You are viewing an outdated report.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) 28,116,670 hostnames, but only 3,417,579 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 2008 Count	March 2008 %	February 2008 Count	February 2008 %	Growth %
Apache	1,982,256	58.00	1,965,291	57.97	0.05
Microsoft-IIS	934,973	27.36	931,429	27.47	-0.43
null	211,695	6.19	207,842	6.13	1.04
Rapidsite	67,406	1.97	67,691	2.00	-1.22
Apache-Coyote	22,806	0.67	22,182	0.65	1.99
IdeaWebServer	16,917	0.49	16,559	0.49	1.34
A	16,038	0.47	15,864	0.47	0.28
Lotus-Domino	13,757	0.40	13,799	0.41	-1.11
Netscape-Enterprise	10,735	0.31	10,915	0.32	-2.44
nginx	10,667	0.31	9,700	0.29	9.09
lighttpd	9,379	0.27	8,882	0.26	4.75
IBM_HTTP_Server	4,798	0.14	4,817	0.14	-1.19
Zope	4,480	0.13	4,425	0.13	0.43
Zeus	4,379	0.13	4,387	0.13	-0.98
Apache-AdvancedExtranetServer	4,193	0.12	4,289	0.13	-3.02
WebServer	4,102	0.12	4,096	0.12	-0.66
Sun-ONE-Web-Server	3,980	0.12	3,977	0.12	-0.73
squid	3,455	0.10	3,287	0.10	4.27
NOYB	3,290	0.10	3,356	0.10	-2.75
Oracle-Application-Server-10g	3,287	0.10	3,231	0.10	0.92
Resin	3,217	0.09	3,193	0.09	-0.06
Cougar	2,012	0.06	1,964	0.06	1.62
IBM_HTTP_SERVER	1,963	0.06	1,990	0.06	-2.15
Ipswitch-IMail	1,723	0.05	1,739	0.05	-1.72
WebServerX	1,651	0.05	1,727	0.05	-5.17
GWS	1,633	0.05	1,598	0.05	1.37
IceWarp	1,558	0.05	1,581	0.05	-2.25
Jetty	1,556	0.05	1,556	0.05	-0.80
WDaemon	1,485	0.04	1,486	0.04	-0.87
WebSTAR	1,476	0.04	1,494	0.04	-2.00
Oracle	1,468	0.04	1,474	0.04	-1.21
WebLogic	1,239	0.04	1,223	0.04	0.49
FileMakerPro	1,203	0.04	1,187	0.04	0.53
Boa	1,175	0.03	1,187	0.04	-1.81
BIG-IP	1,105	0.03	1,111	0.03	-1.34
WebSite	1,075	0.03	1,113	0.03	-4.19
AnWeb	1,048	0.03	985	0.03	5.54
III	1,040	0.03	1,039	0.03	-0.71
thttpd	1,020	0.03	988	0.03	2.41
CommuniGatePro	989	0.03	983	0.03	-0.20
WebSitePro	960	0.03	1,018	0.03	-6.45
LiteSpeed	957	0.03	849	0.03	11.82
EZproxy	956	0.03	932	0.03	1.75
PowerSchool	954	0.03	931	0.03	1.65
AkamaiGHost	951	0.03	1,034	0.03	-8.77
Web	886	0.03	788	0.02	11.53
4D_WebSTAR_S	872	0.03	881	0.03	-1.82
EdgePrism	838	0.02	782	0.02	6.30
BigIP	831	0.02	716	0.02	15.13
httpd+ssl	799	0.02	808	0.02	-1.91
AOLserver	713	0.02	711	0.02	-0.52
cpsrvd	657	0.02	622	0.02	4.78
4D_WebStar_D	639	0.02	652	0.02	-2.78
WebtoB	635	0.02	654	0.02	-3.69
Stronghold	549	0.02	578	0.02	-5.78
Microsoft-HTTPAPI	541	0.02	355	0.01	51.17
DeleGate	537	0.02	534	0.02	-0.25
SAMBAR	534	0.02	541	0.02	-2.09
redir-httpd	509	0.01	503	0.01	0.38
Oracle9iAS	502	0.01	495	0.01	0.60
ListManagerWeb	495	0.01	474	0.01	3.59
ENIAC	460	0.01	402	0.01	13.51
NetWare-Enterprise-Web-Server	458	0.01	473	0.01	-3.95
NetCache	454	0.01	457	0.01	-1.45
Abyss	450	0.01	446	0.01	0.09
httpd	430	0.01	416	0.01	2.54
WWW	418	0.01	412	0.01	0.64
Roxen	411	0.01	414	0.01	-1.52
Orion	404	0.01	406	0.01	-1.29
Sun-Java-System-Web-Server	394	0.01	382	0.01	2.31
WebSphere	390	0.01	385	0.01	0.49
Nost	387	0.01	388	0.01	-1.06
Netscape-FastTrack	374	0.01	383	0.01	-3.13
Ultraseek	359	0.01	359	0.01	-0.80
""	349	0.01	339	0.01	2.12
NCSA	341	0.01	339	0.01	-0.22
Blocked	340	0.01	351	0.01	-3.91
IBM-HTTP-Server	329	0.01	332	0.01	-1.70
Power	324	0.01	302	0.01	6.42
JRun	323	0.01	317	0.01	1.07
IIS	308	0.01	268	0.01	14.00
OSU	307	0.01	311	0.01	-2.08
Indy	307	0.01	288	0.01	5.74
Secured	305	0.01	313	0.01	-3.34
NS_6.1	297	0.01	293	0.01	0.55
Xitami	294	0.01	304	0.01	-4.07
Server	289	0.01	246	0.01	16.54
Acenet	284	0.01	315	0.01	-10.57
gws	270	0.01	278	0.01	-3.66
Mittwald	267	0.01	259	0.01	2.26
Jeus	239	0.01	231	0.01	2.63
FirstClass	230	0.01	238	0.01	-4.14
Rumpus	209	0.01	204	0.01	1.63
Polaris	209	0.01	218	0.01	-4.90
AppleShareIP	202	0.01	209	0.01	-4.13
Apache-NeoNova	196	0.01	197	0.01	-1.31
DinaHTTPd	192	0.01	187	0.01	1.85
CoralWebPrx	191	0.01	189	0.01	0.25
FJapache	190	0.01	189	0.01	-0.28
UserLand	186	0.01	184	0.01	0.27

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.