You are viewing an outdated report.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) 9,032,963 hostnames, but only 2,078,823 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 2003 Count	February 2003 %	January 2003 Count	January 2003 %	Growth %
Apache	1,090,920	52.48	1,050,778	51.67	1.55
Microsoft-IIS	723,238	34.79	717,461	35.28	-1.40
Rapidsite	67,086	3.23	64,636	3.18	1.52
Netscape-Enterprise	34,878	1.68	35,282	1.74	-3.30
null	31,759	1.53	30,682	1.51	1.25
Lotus-Domino	14,906	0.72	14,647	0.72	-0.45
WebSTAR	7,594	0.37	7,656	0.38	-2.98
Apache-AdvancedExtranetServer	7,543	0.36	7,250	0.36	1.77
WebSitePro	7,496	0.36	7,611	0.37	-3.66
A	6,105	0.29	5,743	0.28	3.98
Zeus	5,970	0.29	5,866	0.29	-0.45
WN	5,367	0.26	5,381	0.26	-2.44
Stronghold	5,295	0.25	5,542	0.27	-6.54
IdeaWebServer	3,863	0.19	3,793	0.19	-0.38
NetWare-Enterprise-Web-Server	3,227	0.16	3,161	0.16	-0.14
Netscape-FastTrack	2,925	0.14	2,999	0.15	-4.60
WebSite	2,640	0.13	2,600	0.13	-0.68
Ipswitch-IMail	2,364	0.11	2,199	0.11	5.16
IBM_HTTP_Server	2,247	0.11	2,218	0.11	-0.90
FileMakerPro	2,067	0.10	1,979	0.10	2.17
NCSA	1,955	0.09	2,096	0.10	-8.76
Squid	1,823	0.09	1,676	0.08	6.40
AppleShareIP	1,576	0.08	1,557	0.08	-0.99
IBM-HTTP-Server	1,533	0.07	1,504	0.07	-0.30
Oracle	1,481	0.07	1,369	0.07	5.82
Zope	1,310	0.06	1,235	0.06	3.76
IBM_HTTP_SERVER	1,288	0.06	1,177	0.06	7.04
FirstClass	1,157	0.06	1,089	0.05	3.93
Roxen·Challenger	1,139	0.05	1,143	0.06	-2.53
HPWB	976	0.05	981	0.05	-2.68
WebLogic	817	0.04	772	0.04	3.52
CERN	804	0.04	848	0.04	-7.26
Oracle_Web_Listener	802	0.04	813	0.04	-3.51
SAMBAR	781	0.04	740	0.04	3.24
Xitami	738	0.04	732	0.04	-1.38
Resin	727	0.03	670	0.03	6.14
Netscape-Communications	633	0.03	676	0.03	-8.40
WebServer	619	0.03	557	0.03	8.71
4D_WebSTAR_S	613	0.03	562	0.03	6.69
OSU	594	0.03	601	0.03	-3.32
AOLserver	590	0.03	555	0.03	3.99
Lasso	573	0.03	553	0.03	1.35
Novell-HTTP-Server	547	0.03	537	0.03	-0.36
thttpd	544	0.03	527	0.03	0.97
Roxen	544	0.03	589	0.03	-9.66
CommuniGatePro	498	0.02	463	0.02	5.21
Domino-Go-Webserver	495	0.02	499	0.02	-2.97
Cougar	487	0.02	454	0.02	4.93
WDaemon	471	0.02	415	0.02	11.02
Orion	469	0.02	452	0.02	1.50
Statistics	465	0.02	453	0.02	0.41
Web	441	0.02	408	0.02	5.73
MACOS_Personal_Websharing	441	0.02	448	0.02	-3.71
WWW	440	0.02	438	0.02	-1.74
Oracle9iAS	436	0.02	354	0.02	20.48
AnWeb	417	0.02	404	0.02	0.96
httpd+ssl	405	0.02	388	0.02	2.10
Patchy	392	0.02	387	0.02	-0.92
Inktomi	381	0.02	366	0.02	1.83
Boa	379	0.02	332	0.02	11.66
OmniHTTPd	357	0.02	347	0.02	0.64
Jetty	327	0.02	283	0.01	13.03
4D_WebStar_D	293	0.01	266	0.01	7.75
Red	287	0.01	289	0.01	-2.86
QuidProQuo	269	0.01	287	0.01	-8.32
Apache-NeoNova	269	0.01	267	0.01	-1.45
Netscape-Commerce	266	0.01	270	0.01	-3.63
OpenSA	248	0.01	228	0.01	6.40
JavaWebServer	247	0.01	255	0.01	-5.25
MacHTTP	239	0.01	242	0.01	-3.40
mod_perl	233	0.01	238	0.01	-4.24
UserLand	225	0.01	207	0.01	6.32
Purveyor	223	0.01	219	0.01	-0.40
squid	221	0.01	185	0.01	16.85
Caudium	215	0.01	209	0.01	0.63
NaviServer	207	0.01	212	0.01	-4.49
Web_Server_4D	202	0.01	206	0.01	-4.08
Netrox-Apache	199	0.01	193	0.01	0.86
Worldgroup	181	0.01	189	0.01	-6.32
MHttpd	175	0.01	163	0.01	5.02
IBM	165	0.01	167	0.01	-3.35
Internet	163	0.01	160	0.01	-0.35
Ultraseek	162	0.01	163	0.01	-2.78
IceWarp	157	0.01	133	0.01	15.47
Commerce-Builder	155	0.01	170	0.01	-10.81
MDNServer	152	0.01	146	0.01	1.84
Unknown	149	0.01	142	0.01	2.64
NetCache	143	0.01	139	0.01	0.63
Sun_WebServer	139	0.01	132	0.01	3.00
Powered	139	0.01	143	0.01	-4.92
JRun	135	0.01	126	0.01	4.80
HP	132	0.01	123	0.01	4.97
Microsoft-PWS-95	130	0.01	118	0.01	7.76
SilverStream	129	0.01	125	0.01	0.95
Microsoft-PWS	126	0.01	131	0.01	-5.92
ALEPH	125	0.01	133	0.01	-8.07
Tomcat	123	0.01	109	0.01	10.38
oXeo	122	0.01	0	0.00	N/A
Fujitsu-InfoProvider-Pro	115	0.01	110	0.01	2.26
Oracle_Web_listener3.0.2.0.0	113	0.01	111	0.01	-0.42

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.