You are viewing an outdated report.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) 75,441,493 hostnames, but only 5,339,170 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	June 2017 Count	June 2017 %	May 2017 Count	May 2017 %	Growth %
Apache	2,529,801	47.38	2,526,676	47.36	0.05
nginx	890,312	16.68	881,312	16.52	0.95
Microsoft-IIS	857,428	16.06	853,972	16.01	0.33
null	384,825	7.21	381,549	7.15	0.79
Microsoft-HTTPAPI	220,670	4.13	221,546	4.15	-0.47
cloudflare-nginx	83,047	1.56	81,403	1.53	1.95
Apache-Coyote	51,547	0.97	51,442	0.96	0.13
LiteSpeed	38,352	0.72	37,904	0.71	1.11
IdeaWebServer	33,787	0.63	50,458	0.95	-33.09
BigIP	22,765	0.43	22,456	0.42	1.30
openresty	15,458	0.29	15,251	0.29	1.29
AkamaiGHost	14,900	0.28	13,371	0.25	11.36
Tengine	8,661	0.16	8,242	0.15	5.01
Flywheel	8,623	0.16	8,298	0.16	3.84
lighttpd	8,581	0.16	8,755	0.16	-2.06
WWW	7,164	0.13	6,775	0.13	5.67
IIS	6,190	0.12	6,904	0.13	-10.40
CloudFront	6,014	0.11	6,153	0.12	-2.33
A	5,836	0.11	5,910	0.11	-1.32
squid	5,559	0.10	5,761	0.11	-3.57
wts	5,521	0.10	5,683	0.11	-2.92
Lotus-Domino	5,226	0.10	5,257	0.10	-0.66
Safedog	4,919	0.09	4,944	0.09	-0.58
Varnish	4,616	0.09	4,638	0.09	-0.54
AmazonS3	3,707	0.07	3,901	0.07	-5.04
Cowboy	3,689	0.07	3,804	0.07	-3.09
kangle	3,588	0.07	3,589	0.07	-0.10
sffe	3,418	0.06	3,341	0.06	2.23
EZproxy	2,738	0.05	2,725	0.05	0.41
nginx-reuseport	2,276	0.04	2,170	0.04	4.81
Pantheon	1,866	0.03	1,931	0.04	-3.43
Resin	1,855	0.03	1,868	0.04	-0.77
Destiny	1,693	0.03	1,732	0.03	-2.32
Zope	1,663	0.03	1,678	0.03	-0.96
IBM_HTTP_Server	1,651	0.03	1,690	0.03	-2.38
YxlinkWAF	1,503	0.03	1,586	0.03	-5.30
nginx-upupw	1,499	0.03	1,410	0.03	6.24
WDaemon	1,257	0.02	1,257	0.02	-0.07
-	1,238	0.02	1,242	0.02	-0.39
GlassFish	1,187	0.02	1,163	0.02	1.99
IceWarp	1,152	0.02	1,148	0.02	0.28
Oracle-Application-Server-10g	1,101	0.02	1,101	0.02	-0.07
III	1,035	0.02	1,051	0.02	-1.59
xServers	981	0.02	983	0.02	-0.27
ScreenConnect	921	0.02	911	0.02	1.03
ws-httpd	879	0.02	867	0.02	1.31
Caddy	859	0.02	794	0.01	8.11
Rumpus	838	0.02	834	0.02	0.41
PWS	818	0.02	754	0.01	8.41
GSYQ	806	0.02	937	0.02	-14.04
Bomgar	773	0.01	768	0.01	0.58
CHO	771	0.01	773	0.01	-0.33
Icecast	750	0.01	721	0.01	3.95
Web	727	0.01	759	0.01	-4.28
Oracle-Application-Server-11g	695	0.01	710	0.01	-2.18
ATS	691	0.01	725	0.01	-4.76
Cougar	674	0.01	687	0.01	-1.96
Nginx	617	0.01	589	0.01	4.68
Server	614	0.01	628	0.01	-2.30
Protected	608	0.01	591	0.01	2.80
*****************	596	0.01	586	0.01	1.63
GSHD	572	0.01	933	0.02	-38.74
thttpd	533	0.01	556	0.01	-4.20
WebServer	531	0.01	534	0.01	-0.63
WAF	521	0.01	512	0.01	1.69
EdgePrism	521	0.01	515	0.01	1.09
TWebAP	508	0.01	501	0.01	1.33
redir-httpd	499	0.01	502	0.01	-0.67
httpd	496	0.01	505	0.01	-1.85
WowzaStreamingEngine	492	0.01	481	0.01	2.21
CommuniGatePro	491	0.01	494	0.01	-0.68
Oracle	481	0.01	476	0.01	0.98
Boa	481	0.01	485	0.01	-0.89
VWebServer	466	0.01	457	0.01	1.90
yunjiasu-nginx	450	0.01	461	0.01	-2.45
Sun	448	0.01	455	0.01	-1.61
Pagely	430	0.01	415	0.01	3.54
1	416	0.01	419	0.01	-0.79
SonicWALL	409	0.01	414	0.01	-1.28
QRATOR	401	0.01	405	0.01	-1.06
AliyunOSS	392	0.01	348	0.01	12.56
Footprint	391	0.01	384	0.01	1.75
cc-web	388	0.01	386	0.01	0.45
Zeus	383	0.01	387	0.01	-1.10
Sun-ONE-Web-Server	381	0.01	394	0.01	-3.37
Oracle-iPlanet-Web-Server	377	0.01	379	0.01	-0.60
WildFly	375	0.01	374	0.01	0.20
LRBD-8f8ba53	365	0.01	0	0.00	N/A
360wzws	357	0.01	289	0.01	23.44
Google	355	0.01	358	0.01	-0.91
Unknown	351	0.01	348	0.01	0.79
ghs	345	0.01	357	0.01	-3.43
Werkzeug	344	0.01	339	0.01	1.40
gunicorn	331	0.01	320	0.01	3.36
XtendWeb-nginx	330	0.01	1,013	0.02	-67.45
Abyss	327	0.01	331	0.01	-1.28
Cherokee	320	0.01	327	0.01	-2.21
awselb	312	0.01	0	0.00	N/A
NginxPlus	309	0.01	296	0.01	4.32
smartcds	292	0.01	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.