You are viewing an outdated report.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) 72,488,697 hostnames, but only 5,666,982 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 2016 Count	January 2016 %	December 2015 Count	December 2015 %	Growth %
Apache	2,970,495	52.42	3,003,510	52.40	0.04
Microsoft-IIS	899,950	15.88	917,044	16.00	-0.74
nginx	698,413	12.32	689,863	12.04	2.40
null	423,166	7.47	441,180	7.70	-2.98
Microsoft-HTTPAPI	198,725	3.51	198,332	3.46	1.35
cloudflare-nginx	67,990	1.20	65,464	1.14	5.05
Apache-Coyote	62,065	1.10	62,395	1.09	0.61
IdeaWebServer	53,726	0.95	57,240	1.00	-5.06
LiteSpeed	35,465	0.63	36,417	0.64	-1.50
IIS	20,524	0.36	20,337	0.35	2.08
BigIP	19,494	0.34	19,656	0.34	0.31
lighttpd	14,803	0.26	15,027	0.26	-0.36
AkamaiGHost	11,365	0.20	10,931	0.19	5.16
squid	10,507	0.19	11,146	0.19	-4.65
A	9,134	0.16	9,269	0.16	-0.33
Tengine	7,028	0.12	7,558	0.13	-5.94
Lotus-Domino	6,818	0.12	6,950	0.12	-0.77
Rapidsite	6,359	0.11	6,614	0.12	-2.75
WWW	5,990	0.11	5,523	0.10	9.70
Cowboy	5,617	0.10	5,665	0.10	0.29
GSHD	5,253	0.09	4,178	0.07	27.17
Safedog	5,163	0.09	4,714	0.08	10.78
sffe	4,956	0.09	4,729	0.08	6.00
Flywheel	4,326	0.08	4,096	0.07	6.83
Varnish	3,844	0.07	3,908	0.07	-0.51
kangle	3,152	0.06	3,018	0.05	5.64
IBM_HTTP_Server	2,828	0.05	2,928	0.05	-2.31
AmazonS3	2,624	0.05	3,394	0.06	-21.80
EZproxy	2,607	0.05	2,617	0.05	0.76
openresty	2,578	0.05	2,558	0.04	1.94
-	2,418	0.04	2,453	0.04	-0.30
Resin	2,395	0.04	2,445	0.04	-0.92
Zope	2,214	0.04	2,311	0.04	-3.10
CloudFront	1,709	0.03	2,495	0.04	-30.72
Oracle-Application-Server-10g	1,642	0.03	1,733	0.03	-4.16
WDaemon	1,506	0.03	1,568	0.03	-2.85
xServers	1,419	0.03	1,407	0.02	2.01
GlassFish	1,304	0.02	1,281	0.02	2.96
IceWarp	1,278	0.02	1,283	0.02	0.75
III	1,114	0.02	1,133	0.02	-0.55
Pantheon	1,068	0.02	1,042	0.02	3.67
Cougar	998	0.02	1,059	0.02	-4.68
Web	985	0.02	1,396	0.02	-28.63
Rumpus	965	0.02	941	0.02	3.73
Oracle-Application-Server-11g	873	0.02	942	0.02	-6.26
YxlinkWAF	842	0.01	786	0.01	8.35
CHO	829	0.01	836	0.01	0.30
Bomgar	821	0.01	823	0.01	0.90
ScreenConnect	801	0.01	780	0.01	3.87
Sun-ONE-Web-Server	786	0.01	818	0.01	-2.81
cpsrvd	744	0.01	966	0.02	-22.10
thttpd	725	0.01	750	0.01	-2.22
*****************	691	0.01	694	0.01	0.71
WebServer	689	0.01	752	0.01	-7.33
Advanced	689	0.01	707	0.01	-1.43
PWS	680	0.01	676	0.01	1.75
Boa	673	0.01	681	0.01	-0.04
ATS	672	0.01	739	0.01	-8.02
httpd	650	0.01	671	0.01	-2.02
Oracle	637	0.01	637	0.01	1.15
EdgePrism	621	0.01	615	0.01	2.13
Zeus	616	0.01	630	0.01	-1.10
XiakeWeb	612	0.01	605	0.01	2.32
NetBox	610	0.01	760	0.01	-18.82
CommuniGatePro	580	0.01	601	0.01	-2.39
Sun	571	0.01	593	0.01	-2.60
kisa	529	0.01	522	0.01	2.50
Cherokee	515	0.01	518	0.01	0.56
redir-httpd	506	0.01	506	0.01	1.15
Icecast	499	0.01	466	0.01	8.31
SonicWALL	484	0.01	485	0.01	0.94
Nginx-VPSSIM	478	0.01	410	0.01	17.92
Server	457	0.01	455	0.01	1.59
Oracle-iPlanet-Web-Server	456	0.01	476	0.01	-3.10
TWebAP	442	0.01	444	0.01	0.69
WowzaStreamingEngine	434	0.01	411	0.01	6.81
Netscape-Enterprise	434	0.01	444	0.01	-1.13
Apache-AdvancedExtranetServer	420	0.01	422	0.01	0.67
GWS	407	0.01	427	0.01	-3.59
Google	406	0.01	416	0.01	-1.28
gunicorn	389	0.01	393	0.01	0.12
Unknown	380	0.01	377	0.01	1.95
QRATOR	379	0.01	375	0.01	2.23
Abyss	375	0.01	393	0.01	-3.48
Jetty	364	0.01	379	0.01	-2.86
NginxPlus	362	0.01	355	0.01	3.14
yunjiasu-nginx	361	0.01	342	0.01	6.77
FlashCom	358	0.01	381	0.01	-4.96
ngx_openresty	357	0.01	372	0.01	-2.93
YUNDUN	356	0.01	0	0.00	N/A
Protected	355	0.01	333	0.01	7.83
cc-web	343	0.01	330	0.01	5.13
ghs	338	0.01	326	0.01	4.87
SAP	330	0.01	339	0.01	-1.54
WS	327	0.01	328	0.01	0.84
Sun-Java-System-Web-Server	312	0.01	332	0.01	-4.95
Black	298	0.01	0	0.00	N/A
unknown	293	0.01	304	0.01	-2.51
Footprint	291	0.01	0	0.00	N/A
WebServerX	283	0.00	299	0.01	-4.26

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.