You are viewing an outdated report. The latest version of this report was published on April 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) 49,753,055 hostnames, but only 4,312,748 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	December 2010 Count	December 2010 %	November 2010 Count	November 2010 %	Growth %
Apache	2,541,522	58.93	2,512,051	58.84	0.15
Microsoft-IIS	1,000,760	23.20	997,306	23.36	-0.67
null	328,242	7.61	326,295	7.64	-0.42
nginx	97,230	2.25	91,772	2.15	4.87
Rapidsite	49,312	1.14	50,275	1.18	-2.91
Apache-Coyote	41,211	0.96	40,518	0.95	0.68
Microsoft-HTTPAPI	35,319	0.82	33,187	0.78	5.35
IdeaWebServer	33,422	0.77	33,027	0.77	0.17
lighttpd	17,943	0.42	17,703	0.41	0.33
A	17,213	0.40	17,315	0.41	-1.60
Lotus-Domino	11,780	0.27	11,860	0.28	-1.68
LiteSpeed	11,169	0.26	10,901	0.26	1.42
IBM_HTTP_Server	6,668	0.15	6,658	0.16	-0.86
BigIP	5,455	0.13	5,274	0.12	2.38
squid	4,495	0.10	4,389	0.10	1.38
Oracle-Application-Server-10g	4,114	0.10	4,130	0.10	-1.40
Zope	4,075	0.09	4,121	0.10	-2.12
Resin	3,380	0.08	3,374	0.08	-0.84
AkamaiGHost	3,076	0.07	2,846	0.07	6.99
Sun-ONE-Web-Server	2,876	0.07	2,899	0.07	-1.80
Zeus	2,839	0.07	2,853	0.07	-1.50
Netscape-Enterprise	2,742	0.06	2,820	0.07	-3.75
Cougar	2,352	0.05	2,413	0.06	-3.52
WebServerX	1,723	0.04	1,665	0.04	2.44
WDaemon	1,689	0.04	1,708	0.04	-2.11
GWS	1,659	0.04	1,688	0.04	-2.71
IceWarp	1,599	0.04	1,599	0.04	-1.01
EZproxy	1,596	0.04	1,581	0.04	-0.07
Apache-AdvancedExtranetServer	1,532	0.04	1,563	0.04	-2.98
apache	1,450	0.03	1,398	0.03	2.67
HTTPD	1,431	0.03	1,407	0.03	0.68
PowerSchool	1,406	0.03	1,399	0.03	-0.52
Sun-Java-System-Web-Server	1,274	0.03	1,304	0.03	-3.29
Jetty	1,212	0.03	1,227	0.03	-2.22
thttpd	1,176	0.03	1,132	0.03	2.83
III	1,166	0.03	1,166	0.03	-1.01
Web	1,103	0.03	1,088	0.03	0.35
Oracle	1,103	0.03	1,088	0.03	0.35
NOYB	1,087	0.03	1,089	0.03	-1.19
Boa	1,064	0.02	1,053	0.02	0.02
httpd	1,050	0.02	1,060	0.02	-1.95
CommuniGatePro	915	0.02	915	0.02	-1.01
AnWeb	867	0.02	861	0.02	-0.32
IBM_HTTP_SERVER	856	0.02	873	0.02	-2.94
cpsrvd	842	0.02	842	0.02	-1.01
WWW	831	0.02	770	0.02	6.83
Ipswitch-IMail	822	0.02	851	0.02	-4.39
Sun	805	0.02	817	0.02	-2.47
ListManagerWeb	768	0.02	769	0.02	-1.14
Cherokee	693	0.02	650	0.02	5.54
WebtoB	649	0.02	639	0.01	0.54
WebSTAR	634	0.01	651	0.02	-3.60
4D_WebStar_D	631	0.01	650	0.02	-3.91
FileMakerPro	623	0.01	634	0.01	-2.73
Rumpus	622	0.01	615	0.01	0.11
sffe	579	0.01	584	0.01	-1.86
WebLogic	527	0.01	544	0.01	-4.11
redir-httpd	514	0.01	515	0.01	-1.21
BIG-IP	507	0.01	514	0.01	-2.36
DeleGate	483	0.01	485	0.01	-1.42
AOLserver	479	0.01	493	0.01	-3.82
WebSite	469	0.01	472	0.01	-1.64
Varnish	464	0.01	439	0.01	4.62
Bomgar	456	0.01	436	0.01	3.53
WebSitePro	438	0.01	441	0.01	-1.69
Secured	435	0.01	447	0.01	-3.67
JRun	430	0.01	434	0.01	-1.93
WebServer	412	0.01	410	0.01	-0.53
Power	409	0.01	389	0.01	4.08
Abyss	409	0.01	405	0.01	-0.04
4D_WebSTAR_S	385	0.01	385	0.01	-1.01
Server	377	0.01	366	0.01	1.96
WebSphere	372	0.01	375	0.01	-1.80
xServers	370	0.01	408	0.01	-10.23
EdgePrism	360	0.01	383	0.01	-6.96
Roxen	324	0.01	331	0.01	-3.11
Indy	323	0.01	332	0.01	-3.70
FC	311	0.01	285	0.01	8.02
""	302	0.01	318	0.01	-5.99
SAMBAR	296	0.01	315	0.01	-6.98
Stronghold	290	0.01	292	0.01	-1.69
SW	287	0.01	294	0.01	-3.37
SAP	278	0.01	275	0.01	0.07
IIS	264	0.01	268	0.01	-2.49
NetCache	262	0.01	256	0.01	1.31
ENIAC	261	0.01	257	0.01	0.53
CloudFront	255	0.01	253	0.01	-0.23
Orion	252	0.01	256	0.01	-2.56
IIS6	245	0.01	245	0.01	-1.01
NetBox	237	0.01	232	0.01	1.12
Ultraseek	234	0.01	244	0.01	-5.07
RomPager	219	0.01	199	0.00	8.94
Hanbiro	216	0.01	218	0.01	-1.92
TimmiT	213	0.00	210	0.00	0.40
OpenCms	213	0.00	211	0.00	-0.07
Oracle9iAS	212	0.00	213	0.00	-1.48
Unknown	202	0.00	0	0.00	N/A
BarracudaHTTP	198	0.00	195	0.00	0.51
VB	197	0.00	202	0.00	-3.46
Microsoft	197	0.00	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.