You are viewing an outdated report.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) 56,076,085 hostnames, but only 4,774,543 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	April 2016 Count	April 2016 %	March 2016 Count	March 2016 %	Growth %
Apache	2,445,774	51.23	2,872,330	51.43	-0.40
Microsoft-IIS	714,937	14.97	867,110	15.53	-3.56
nginx	681,233	14.27	761,728	13.64	4.61
null	345,019	7.23	411,431	7.37	-1.91
Microsoft-HTTPAPI	171,413	3.59	199,289	3.57	0.61
cloudflare-nginx	68,754	1.44	71,538	1.28	12.42
Apache-Coyote	52,801	1.11	61,081	1.09	1.12
IdeaWebServer	45,494	0.95	53,979	0.97	-1.41
LiteSpeed	30,844	0.65	34,858	0.62	3.50
BigIP	17,074	0.36	19,715	0.35	1.30
lighttpd	12,626	0.26	13,887	0.25	6.35
IIS	12,279	0.26	17,785	0.32	-19.24
AkamaiGHost	8,830	0.18	11,517	0.21	-10.32
squid	8,777	0.18	10,357	0.19	-0.87
Tengine	5,830	0.12	7,092	0.13	-3.84
A	5,770	0.12	8,887	0.16	-24.05
Lotus-Domino	5,696	0.12	6,704	0.12	-0.61
WWW	4,986	0.10	6,378	0.11	-8.56
Rapidsite	4,530	0.09	6,133	0.11	-13.60
Flywheel	4,263	0.09	4,656	0.08	7.10
Safedog	4,253	0.09	5,104	0.09	-2.53
Cowboy	4,121	0.09	5,589	0.10	-13.75
sffe	4,095	0.09	4,453	0.08	7.57
Varnish	3,523	0.07	3,900	0.07	5.67
GSHD	3,015	0.06	3,303	0.06	6.77
AmazonS3	2,897	0.06	2,786	0.05	21.63
kangle	2,819	0.06	3,444	0.06	-4.25
openresty	2,792	0.06	2,767	0.05	18.03
EZproxy	2,594	0.05	2,609	0.05	16.30
CloudFront	2,199	0.05	2,537	0.05	1.39
IBM_HTTP_Server	2,181	0.05	2,632	0.05	-3.07
Resin	2,074	0.04	2,334	0.04	3.94
Zope	1,815	0.04	2,149	0.04	-1.21
-	1,790	0.04	2,006	0.04	4.38
WDaemon	1,430	0.03	1,494	0.03	11.96
Destiny	1,404	0.03	0	0.00	N/A
Oracle-Application-Server-10g	1,365	0.03	1,565	0.03	2.02
wts	1,322	0.03	464	0.01	233.27
IceWarp	1,223	0.03	1,249	0.02	14.54
xServers	1,201	0.03	1,449	0.03	-3.05
III	1,105	0.02	1,107	0.02	16.76
GlassFish	1,103	0.02	1,287	0.02	0.25
Pantheon	1,091	0.02	1,151	0.02	10.88
Cougar	957	0.02	974	0.02	14.93
NetBox	940	0.02	807	0.01	36.25
Rumpus	917	0.02	952	0.02	12.67
Web	887	0.02	1,063	0.02	-2.39
Bomgar	800	0.02	813	0.01	15.10
ScreenConnect	788	0.02	801	0.01	15.07
Oracle-Application-Server-11g	787	0.02	858	0.02	7.29
YxlinkWAF	762	0.02	835	0.01	6.75
CHO	665	0.01	833	0.01	-6.62
thttpd	660	0.01	701	0.01	10.13
PWS	655	0.01	681	0.01	12.51
ATS	655	0.01	717	0.01	6.86
WebServer	603	0.01	699	0.01	0.91
Boa	602	0.01	615	0.01	14.50
EdgePrism	590	0.01	605	0.01	14.07
httpd	577	0.01	635	0.01	6.29
CommuniGatePro	555	0.01	561	0.01	15.72
Oracle	553	0.01	609	0.01	6.22
Sun-ONE-Web-Server	550	0.01	753	0.01	-14.56
*****************	543	0.01	639	0.01	-0.60
ws-httpd	531	0.01	578	0.01	7.46
Icecast	511	0.01	509	0.01	17.43
Black	510	0.01	581	0.01	2.68
kisa	508	0.01	536	0.01	10.86
redir-httpd	486	0.01	505	0.01	12.57
Sun	485	0.01	558	0.01	1.67
Protected	481	0.01	520	0.01	8.20
Nginx-VPSSIM	462	0.01	448	0.01	20.63
Zeus	460	0.01	553	0.01	-2.70
Server	450	0.01	466	0.01	12.96
Oracle-iPlanet-Web-Server	446	0.01	445	0.01	17.24
Cherokee	439	0.01	481	0.01	6.76
WowzaStreamingEngine	433	0.01	437	0.01	15.90
Nginx	417	0.01	0	0.00	N/A
1	416	0.01	0	0.00	N/A
SonicWALL	401	0.01	454	0.01	3.32
Google	400	0.01	411	0.01	13.84
YUNDUN	394	0.01	0	0.00	N/A
QRATOR	377	0.01	378	0.01	16.66
Apache-AdvancedExtranetServer	367	0.01	412	0.01	4.20
GWS	353	0.01	374	0.01	10.40
XiakeWeb	352	0.01	484	0.01	-14.93
cc-web	343	0.01	338	0.01	18.70
TWebAP	341	0.01	439	0.01	-9.14
yunjiasu-nginx	337	0.01	418	0.01	-5.69
Unknown	335	0.01	377	0.01	3.94
gunicorn	333	0.01	372	0.01	4.71
Netscape-Enterprise	333	0.01	423	0.01	-7.91
Jetty	328	0.01	337	0.01	13.85
Abyss	320	0.01	373	0.01	0.35
cpsrvd	310	0.01	323	0.01	12.27
SAP	306	0.01	329	0.01	8.80
FlashCom	306	0.01	319	0.01	12.21
ngx_openresty	302	0.01	337	0.01	4.82
smartcds	299	0.01	0	0.00	N/A
NginxPlus	295	0.01	327	0.01	5.53
Footprint	262	0.01	275	0.00	11.44

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.