You are viewing an outdated report.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) 58,744,324 hostnames, but only 4,799,466 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	January 2012 Count	January 2012 %	December 2011 Count	December 2011 %	Growth %
Apache	2,852,131	59.43	2,819,459	59.34	0.15
Microsoft-IIS	1,005,972	20.96	1,003,721	21.12	-0.78
null	369,172	7.69	365,050	7.68	0.12
nginx	179,340	3.74	173,261	3.65	2.48
Microsoft-HTTPAPI	67,855	1.41	65,190	1.37	3.05
Apache-Coyote	48,198	1.00	47,776	1.01	-0.12
IdeaWebServer	40,967	0.85	40,444	0.85	0.28
Rapidsite	37,525	0.78	38,386	0.81	-3.22
lighttpd	20,655	0.43	20,563	0.43	-0.55
LiteSpeed	18,719	0.39	17,948	0.38	3.26
A	15,071	0.31	15,217	0.32	-1.95
Lotus-Domino	11,001	0.23	11,018	0.23	-1.15
BigIP	7,256	0.15	7,087	0.15	1.36
IBM_HTTP_Server	6,719	0.14	6,734	0.14	-1.22
squid	5,804	0.12	6,974	0.15	-17.61
Oracle-Application-Server-10g	3,791	0.08	3,795	0.08	-1.10
Zope	3,726	0.08	3,738	0.08	-1.32
Resin	3,182	0.07	3,187	0.07	-1.15
AkamaiGHost	2,898	0.06	3,058	0.06	-6.18
HTTPD	2,457	0.05	2,372	0.05	2.55
Sun-ONE-Web-Server	2,293	0.05	2,323	0.05	-2.28
Zeus	2,279	0.05	2,279	0.05	-1.00
Cougar	2,232	0.05	2,273	0.05	-2.78
Netscape-Enterprise	1,882	0.04	1,937	0.04	-3.81
EZproxy	1,852	0.04	1,792	0.04	2.32
WDaemon	1,706	0.04	1,718	0.04	-1.69
IceWarp	1,580	0.03	1,569	0.03	-0.30
Web	1,502	0.03	1,496	0.03	-0.60
GWS	1,373	0.03	1,387	0.03	-2.00
Varnish	1,193	0.02	1,085	0.02	8.86
III	1,186	0.02	1,165	0.02	0.79
Cherokee	1,169	0.02	1,129	0.02	2.51
Apache-AdvancedExtranetServer	1,128	0.02	1,132	0.02	-1.35
-	1,093	0.02	1,177	0.02	-8.06
Sun-Java-System-Web-Server	1,090	0.02	1,106	0.02	-2.43
thttpd	1,076	0.02	1,083	0.02	-1.64
apache	1,058	0.02	1,043	0.02	0.43
Apachenginx	1,030	0.02	974	0.02	4.69
cloudflare-nginx	1,028	0.02	1,037	0.02	-1.86
httpd	1,012	0.02	1,002	0.02	-0.01
Oracle	1,012	0.02	1,022	0.02	-1.97
Boa	993	0.02	1,002	0.02	-1.89
cpsrvd	882	0.02	872	0.02	0.14
CommuniGatePro	878	0.02	886	0.02	-1.89
Jetty	873	0.02	889	0.02	-2.78
xServers	848	0.02	686	0.01	22.38
Sun	778	0.02	773	0.02	-0.36
Nginx	754	0.02	748	0.02	-0.20
Rumpus	733	0.02	707	0.01	2.64
sffe	731	0.02	887	0.02	-18.41
WWW	717	0.01	735	0.02	-3.42
AnWeb	711	0.01	716	0.02	-1.69
WebServerX	708	0.01	745	0.02	-5.91
NOYB	665	0.01	680	0.01	-3.18
ListManagerWeb	650	0.01	730	0.02	-11.85
Bomgar	634	0.01	613	0.01	2.39
Ipswitch-IMail	586	0.01	615	0.01	-5.67
WebtoB	578	0.01	581	0.01	-1.51
IBM_HTTP_SERVER	562	0.01	583	0.01	-4.56
4D_WebStar_D	536	0.01	517	0.01	2.64
redir-httpd	513	0.01	512	0.01	-0.80
FileMakerPro	497	0.01	480	0.01	2.51
BIG-IP	495	0.01	470	0.01	4.27
Server	461	0.01	449	0.01	1.65
GlassFish	458	0.01	440	0.01	3.05
WebServer	452	0.01	453	0.01	-1.22
WebSTAR	452	0.01	480	0.01	-6.77
FC	434	0.01	456	0.01	-5.77
PowerSchool	427	0.01	525	0.01	-19.48
AOLserver	422	0.01	409	0.01	2.15
Abyss	405	0.01	397	0.01	1.00
EdgePrism	399	0.01	394	0.01	0.26
DinaHTTPd	392	0.01	373	0.01	4.05
WebLogic	384	0.01	405	0.01	-6.13
WebSphere	364	0.01	373	0.01	-3.39
WebSite	361	0.01	360	0.01	-0.72
Unknown	359	0.01	347	0.01	2.43
WebSitePro	332	0.01	335	0.01	-1.88
JRun	324	0.01	322	0.01	-0.38
Indy	316	0.01	309	0.01	1.25
SAP	314	0.01	313	0.01	-0.68
Secured	306	0.01	316	0.01	-4.13
OpenCms	303	0.01	297	0.01	1.00
Roxen	292	0.01	299	0.01	-3.32
Oracle-iPlanet-Web-Server	291	0.01	274	0.01	5.14
Oracle-Application-Server-11g	272	0.01	253	0.01	6.44
4D_WebSTAR_S	269	0.01	288	0.01	-7.53
RomPager	268	0.01	268	0.01	-1.00
IIS	253	0.01	253	0.01	-1.00
WS	249	0.01	243	0.01	1.45
Power	249	0.01	257	0.01	-4.08
SAMBAR	245	0.01	249	0.01	-2.59
SW	236	0.00	272	0.01	-14.10
PWS	236	0.00	212	0.00	10.21
""	233	0.00	233	0.00	-1.00
HTTP	230	0.00	0	0.00	N/A
unknown	229	0.00	217	0.00	4.48
WebSEAL	224	0.00	219	0.00	1.26
kangle	213	0.00	0	0.00	N/A
Mod_Security	209	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.