You are viewing an outdated report.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) 62,088,930 hostnames, but only 4,933,236 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	May 2018 Count	May 2018 %	April 2018 Count	April 2018 %	Growth %
Apache	2,327,489	47.18	2,351,353	47.36	-0.38
nginx	926,379	18.78	925,215	18.64	0.77
Microsoft-IIS	693,360	14.05	697,240	14.04	0.08
null	329,618	6.68	335,872	6.77	-1.24
Microsoft-HTTPAPI	218,470	4.43	219,178	4.41	0.31
cloudflare-nginx	92,651	1.88	91,155	1.84	2.29
IdeaWebServer	48,193	0.98	48,549	0.98	-0.10
LiteSpeed	41,418	0.84	40,819	0.82	2.12
Apache-Coyote	33,078	0.67	34,275	0.69	-2.88
BigIP	26,356	0.53	26,029	0.52	1.90
openresty	18,235	0.37	18,108	0.36	1.34
AkamaiGHost	14,467	0.29	13,328	0.27	9.24
Flywheel	11,557	0.23	11,237	0.23	3.50
Tengine	9,639	0.20	9,751	0.20	-0.52
lighttpd	6,691	0.14	6,811	0.14	-1.13
CloudFront	6,445	0.13	4,572	0.09	41.87
AmazonS3	5,724	0.12	5,690	0.11	1.24
wts	5,471	0.11	5,531	0.11	-0.45
WWW	4,721	0.10	4,822	0.10	-1.47
Varnish	4,284	0.09	4,321	0.09	-0.22
Lotus-Domino	4,168	0.08	4,221	0.09	-0.63
Safedog	3,855	0.08	4,492	0.09	-13.63
nginx-reuseport	2,887	0.06	2,837	0.06	2.41
EZproxy	2,695	0.05	2,710	0.05	0.08
Cowboy	2,423	0.05	2,507	0.05	-2.73
IIS	2,329	0.05	2,522	0.05	-7.06
squid	2,247	0.05	2,855	0.06	-20.79
kangle	2,079	0.04	2,146	0.04	-2.50
linuxOS	1,854	0.04	1,900	0.04	-1.80
XtendWeb-nginx	1,543	0.03	1,602	0.03	-3.07
Caddy	1,324	0.03	1,214	0.02	9.76
Resin	1,170	0.02	1,206	0.02	-2.37
YxlinkWAF	1,106	0.02	1,133	0.02	-1.76
nginx-upupw	1,058	0.02	687	0.01	54.99
Zope	1,049	0.02	1,089	0.02	-3.06
IBM_HTTP_Server	1,033	0.02	1,075	0.02	-3.29
IceWarp	1,028	0.02	1,039	0.02	-0.43
WDaemon	980	0.02	984	0.02	0.23
ws-httpd	969	0.02	944	0.02	3.30
-	947	0.02	983	0.02	-3.05
III	927	0.02	927	0.02	0.64
GlassFish	913	0.02	935	0.02	-1.73
sffe	826	0.02	823	0.02	1.01
ScreenConnect	811	0.02	814	0.02	0.27
Oracle-Application-Server-10g	784	0.02	787	0.02	0.25
PWS	751	0.02	776	0.02	-2.60
xServers	736	0.01	718	0.01	3.16
CHO	735	0.01	747	0.02	-0.98
nginx-rc	733	0.01	624	0.01	18.22
awselb	724	0.01	698	0.01	4.39
Destiny	704	0.01	718	0.01	-1.32
Bomgar	689	0.01	690	0.01	0.49
Web	672	0.01	684	0.01	-1.13
Icecast	663	0.01	654	0.01	2.02
Server	620	0.01	637	0.01	-2.05
Rumpus	600	0.01	616	0.01	-1.98
Nginx	596	0.01	620	0.01	-3.26
Protected	589	0.01	614	0.01	-3.46
VWebServer	580	0.01	582	0.01	0.29
www.25820.cn	553	0.01	307	0.01	81.28
ATS	533	0.01	527	0.01	1.78
Oracle-Application-Server-11g	527	0.01	535	0.01	-0.87
WebServer	524	0.01	525	0.01	0.45
CentOS	518	0.01	469	0.01	11.15
ECAcc	499	0.01	476	0.01	5.50
redir-httpd	494	0.01	494	0.01	0.64
yunjiasu-nginx	480	0.01	491	0.01	-1.62
EdgePrism	474	0.01	411	0.01	16.06
Kestrel	429	0.01	496	0.01	-12.96
CommuniGatePro	422	0.01	421	0.01	0.88
Cougar	417	0.01	424	0.01	-1.02
AliyunOSS	413	0.01	444	0.01	-6.39
*****************	410	0.01	447	0.01	-7.69
QRATOR	399	0.01	400	0.01	0.39
httpd	394	0.01	404	0.01	-1.85
WAF	391	0.01	404	0.01	-2.60
WildFly	386	0.01	386	0.01	0.64
Pagely	382	0.01	397	0.01	-3.16
WowzaStreamingEngine	359	0.01	367	0.01	-1.56
OpenBSD	357	0.01	345	0.01	4.14
ECS	331	0.01	333	0.01	0.03
LRBD-5c88d80	325	0.01	0	0.00	N/A
Footprint	322	0.01	326	0.01	-0.60
cc-web	321	0.01	317	0.01	1.91
1	313	0.01	318	0.01	-0.94
Werkzeug	312	0.01	314	0.01	-0.00
TWebAP	304	0.01	326	0.01	-6.15
Sun	302	0.01	305	0.01	-0.35
MageStack-MagentoOS	299	0.01	300	0.01	0.30
ghs	296	0.01	288	0.01	3.43
Pantheon	290	0.01	328	0.01	-11.02
Google	290	0.01	290	0.01	0.64
gunicorn	288	0.01	281	0.01	3.15
Netscape-Enterprise	282	0.01	277	0.01	2.46
Sun-ONE-Web-Server	280	0.01	288	0.01	-2.16
Oracle	278	0.01	278	0.01	0.64
360wzws	277	0.01	263	0.01	6.00
Oracle-iPlanet-Web-Server	276	0.01	281	0.01	-1.15
SonicWALL	271	0.01	283	0.01	-3.63
Abyss	264	0.01	268	0.01	-0.86

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.