You are viewing an outdated report. The latest version of this report was published on September 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) 37,540,103 hostnames, but only 3,734,630 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 2009 Count	March 2009 %	February 2009 Count	February 2009 %	Growth %
Apache	2,165,476	57.98	2,157,058	58.01	-0.04
Microsoft-IIS	977,761	26.18	979,126	26.33	-0.57
null	263,450	7.05	258,325	6.95	1.55
Rapidsite	59,026	1.58	59,341	1.60	-0.96
Apache-Coyote	29,139	0.78	28,907	0.78	0.37
nginx	28,012	0.75	26,327	0.71	5.94
IdeaWebServer	23,472	0.63	22,993	0.62	1.64
lighttpd	18,002	0.48	17,342	0.47	3.36
A	17,607	0.47	17,094	0.46	2.56
Lotus-Domino	13,055	0.35	13,060	0.35	-0.47
Netscape-Enterprise	8,695	0.23	8,667	0.23	-0.11
IBM_HTTP_Server	5,808	0.16	5,750	0.15	0.57
Microsoft-HTTPAPI	5,216	0.14	4,718	0.13	10.08
Zope	4,624	0.12	4,634	0.12	-0.65
squid	4,283	0.11	4,165	0.11	2.39
Zeus	3,991	0.11	3,998	0.11	-0.60
Sun-ONE-Web-Server	3,869	0.10	3,838	0.10	0.37
Oracle-Application-Server-10g	3,774	0.10	3,725	0.10	0.88
Resin	3,422	0.09	3,438	0.09	-0.89
LiteSpeed	3,209	0.09	2,864	0.08	11.56
Apache-AdvancedExtranetServer	2,854	0.08	2,916	0.08	-2.55
BigIP	2,296	0.06	2,213	0.06	3.30
Cougar	2,260	0.06	2,257	0.06	-0.30
WebServer	2,076	0.06	2,110	0.06	-2.03
GWS	1,981	0.05	1,966	0.05	0.33
NOYB	1,844	0.05	2,022	0.05	-9.20
WebServerX	1,661	0.04	1,700	0.05	-2.71
WDaemon	1,594	0.04	1,593	0.04	-0.37
IceWarp	1,583	0.04	1,608	0.04	-1.98
AkamaiGHost	1,530	0.04	1,800	0.05	-15.37
Jetty	1,521	0.04	1,522	0.04	-0.50
IBM_HTTP_SERVER	1,511	0.04	1,546	0.04	-2.68
WWW	1,444	0.04	1,434	0.04	0.26
Ipswitch-IMail	1,342	0.04	1,353	0.04	-1.24
Oracle	1,311	0.04	1,320	0.04	-1.11
Boa	1,261	0.03	1,251	0.03	0.37
EZproxy	1,208	0.03	1,188	0.03	1.25
thttpd	1,130	0.03	1,130	0.03	-0.43
WebLogic	1,116	0.03	1,108	0.03	0.29
III	1,089	0.03	1,083	0.03	0.12
PowerSchool	1,071	0.03	1,055	0.03	1.08
Web	1,065	0.03	1,074	0.03	-1.26
WebSTAR	1,064	0.03	1,101	0.03	-3.78
AnWeb	998	0.03	994	0.03	-0.03
CommuniGatePro	989	0.03	991	0.03	-0.63
FileMakerPro	928	0.02	942	0.03	-1.91
BIG-IP	909	0.02	890	0.02	1.70
WebSite	885	0.02	975	0.03	-9.62
Sun-Java-System-Web-Server	868	0.02	844	0.02	2.40
httpd	764	0.02	704	0.02	8.06
cpsrvd	748	0.02	746	0.02	-0.16
WebSitePro	693	0.02	707	0.02	-2.40
4D_WebSTAR_S	682	0.02	679	0.02	0.01
4D_WebStar_D	679	0.02	676	0.02	0.01
WebtoB	655	0.02	640	0.02	1.90
AOLserver	628	0.02	626	0.02	-0.11
ListManagerWeb	624	0.02	619	0.02	0.37
gws	621	0.02	597	0.02	3.57
DeleGate	530	0.01	530	0.01	-0.43
ThirdSphere	522	0.01	533	0.01	-2.49
redir-httpd	514	0.01	514	0.01	-0.43
EdgePrism	506	0.01	513	0.01	-1.79
HTTPD	453	0.01	449	0.01	0.46
""	449	0.01	445	0.01	0.46
SAMBAR	445	0.01	453	0.01	-2.19
Nost	434	0.01	437	0.01	-1.11
JRun	431	0.01	423	0.01	1.45
NetCache	428	0.01	418	0.01	1.95
Abyss	428	0.01	439	0.01	-2.93
Blocked	421	0.01	418	0.01	0.28
Stronghold	409	0.01	421	0.01	-3.27
Sun	405	0.01	392	0.01	2.87
WebSphere	386	0.01	378	0.01	1.68
Roxen	379	0.01	387	0.01	-2.49
Oracle9iAS	359	0.01	360	0.01	-0.71
Secured	340	0.01	355	0.01	-4.64
Orion	336	0.01	344	0.01	-2.75
Rumpus	335	0.01	328	0.01	1.69
Ultraseek	330	0.01	339	0.01	-3.07
ENIAC	325	0.01	324	0.01	-0.12
httpd+ssl	312	0.01	339	0.01	-8.36
Indy	309	0.01	308	0.01	-0.11
MediaFire-HTTP	300	0.01	291	0.01	2.65
NetWare-Enterprise-Web-Server	297	0.01	300	0.01	-1.43
IIS	294	0.01	313	0.01	-6.47
Server	283	0.01	292	0.01	-3.50
Protected	274	0.01	274	0.01	-0.43
NCSA	262	0.01	277	0.01	-5.82
Xitami	258	0.01	270	0.01	-4.86
DinaHTTPd	258	0.01	249	0.01	3.17
OSU	253	0.01	261	0.01	-3.48
Netscape-FastTrack	245	0.01	248	0.01	-1.63
Power	235	0.01	244	0.01	-4.10
Jeus	219	0.01	228	0.01	-4.36
Kerio	217	0.01	209	0.01	3.38
SAP	214	0.01	211	0.01	0.99
FJapache	207	0.01	209	0.01	-1.38
Polaris	206	0.01	206	0.01	-0.43
IBM-HTTP-Server	203	0.01	214	0.01	-5.55
Hanbiro	201	0.01	203	0.01	-1.41

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.