You are viewing an outdated report.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) 28,651,546 hostnames, but only 3,448,280 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	April 2008 Count	April 2008 %	March 2008 Count	March 2008 %	Growth %
Apache	2,001,560	58.05	1,982,256	58.00	0.07
Microsoft-IIS	937,987	27.20	934,973	27.36	-0.57
null	217,303	6.30	211,695	6.19	1.74
Rapidsite	66,956	1.94	67,406	1.97	-1.55
Apache-Coyote	23,396	0.68	22,806	0.67	1.67
IdeaWebServer	17,614	0.51	16,917	0.49	3.19
A	16,191	0.47	16,038	0.47	0.06
Lotus-Domino	13,769	0.40	13,757	0.40	-0.80
nginx	11,888	0.34	10,667	0.31	10.45
Netscape-Enterprise	10,448	0.30	10,735	0.31	-3.54
lighttpd	9,853	0.29	9,379	0.27	4.12
IBM_HTTP_Server	4,882	0.14	4,798	0.14	0.84
Zope	4,465	0.13	4,480	0.13	-1.22
Zeus	4,390	0.13	4,379	0.13	-0.64
WebServer	4,081	0.12	4,102	0.12	-1.40
Apache-AdvancedExtranetServer	4,029	0.12	4,193	0.12	-4.77
Sun-ONE-Web-Server	3,913	0.11	3,980	0.12	-2.56
squid	3,510	0.10	3,455	0.10	0.69
Oracle-Application-Server-10g	3,356	0.10	3,287	0.10	1.19
NOYB	3,245	0.09	3,290	0.10	-2.25
Resin	3,240	0.09	3,217	0.09	-0.18
Cougar	2,002	0.06	2,012	0.06	-1.38
IBM_HTTP_SERVER	1,938	0.06	1,963	0.06	-2.15
WebServerX	1,744	0.05	1,651	0.05	4.69
Ipswitch-IMail	1,684	0.05	1,723	0.05	-3.13
GWS	1,679	0.05	1,633	0.05	1.90
IceWarp	1,578	0.05	1,558	0.05	0.38
Jetty	1,551	0.04	1,556	0.05	-1.21
WDaemon	1,484	0.04	1,485	0.04	-0.96
Oracle	1,462	0.04	1,468	0.04	-1.30
WebSTAR	1,433	0.04	1,476	0.04	-3.78
WebLogic	1,246	0.04	1,239	0.04	-0.33
FileMakerPro	1,168	0.03	1,203	0.04	-3.77
Boa	1,160	0.03	1,175	0.03	-2.16
LiteSpeed	1,103	0.03	957	0.03	14.23
WebSite	1,065	0.03	1,075	0.03	-1.81
BIG-IP	1,062	0.03	1,105	0.03	-4.75
III	1,054	0.03	1,040	0.03	0.44
AnWeb	1,044	0.03	1,048	0.03	-1.27
thttpd	1,012	0.03	1,020	0.03	-1.67
CommuniGatePro	993	0.03	989	0.03	-0.49
BigIP	979	0.03	831	0.02	16.76
EZproxy	975	0.03	956	0.03	1.08
PowerSchool	968	0.03	954	0.03	0.56
WebSitePro	958	0.03	960	0.03	-1.10
AkamaiGHost	952	0.03	951	0.03	-0.79
Web	889	0.03	886	0.03	-0.55
EdgePrism	886	0.03	838	0.02	4.79
4D_WebSTAR_S	844	0.02	872	0.03	-4.07
AOLserver	700	0.02	713	0.02	-2.70
cpsrvd	663	0.02	657	0.02	0.01
4D_WebStar_D	640	0.02	639	0.02	-0.74
WebtoB	620	0.02	635	0.02	-3.23
Microsoft-HTTPAPI	604	0.02	541	0.02	10.65
httpd+ssl	585	0.02	799	0.02	-27.44
Stronghold	562	0.02	549	0.02	1.46
SAMBAR	543	0.02	534	0.02	0.78
DeleGate	537	0.02	537	0.02	-0.89
redir-httpd	511	0.01	509	0.01	-0.50
ListManagerWeb	506	0.01	495	0.01	1.31
Oracle9iAS	488	0.01	502	0.01	-3.65
ENIAC	476	0.01	460	0.01	2.56
WWW	469	0.01	418	0.01	11.20
NetWare-Enterprise-Web-Server	447	0.01	458	0.01	-3.27
httpd	442	0.01	430	0.01	1.88
NetCache	441	0.01	454	0.01	-3.73
Abyss	434	0.01	450	0.01	-4.41
Sun-Java-System-Web-Server	423	0.01	394	0.01	6.40
Roxen	414	0.01	411	0.01	-0.17
Orion	402	0.01	404	0.01	-1.38
Nost	389	0.01	387	0.01	-0.38
WebSphere	388	0.01	390	0.01	-1.40
""	378	0.01	349	0.01	7.35
Netscape-FastTrack	364	0.01	374	0.01	-3.54
Ultraseek	362	0.01	359	0.01	-0.06
Blocked	345	0.01	340	0.01	0.57
JRun	336	0.01	323	0.01	3.10
NCSA	329	0.01	341	0.01	-4.38
IBM-HTTP-Server	315	0.01	329	0.01	-5.11
Power	307	0.01	324	0.01	-6.09
OSU	307	0.01	307	0.01	-0.89
Indy	304	0.01	307	0.01	-1.86
IIS	302	0.01	308	0.01	-2.82
Xitami	295	0.01	294	0.01	-0.55
Secured	290	0.01	305	0.01	-5.76
Acenet	285	0.01	284	0.01	-0.54
gws	280	0.01	270	0.01	2.78
Mittwald	280	0.01	267	0.01	3.94
Server	276	0.01	289	0.01	-5.35
NS_6.1	265	0.01	297	0.01	-11.57
Jeus	233	0.01	239	0.01	-3.38
Rumpus	225	0.01	209	0.01	6.70
FirstClass	218	0.01	230	0.01	-6.06
Polaris	209	0.01	209	0.01	-0.89
DinaHTTPd	202	0.01	192	0.01	4.27
Apache-NeoNova	201	0.01	196	0.01	1.64
CoralWebPrx	199	0.01	191	0.01	3.26
Sun	197	0.01	0	0.00	N/A
AppleShareIP	195	0.01	202	0.01	-4.32
FJapache	194	0.01	190	0.01	1.20

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.