You are viewing an outdated report. The latest version of this report was published on November 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) 10,698,608 hostnames, but only 2,196,536 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	June 2003 Count	June 2003 %	May 2003 Count	May 2003 %	Growth %
Apache	1,155,568	52.61	1,154,068	52.47	0.27
Microsoft-IIS	766,273	34.89	767,845	34.91	-0.06
Rapidsite	73,415	3.34	73,781	3.35	-0.36
null	35,851	1.63	35,228	1.60	1.91
Netscape-Enterprise	32,607	1.48	33,503	1.52	-2.54
Lotus-Domino	15,417	0.70	15,463	0.70	-0.16
Apache-AdvancedExtranetServer	8,113	0.37	8,214	0.37	-1.09
A	7,024	0.32	6,953	0.32	1.16
WebSTAR	6,829	0.31	7,182	0.33	-4.78
WebSitePro	6,479	0.29	6,814	0.31	-4.78
Zeus	6,108	0.28	6,131	0.28	-0.23
WN	5,092	0.23	5,247	0.24	-2.82
Stronghold	4,814	0.22	4,931	0.22	-2.24
IdeaWebServer	3,997	0.18	4,003	0.18	-0.01
NetWare-Enterprise-Web-Server	3,228	0.15	3,331	0.15	-2.96
Ipswitch-IMail	2,764	0.13	2,735	0.12	1.20
WebSite	2,703	0.12	2,679	0.12	1.04
Netscape-FastTrack	2,613	0.12	2,778	0.13	-5.81
IBM_HTTP_Server	2,196	0.10	2,228	0.10	-1.30
FileMakerPro	2,088	0.10	2,177	0.10	-3.95
Oracle	1,690	0.08	1,679	0.08	0.80
IBM_HTTP_SERVER	1,689	0.08	1,597	0.07	5.91
NCSA	1,632	0.07	1,734	0.08	-5.75
Zope	1,615	0.07	1,543	0.07	4.81
IBM-HTTP-Server	1,525	0.07	1,547	0.07	-1.28
AppleShareIP	1,441	0.07	1,495	0.07	-3.48
FirstClass	1,238	0.06	1,231	0.06	0.71
WebLogic	941	0.04	928	0.04	1.54
Resin	921	0.04	906	0.04	1.80
Squid	890	0.04	1,592	0.07	-44.02
4D_WebSTAR_S	842	0.04	782	0.04	7.82
WebServer	840	0.04	758	0.03	10.97
SAMBAR	840	0.04	837	0.04	0.50
HPWB	817	0.04	865	0.04	-5.42
Roxen·Challenger	733	0.03	873	0.04	-15.92
Oracle_Web_Listener	719	0.03	754	0.03	-4.51
Xitami	701	0.03	737	0.03	-4.75
CERN	667	0.03	721	0.03	-7.36
AOLserver	634	0.03	642	0.03	-1.11
Oracle9iAS	604	0.03	577	0.03	4.83
thttpd	603	0.03	611	0.03	-1.17
WDaemon	602	0.03	591	0.03	2.00
Lasso	589	0.03	603	0.03	-2.18
Netscape-Communications	577	0.03	592	0.03	-2.40
Cougar	577	0.03	570	0.03	1.37
OSU	575	0.03	589	0.03	-2.24
CommuniGatePro	572	0.03	569	0.03	0.67
Roxen	564	0.03	564	0.03	0.14
Jetty	546	0.02	522	0.02	4.74
AnWeb	530	0.02	516	0.02	2.86
Orion	525	0.02	508	0.02	3.49
httpd+ssl	517	0.02	476	0.02	8.77
WWW	492	0.02	485	0.02	1.59
Novell-HTTP-Server	482	0.02	510	0.02	-5.36
Statistics	449	0.02	470	0.02	-4.33
Boa	447	0.02	468	0.02	-4.35
MACOS_Personal_Websharing	443	0.02	466	0.02	-4.80
Domino-Go-Webserver	434	0.02	452	0.02	-3.85
Web	400	0.02	416	0.02	-3.71
Patchy	387	0.02	392	0.02	-1.14
OmniHTTPd	372	0.02	392	0.02	-4.97
Inktomi	357	0.02	367	0.02	-2.59
4D_WebStar_D	342	0.02	345	0.02	-0.73
squid	296	0.01	236	0.01	25.60
IceWarp	266	0.01	241	0.01	10.53
OpenSA	262	0.01	269	0.01	-2.47
Red	259	0.01	271	0.01	-4.29
Apache-NeoNova	257	0.01	279	0.01	-7.76
QuidProQuo	253	0.01	265	0.01	-4.39
JavaWebServer	231	0.01	238	0.01	-2.80
UserLand	226	0.01	231	0.01	-2.03
Netscape-Commerce	223	0.01	235	0.01	-4.97
MacHTTP	214	0.01	221	0.01	-3.03
Purveyor	201	0.01	218	0.01	-7.67
Web_Server_4D	199	0.01	206	0.01	-3.26
mod_perl	197	0.01	211	0.01	-6.50
Netrox-Apache	197	0.01	197	0.01	0.14
NaviServer	194	0.01	197	0.01	-1.38
Caudium	189	0.01	212	0.01	-10.72
MHttpd	188	0.01	190	0.01	-0.91
Ultraseek	185	0.01	175	0.01	5.86
oXeo	181	0.01	166	0.01	9.19
Worldgroup	178	0.01	172	0.01	3.63
HP	170	0.01	158	0.01	7.75
JRun	167	0.01	160	0.01	4.52
IBM	167	0.01	172	0.01	-2.77
Internet	163	0.01	166	0.01	-1.67
MDNServer	162	0.01	160	0.01	1.39
NetCache	159	0.01	153	0.01	4.07
EZproxy	159	0.01	143	0.01	11.35
Tomcat	158	0.01	155	0.01	2.08
Unknown	146	0.01	148	0.01	-1.21
Wapapi	138	0.01	131	0.01	5.49
DeleGate	138	0.01	138	0.01	0.14
CQhost	138	0.01	132	0.01	4.69
HP-UX_Apache-based_Web_Server	136	0.01	127	0.01	7.24
Commerce-Builder	132	0.01	137	0.01	-3.51
HTTP	131	0.01	129	0.01	1.69
Sun_WebServer	126	0.01	129	0.01	-2.19
ALEPH	125	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.