You are viewing an outdated report. The latest version of this report was published on October 1st, 2024

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) 61,786,262 hostnames, but only 4,964,736 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 2018 Count	April 2018 %	March 2018 Count	March 2018 %	Growth %
Apache	2,351,353	47.36	2,397,866	47.83	-0.98
nginx	925,215	18.64	925,059	18.45	0.99
Microsoft-IIS	697,240	14.04	692,973	13.82	1.60
null	335,872	6.77	336,350	6.71	0.83
Microsoft-HTTPAPI	219,178	4.41	221,217	4.41	0.04
cloudflare-nginx	91,155	1.84	90,846	1.81	1.32
IdeaWebServer	48,549	0.98	48,857	0.97	0.34
LiteSpeed	40,819	0.82	40,404	0.81	2.01
Apache-Coyote	34,275	0.69	35,141	0.70	-1.51
BigIP	26,029	0.52	25,790	0.51	1.91
openresty	18,108	0.36	18,194	0.36	0.50
AkamaiGHost	13,328	0.27	14,106	0.28	-4.59
Flywheel	11,237	0.23	10,973	0.22	3.40
Tengine	9,751	0.20	9,497	0.19	3.68
lighttpd	6,811	0.14	6,971	0.14	-1.34
AmazonS3	5,690	0.11	5,685	0.11	1.06
wts	5,531	0.11	5,570	0.11	0.27
WWW	4,822	0.10	5,080	0.10	-4.15
CloudFront	4,572	0.09	5,684	0.11	-18.78
Safedog	4,492	0.09	4,766	0.10	-4.83
Varnish	4,321	0.09	4,365	0.09	-0.04
Lotus-Domino	4,221	0.09	4,331	0.09	-1.59
squid	2,855	0.06	2,948	0.06	-2.21
nginx-reuseport	2,837	0.06	2,770	0.06	3.42
EZproxy	2,710	0.05	2,724	0.05	0.46
IIS	2,522	0.05	2,721	0.05	-6.41
Cowboy	2,507	0.05	2,569	0.05	-1.46
kangle	2,146	0.04	2,382	0.05	-9.03
linuxOS	1,900	0.04	1,048	0.02	83.06
XtendWeb-nginx	1,602	0.03	1,597	0.03	1.29
Caddy	1,214	0.02	1,214	0.02	0.97
Resin	1,206	0.02	1,228	0.02	-0.83
YxlinkWAF	1,133	0.02	1,154	0.02	-0.86
Zope	1,089	0.02	1,123	0.02	-2.08
IBM_HTTP_Server	1,075	0.02	1,109	0.02	-2.12
IceWarp	1,039	0.02	1,046	0.02	0.30
WDaemon	984	0.02	1,003	0.02	-0.94
-	983	0.02	1,005	0.02	-1.24
ws-httpd	944	0.02	947	0.02	0.65
GlassFish	935	0.02	945	0.02	-0.09
III	927	0.02	937	0.02	-0.10
sffe	823	0.02	944	0.02	-11.97
ScreenConnect	814	0.02	832	0.02	-1.21
Oracle-Application-Server-10g	787	0.02	801	0.02	-0.79
PWS	776	0.02	848	0.02	-7.60
CHO	747	0.02	754	0.02	0.04
xServers	718	0.01	776	0.02	-6.57
Destiny	718	0.01	731	0.01	-0.82
awselb	698	0.01	600	0.01	17.47
Bomgar	690	0.01	705	0.01	-1.17
nginx-upupw	687	0.01	416	0.01	66.75
Web	684	0.01	673	0.01	2.63
Icecast	654	0.01	648	0.01	1.91
Server	637	0.01	636	0.01	1.13
nginx-rc	624	0.01	556	0.01	13.32
Nginx	620	0.01	659	0.01	-5.00
Rumpus	616	0.01	623	0.01	-0.16
Protected	614	0.01	561	0.01	10.51
VWebServer	582	0.01	573	0.01	2.56
Oracle-Application-Server-11g	535	0.01	545	0.01	-0.88
ATS	527	0.01	555	0.01	-4.12
WebServer	525	0.01	530	0.01	0.02
Kestrel	496	0.01	426	0.01	17.57
redir-httpd	494	0.01	494	0.01	0.97
yunjiasu-nginx	491	0.01	494	0.01	0.36
ECAcc	476	0.01	456	0.01	5.40
CentOS	469	0.01	484	0.01	-2.15
*****************	447	0.01	429	0.01	5.21
AliyunOSS	444	0.01	433	0.01	3.54
Cougar	424	0.01	436	0.01	-1.80
CommuniGatePro	421	0.01	430	0.01	-1.14
EdgePrism	411	0.01	429	0.01	-3.26
httpd	404	0.01	416	0.01	-1.94
WAF	404	0.01	425	0.01	-4.01
QRATOR	400	0.01	388	0.01	4.10
Pagely	397	0.01	408	0.01	-1.75
WildFly	386	0.01	394	0.01	-1.08
WowzaStreamingEngine	367	0.01	376	0.01	-1.44
GSHD	352	0.01	542	0.01	-34.42
OpenBSD	345	0.01	338	0.01	3.07
ECS	333	0.01	332	0.01	1.28
Pantheon	328	0.01	386	0.01	-14.20
TWebAP	326	0.01	338	0.01	-2.61
Footprint	326	0.01	279	0.01	17.98
1	318	0.01	324	0.01	-0.90
cc-web	317	0.01	319	0.01	0.34
Werkzeug	314	0.01	327	0.01	-3.04
www.25820.cn	307	0.01	544	0.01	-43.02
Sun	305	0.01	323	0.01	-4.65
MageStack-MagentoOS	300	0.01	296	0.01	2.34
Google	290	0.01	297	0.01	-1.41
ghs	288	0.01	316	0.01	-7.97
Sun-ONE-Web-Server	288	0.01	316	0.01	-7.97
SonicWALL	283	0.01	280	0.01	2.06
gunicorn	281	0.01	296	0.01	-4.14
Oracle-iPlanet-Web-Server	281	0.01	287	0.01	-1.14
Oracle	278	0.01	287	0.01	-2.19
Netscape-Enterprise	277	0.01	273	0.01	2.45
Abyss	268	0.01	278	0.01	-2.66
360wzws	263	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.