You are viewing an outdated report.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) 63,024,967 hostnames, but only 5,088,712 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	September 2012 Count	September 2012 %	August 2012 Count	August 2012 %	Growth %
Apache	3,004,041	59.03	2,988,415	59.06	-0.05
Microsoft-IIS	1,013,247	19.91	1,012,571	20.01	-0.51
null	404,782	7.95	403,428	7.97	-0.24
nginx	231,345	4.55	224,556	4.44	2.43
Microsoft-HTTPAPI	92,629	1.82	89,724	1.77	2.65
Apache-Coyote	52,676	1.04	52,338	1.03	0.07
IdeaWebServer	45,643	0.90	45,340	0.90	0.09
Rapidsite	30,427	0.60	31,155	0.62	-2.90
LiteSpeed	24,216	0.48	23,627	0.47	1.91
lighttpd	21,726	0.43	21,750	0.43	-0.68
A	13,808	0.27	13,967	0.28	-1.70
Lotus-Domino	10,569	0.21	10,581	0.21	-0.69
BigIP	8,792	0.17	8,583	0.17	1.85
IBM_HTTP_Server	6,726	0.13	6,700	0.13	-0.19
squid	6,618	0.13	6,467	0.13	1.75
Zope	3,515	0.07	3,498	0.07	-0.09
AkamaiGHost	3,478	0.07	3,233	0.06	6.96
Oracle-Application-Server-10g	3,452	0.07	3,485	0.07	-1.51
HTTPD	3,125	0.06	3,056	0.06	1.67
cloudflare-nginx	3,112	0.06	3,082	0.06	0.40
Resin	3,070	0.06	3,065	0.06	-0.41
Cougar	2,056	0.04	2,095	0.04	-2.42
Sun-ONE-Web-Server	2,044	0.04	2,056	0.04	-1.15
Zeus	2,021	0.04	2,044	0.04	-1.69
EZproxy	2,012	0.04	1,977	0.04	1.19
-	1,852	0.04	1,977	0.04	-6.86
WDaemon	1,751	0.03	1,736	0.03	0.29
IceWarp	1,568	0.03	1,570	0.03	-0.70
Web	1,567	0.03	1,575	0.03	-1.08
Netscape-Enterprise	1,565	0.03	1,585	0.03	-1.83
Varnish	1,458	0.03	1,402	0.03	3.40
GWS	1,256	0.02	1,271	0.03	-1.75
xServers	1,205	0.02	1,190	0.02	0.68
apache	1,202	0.02	1,190	0.02	0.43
III	1,200	0.02	1,194	0.02	-0.07
Cherokee	1,157	0.02	1,164	0.02	-1.17
thttpd	1,051	0.02	1,038	0.02	0.67
Boa	976	0.02	969	0.02	0.15
Sun-Java-System-Web-Server	953	0.02	958	0.02	-1.09
Oracle	949	0.02	947	0.02	-0.36
Apache-AdvancedExtranetServer	946	0.02	958	0.02	-1.82
cpsrvd	931	0.02	932	0.02	-0.68
httpd	925	0.02	929	0.02	-1.00
Nginx	855	0.02	841	0.02	1.08
kangle	852	0.02	842	0.02	0.61
Rumpus	850	0.02	833	0.02	1.46
sffe	849	0.02	810	0.02	4.21
CommuniGatePro	830	0.02	839	0.02	-1.64
Sun	772	0.02	761	0.02	0.86
Tengine	754	0.01	717	0.01	4.56
Jetty	748	0.01	758	0.01	-1.88
Bomgar	711	0.01	696	0.01	1.57
WWW	680	0.01	687	0.01	-1.59
GlassFish	638	0.01	600	0.01	5.72
AnWeb	601	0.01	583	0.01	2.50
WebServerX	586	0.01	604	0.01	-3.54
MochiWeb	582	0.01	468	0.01	23.65
CloudFront	569	0.01	749	0.01	-24.47
NOYB	568	0.01	571	0.01	-1.09
FC	514	0.01	483	0.01	5.81
redir-httpd	513	0.01	513	0.01	-0.57
WebtoB	509	0.01	525	0.01	-3.60
Server	508	0.01	500	0.01	1.02
Oracle-Application-Server-11g	494	0.01	456	0.01	7.71
Ipswitch-IMail	479	0.01	491	0.01	-3.00
ListManagerWeb	476	0.01	486	0.01	-2.62
IBM_HTTP_SERVER	471	0.01	476	0.01	-1.62
DinaHTTPd	436	0.01	429	0.01	1.05
Abyss	428	0.01	414	0.01	2.79
4D_WebStar_D	413	0.01	436	0.01	-5.82
FileMakerPro	405	0.01	428	0.01	-5.92
EdgePrism	397	0.01	387	0.01	2.00
AOLserver	390	0.01	395	0.01	-1.83
WebServer	375	0.01	381	0.01	-2.14
WebSphere	373	0.01	367	0.01	1.05
WebSTAR	369	0.01	379	0.01	-3.20
Oracle-iPlanet-Web-Server	368	0.01	363	0.01	0.80
Unknown	358	0.01	362	0.01	-1.67
HTTP	354	0.01	342	0.01	2.92
WebLogic	352	0.01	359	0.01	-2.51
smartcds	351	0.01	301	0.01	15.94
Demandware	347	0.01	327	0.01	5.51
Secured	345	0.01	325	0.01	5.55
TWS	340	0.01	338	0.01	0.02
SAP	333	0.01	332	0.01	-0.27
FlashCom	323	0.01	297	0.01	8.13
Indy	305	0.01	314	0.01	-3.42
OpenCms	300	0.01	296	0.01	0.77
PWS	296	0.01	243	0.00	21.11
IIS	292	0.01	277	0.01	4.81
Power	286	0.01	283	0.01	0.48
WS	282	0.01	279	0.01	0.50
JRun	278	0.01	278	0.01	-0.57
Roxen	277	0.01	278	0.01	-0.93
eYouWS	274	0.01	271	0.01	0.53
WebSite	261	0.01	253	0.01	2.57
WP	258	0.01	248	0.00	3.44
SonicWALL	247	0.00	0	0.00	N/A
ApacheBooster	246	0.00	0	0.00	N/A
RomPager	243	0.00	270	0.01	-10.52

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.