	672	0.03	667	0.03	-1.08
Roxen	607	0.03	617	0.03	-3.40
IBM_HTTP_SERVER	596	0.03	452	0.02	29.47
Domino-Go-Webserver	578	0.03	611	0.03	-7.12
thttpd	527	0.03	483	0.03	7.13
Lasso	510	0.03	494	0.03	1.37
AOLserver	500	0.03	484	0.03	1.43
Statistics	473	0.02	460	0.02	0.96
Resin	471	0.02	445	0.02	3.92
MACOS_Personal_Websharing	461	0.02	460	0.02	-1.60
Orion	406	0.02	386	0.02	3.27
WWW	405	0.02	405	0.02	-1.81
Red	402	0.02	458	0.02	-13.82
Cougar	399	0.02	364	0.02	7.63
Netscape-Commerce	393	0.02	405	0.02	-4.72
CommuniGatePro	393	0.02	379	0.02	1.81
OmniHTTPd	371	0.02	361	0.02	0.91
Web	370	0.02	378	0.02	-3.89
AnWeb	354	0.02	334	0.02	4.07
WDaemon	342	0.02	313	0.02	7.28
JavaWebServer	336	0.02	328	0.02	0.58
QuidProQuo	325	0.02	331	0.02	-3.59
Inktomi	319	0.02	302	0.02	3.71
mod_perl	315	0.02	343	0.02	-9.83
MacHTTP	291	0.01	310	0.02	-7.83
NaviServer	286	0.01	285	0.01	-1.47
Boa	285	0.01	262	0.01	6.81
4D_WebSTAR_S	278	0.01	236	0.01	15.66
Purveyor	252	0.01	259	0.01	-4.47
Commerce-Builder	221	0.01	226	0.01	-3.99
Apache-1.3.4	219	0.01	206	0.01	4.38
Web_Server_4D	217	0.01	221	0.01	-3.59
Worldgroup	215	0.01	233	0.01	-9.40
Ultraseek	215	0.01	216	0.01	-2.27
Netrox-Apache	205	0.01	204	0.01	-1.33
UserLand	201	0.01	196	0.01	0.69
Microsoft-PWS-95	186	0.01	190	0.01	-3.88
httpd+ssl	181	0.01	161	0.01	10.38
Microsoft-PWS	180	0.01	192	0.01	-7.95
4D_WebStar_D	180	0.01	153	0.01	15.51
Powered	179	0.01	176	0.01	-0.14
Sun_WebServer	178	0.01	188	0.01	-7.04
MediaGalaxy	177	0.01	151	0.01	15.09
Caudium	169	0.01	170	0.01	-2.39
IBM	162	0.01	155	0.01	2.62
Oracle9iAS	156	0.01	134	0.01	14.31
PowerWeb	150	0.01	144	0.01	2.28
MHttpd	150	0.01	144	0.01	2.28
MDNServer	150	0.01	140	0.01	5.20
ALEPH	148	0.01	145	0.01	0.22
SilverStream	146	0.01	149	0.01	-3.79
NetCache	144	0.01	120	0.01	17.82
OpenSA	142	0.01	140	0.01	-0.41
Internet	139	0.01	133	0.01	2.62
Microsoft-Internet-Information-Server	134	0.01	149	0.01	-11.70
Oracle_Web_listener3.0.2.0.0	132	0.01	138	0.01	-6.08
Unknown	126	0.01	125	0.01	-1.03
HTTP	123	0.01	134	0.01	-9.87
David-WebBox	119	0.01	120	0.01	-2.63
ConcentricHost-Ashurbanipal	118	0.01	114	0.01	1.63
Oracle_WebDb_Listener	111	0.01	116	0.01	-6.05
Jetty	110	0.01	0	0.00	N/A
CommerceServer400	109	0.01	0	0.00	N/A
IBM-ICS	104	0.01	120	0.01	-14.91

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.