You are viewing an outdated report. The latest version of this report was published on January 1st, 2025

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) 37,024,911 hostnames, but only 3,718,561 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 2009 Count	February 2009 %	January 2009 Count	January 2009 %	Growth %
Apache	2,157,058	58.01	2,149,861	57.94	0.12
Microsoft-IIS	979,126	26.33	985,834	26.57	-0.89
null	258,325	6.95	254,694	6.86	1.21
Rapidsite	59,341	1.60	59,936	1.62	-1.20
Apache-Coyote	28,907	0.78	28,642	0.77	0.71
nginx	26,327	0.71	22,768	0.61	15.39
IdeaWebServer	22,993	0.62	22,637	0.61	1.36
lighttpd	17,342	0.47	17,219	0.46	0.50
A	17,094	0.46	17,637	0.48	-3.28
Lotus-Domino	13,060	0.35	13,276	0.36	-1.83
Netscape-Enterprise	8,667	0.23	8,955	0.24	-3.42
IBM_HTTP_Server	5,750	0.15	5,710	0.15	0.49
Microsoft-HTTPAPI	4,718	0.13	3,860	0.10	21.97
Zope	4,634	0.12	4,688	0.13	-1.36
squid	4,165	0.11	4,144	0.11	0.29
Zeus	3,998	0.11	3,945	0.11	1.13
Sun-ONE-Web-Server	3,838	0.10	3,860	0.10	-0.78
Oracle-Application-Server-10g	3,725	0.10	3,742	0.10	-0.66
Resin	3,438	0.09	3,451	0.09	-0.59
Apache-AdvancedExtranetServer	2,916	0.08	3,019	0.08	-3.62
LiteSpeed	2,864	0.08	2,427	0.07	17.76
Cougar	2,257	0.06	2,162	0.06	4.17
BigIP	2,213	0.06	2,080	0.06	6.17
WebServer	2,110	0.06	2,123	0.06	-0.82
NOYB	2,022	0.05	2,576	0.07	-21.67
GWS	1,966	0.05	1,954	0.05	0.40
AkamaiGHost	1,800	0.05	1,568	0.04	14.55
WebServerX	1,700	0.05	1,696	0.05	0.02
IceWarp	1,608	0.04	1,595	0.04	0.60
WDaemon	1,593	0.04	1,606	0.04	-1.02
IBM_HTTP_SERVER	1,546	0.04	1,605	0.04	-3.88
Jetty	1,522	0.04	1,538	0.04	-1.25
WWW	1,434	0.04	1,490	0.04	-3.96
Ipswitch-IMail	1,353	0.04	1,411	0.04	-4.31
Oracle	1,320	0.04	1,357	0.04	-2.93
Boa	1,251	0.03	1,259	0.03	-0.85
EZproxy	1,188	0.03	1,163	0.03	1.93
thttpd	1,130	0.03	1,167	0.03	-3.37
WebLogic	1,108	0.03	1,142	0.03	-3.18
WebSTAR	1,101	0.03	1,126	0.03	-2.43
III	1,083	0.03	1,087	0.03	-0.58
Web	1,074	0.03	1,049	0.03	2.17
PowerSchool	1,055	0.03	1,034	0.03	1.82
AnWeb	994	0.03	1,025	0.03	-3.23
CommuniGatePro	991	0.03	1,005	0.03	-1.60
WebSite	975	0.03	1,000	0.03	-2.71
FileMakerPro	942	0.03	979	0.03	-3.98
BIG-IP	890	0.02	925	0.02	-3.99
Sun-Java-System-Web-Server	844	0.02	786	0.02	7.15
cpsrvd	746	0.02	723	0.02	2.96
WebSitePro	707	0.02	720	0.02	-2.01
httpd	704	0.02	661	0.02	6.28
4D_WebSTAR_S	679	0.02	697	0.02	-2.79
4D_WebStar_D	676	0.02	676	0.02	-0.21
WebtoB	640	0.02	639	0.02	-0.05
AOLserver	626	0.02	642	0.02	-2.70
ListManagerWeb	619	0.02	619	0.02	-0.21
gws	597	0.02	550	0.01	8.32
ThirdSphere	533	0.01	285	0.01	86.62
DeleGate	530	0.01	531	0.01	-0.40
redir-httpd	514	0.01	513	0.01	-0.02
EdgePrism	513	0.01	476	0.01	7.55
SAMBAR	453	0.01	470	0.01	-3.82
HTTPD	449	0.01	421	0.01	6.43
""	445	0.01	442	0.01	0.47
Abyss	439	0.01	430	0.01	1.88
Nost	437	0.01	435	0.01	0.25
JRun	423	0.01	426	0.01	-0.91
Stronghold	421	0.01	440	0.01	-4.52
NetCache	418	0.01	430	0.01	-3.00
Blocked	418	0.01	418	0.01	-0.21
Sun	392	0.01	360	0.01	8.66
Roxen	387	0.01	387	0.01	-0.21
WebSphere	378	0.01	390	0.01	-3.28
Oracle9iAS	360	0.01	386	0.01	-6.93
Secured	355	0.01	357	0.01	-0.77
Orion	344	0.01	358	0.01	-4.11
httpd+ssl	339	0.01	388	0.01	-12.81
Ultraseek	339	0.01	345	0.01	-1.95
Rumpus	328	0.01	328	0.01	-0.21
ENIAC	324	0.01	320	0.01	1.04
IIS	313	0.01	310	0.01	0.75
Indy	308	0.01	307	0.01	0.11
NetWare-Enterprise-Web-Server	300	0.01	310	0.01	-3.43
Server	292	0.01	294	0.01	-0.89
MediaFire-HTTP	291	0.01	275	0.01	5.59
NCSA	277	0.01	276	0.01	0.15
Protected	274	0.01	276	0.01	-0.93
Xitami	270	0.01	261	0.01	3.23
OSU	261	0.01	264	0.01	-1.34
DinaHTTPd	249	0.01	250	0.01	-0.61
Netscape-FastTrack	248	0.01	253	0.01	-2.18
Power	244	0.01	268	0.01	-9.15
Jeus	228	0.01	235	0.01	-3.18
IBM-HTTP-Server	214	0.01	233	0.01	-8.35
SAP	211	0.01	204	0.01	3.21
Kerio	209	0.01	210	0.01	-0.69
FJapache	209	0.01	215	0.01	-3.00
Polaris	206	0.01	207	0.01	-0.69
Hanbiro	203	0.01	202	0.01	0.28

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.