You are viewing an outdated report.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) 76,107,993 hostnames, but only 5,751,972 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 2015 Count	January 2015 %	December 2014 Count	December 2014 %	Growth %
Apache	3,087,849	53.68	3,076,894	54.00	-0.59
Microsoft-IIS	1,024,765	17.82	1,009,278	17.71	0.57
nginx	540,248	9.39	529,420	9.29	1.08
null	493,904	8.59	485,754	8.53	0.72
Microsoft-HTTPAPI	168,575	2.93	165,587	2.91	0.84
Apache-Coyote	62,279	1.08	61,416	1.08	0.45
IdeaWebServer	56,412	0.98	56,300	0.99	-0.75
IIS	39,502	0.69	39,284	0.69	-0.40
LiteSpeed	32,568	0.57	32,390	0.57	-0.40
lighttpd	18,874	0.33	19,024	0.33	-1.73
cloudflare-nginx	15,697	0.27	14,990	0.26	3.73
BigIP	15,513	0.27	15,505	0.27	-0.89
squid	10,436	0.18	10,428	0.18	-0.87
A	10,415	0.18	10,500	0.18	-1.75
AkamaiGHost	9,435	0.16	9,666	0.17	-3.31
Rapidsite	8,519	0.15	8,645	0.15	-2.39
Lotus-Domino	8,063	0.14	8,101	0.14	-1.41
Tengine	5,561	0.10	5,036	0.09	9.38
sffe	5,115	0.09	5,096	0.09	-0.58
Safedog	4,872	0.08	4,382	0.08	10.13
Cowboy	4,496	0.08	4,400	0.08	1.22
IBM_HTTP_Server	4,363	0.08	4,354	0.08	-0.74
WWW	3,911	0.07	3,098	0.05	25.05
Varnish	3,245	0.06	3,191	0.06	0.73
kangle	2,765	0.05	2,384	0.04	14.88
Resin	2,756	0.05	2,741	0.05	-0.40
Zope	2,651	0.05	2,658	0.05	-1.21
EZproxy	2,483	0.04	2,470	0.04	-0.42
AmazonS3	2,478	0.04	2,504	0.04	-1.97
Oracle-Application-Server-10g	2,289	0.04	2,333	0.04	-2.81
-	2,137	0.04	2,095	0.04	1.04
Flywheel	1,839	0.03	1,681	0.03	8.36
WDaemon	1,685	0.03	1,682	0.03	-0.77
openresty	1,540	0.03	1,483	0.03	2.86
Web	1,509	0.03	1,500	0.03	-0.35
GSHD	1,478	0.03	1,185	0.02	23.55
Cougar	1,444	0.03	1,454	0.03	-1.63
IceWarp	1,354	0.02	1,365	0.02	-1.74
CloudFront	1,343	0.02	1,115	0.02	19.31
xServers	1,256	0.02	1,213	0.02	2.57
GlassFish	1,213	0.02	1,195	0.02	0.55
III	1,169	0.02	1,171	0.02	-1.11
Zeus	1,117	0.02	1,147	0.02	-3.54
Sun-ONE-Web-Server	1,048	0.02	1,076	0.02	-3.52
Rumpus	1,008	0.02	1,002	0.02	-0.35
Oracle-Application-Server-11g	960	0.02	948	0.02	0.31
cpsrvd	941	0.02	930	0.02	0.23
smartcds	856	0.01	814	0.01	4.17
thttpd	854	0.01	852	0.01	-0.71
Bomgar	846	0.01	853	0.01	-1.76
FC	790	0.01	807	0.01	-3.03
Boa	759	0.01	759	0.01	-0.95
EdgePrism	738	0.01	774	0.01	-5.55
Oracle	700	0.01	692	0.01	0.20
httpd	697	0.01	691	0.01	-0.09
Sun	696	0.01	692	0.01	-0.37
CommuniGatePro	677	0.01	677	0.01	-0.95
Cherokee	665	0.01	691	0.01	-4.67
Demandware	655	0.01	648	0.01	0.12
WebServer	654	0.01	647	0.01	0.13
Netscape-Enterprise	652	0.01	659	0.01	-2.00
PWS	643	0.01	638	0.01	-0.17
GWS	624	0.01	628	0.01	-1.58
*****************	587	0.01	579	0.01	0.42
Pantheon	579	0.01	542	0.01	5.82
ATS	560	0.01	525	0.01	5.66
Apache-AdvancedExtranetServer	549	0.01	550	0.01	-1.13
Sun-Java-System-Web-Server	533	0.01	549	0.01	-3.83
ScreenConnect	533	0.01	509	0.01	3.73
Kucci	533	0.01	0	0.00	N/A
redir-httpd	510	0.01	510	0.01	-0.95
FlashCom	492	0.01	497	0.01	-1.94
kisa	484	0.01	483	0.01	-0.74
Jetty	482	0.01	478	0.01	-0.12
Oracle-iPlanet-Web-Server	479	0.01	484	0.01	-1.97
ngx_openresty	471	0.01	472	0.01	-1.16
SonicWALL	441	0.01	430	0.01	1.59
Google	423	0.01	423	0.01	-0.95
NOYB	420	0.01	423	0.01	-1.65
Abyss	405	0.01	404	0.01	-0.70
TWebAP	393	0.01	352	0.01	10.59
Server	391	0.01	385	0.01	0.60
WS	389	0.01	391	0.01	-1.45
YxlinkWAF	379	0.01	366	0.01	2.57
gunicorn	377	0.01	361	0.01	3.44
Unknown	371	0.01	369	0.01	-0.41
AnWeb	366	0.01	354	0.01	2.41
NetBox	358	0.01	339	0.01	4.61
WebServerX	352	0.01	346	0.01	0.77
SAP	348	0.01	351	0.01	-1.79
ASERVER	339	0.01	297	0.01	13.06
OpenCms	333	0.01	322	0.01	2.44
WebtoB	325	0.01	338	0.01	-4.76
Footprint	311	0.01	283	0.00	8.85
WebSphere	310	0.01	320	0.01	-4.04
maged	305	0.01	340	0.01	-11.14
QRATOR	305	0.01	294	0.01	2.76
uServ	301	0.01	0	0.00	N/A
yunjiasu-nginx	299	0.01	0	0.00	N/A
ghs	295	0.01	285	0.01	2.53

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.