You are viewing an outdated report. The latest version of this report was published on September 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) 76,829,923 hostnames, but only 5,274,744 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	February 2017 Count	February 2017 %	January 2017 Count	January 2017 %	Growth %
Apache	2,515,521	47.69	2,504,901	48.08	-0.82
Microsoft-IIS	850,270	16.12	831,055	15.95	1.05
nginx	848,654	16.09	831,423	15.96	0.81
null	382,372	7.25	375,259	7.20	0.63
Microsoft-HTTPAPI	210,603	3.99	206,197	3.96	0.87
cloudflare-nginx	80,095	1.52	78,787	1.51	0.40
Apache-Coyote	53,702	1.02	54,079	1.04	-1.93
IdeaWebServer	50,267	0.95	50,035	0.96	-0.78
LiteSpeed	37,421	0.71	36,422	0.70	1.47
BigIP	21,628	0.41	21,160	0.41	0.95
openresty	14,690	0.28	14,182	0.27	2.30
AkamaiGHost	14,197	0.27	12,419	0.24	12.90
lighttpd	9,094	0.17	9,372	0.18	-4.17
WWW	8,115	0.15	7,409	0.14	8.17
Tengine	7,627	0.14	7,431	0.14	1.37
IIS	7,463	0.14	7,632	0.15	-3.42
Flywheel	7,332	0.14	6,835	0.13	5.94
squid	6,223	0.12	6,437	0.12	-4.52
A	6,145	0.12	6,197	0.12	-2.07
Lotus-Domino	5,444	0.10	5,531	0.11	-2.79
wts	5,378	0.10	5,239	0.10	1.38
Safedog	5,155	0.10	5,901	0.11	-13.72
Varnish	4,382	0.08	4,233	0.08	2.24
Cowboy	4,200	0.08	4,375	0.08	-5.19
kangle	3,491	0.07	3,304	0.06	4.35
AmazonS3	3,366	0.06	3,482	0.07	-4.53
CloudFront	3,345	0.06	2,829	0.05	16.78
sffe	3,161	0.06	3,239	0.06	-3.62
EZproxy	2,726	0.05	2,676	0.05	0.61
Resin	1,959	0.04	1,942	0.04	-0.37
nginx-reuseport	1,909	0.04	1,822	0.03	3.48
IBM_HTTP_Server	1,822	0.03	1,897	0.04	-5.14
Pantheon	1,768	0.03	1,644	0.03	6.21
Zope	1,762	0.03	1,762	0.03	-1.24
Destiny	1,727	0.03	1,726	0.03	-1.18
-	1,415	0.03	1,463	0.03	-4.48
YxlinkWAF	1,395	0.03	1,217	0.02	13.21
GSYQ	1,346	0.03	1,592	0.03	-16.50
WDaemon	1,299	0.02	1,310	0.03	-2.07
IceWarp	1,157	0.02	1,158	0.02	-1.32
Oracle-Application-Server-10g	1,148	0.02	1,160	0.02	-2.26
GlassFish	1,136	0.02	1,152	0.02	-2.61
GSHD	1,121	0.02	898	0.02	23.29
III	1,060	0.02	1,059	0.02	-1.14
xServers	981	0.02	965	0.02	0.40
ScreenConnect	915	0.02	897	0.02	0.74
Rumpus	841	0.02	842	0.02	-1.35
ws-httpd	819	0.02	795	0.02	1.74
CHO	792	0.02	782	0.02	0.03
Bomgar	785	0.01	784	0.02	-1.11
Protected	782	0.01	662	0.01	16.66
ATS	777	0.01	807	0.02	-4.91
Cougar	769	0.01	781	0.01	-2.76
Oracle-Application-Server-11g	742	0.01	735	0.01	-0.30
Web	701	0.01	738	0.01	-6.19
Icecast	688	0.01	677	0.01	0.37
WAF	684	0.01	675	0.01	0.08
PWS	654	0.01	742	0.01	-12.95
Caddy	608	0.01	536	0.01	12.03
Server	586	0.01	574	0.01	0.83
WebServer	583	0.01	610	0.01	-5.61
thttpd	569	0.01	588	0.01	-4.43
TWebAP	551	0.01	526	0.01	3.46
kisa	547	0.01	543	0.01	-0.51
*****************	536	0.01	547	0.01	-3.22
LRBD-27f7b30	535	0.01	0	0.00	N/A
httpd	523	0.01	526	0.01	-1.80
Oracle	519	0.01	524	0.01	-2.18
Boa	519	0.01	518	0.01	-1.05
CommuniGatePro	512	0.01	520	0.01	-2.76
EdgePrism	510	0.01	473	0.01	6.49
redir-httpd	499	0.01	499	0.01	-1.24
Nginx	480	0.01	438	0.01	8.23
WowzaStreamingEngine	472	0.01	450	0.01	3.59
Sun	462	0.01	462	0.01	-1.24
Sun-ONE-Web-Server	434	0.01	450	0.01	-4.75
1	417	0.01	419	0.01	-1.71
Nginx-VPSSIM	415	0.01	442	0.01	-7.27
SonicWALL	414	0.01	416	0.01	-1.71
Oracle-iPlanet-Web-Server	413	0.01	422	0.01	-3.34
Zeus	411	0.01	405	0.01	0.23
VWebServer	410	0.01	407	0.01	-0.51
QRATOR	402	0.01	409	0.01	-2.93
Pagely	381	0.01	0	0.00	N/A
Google	363	0.01	373	0.01	-3.89
cc-web	360	0.01	357	0.01	-0.41
Footprint	355	0.01	337	0.01	4.04
Unknown	349	0.01	355	0.01	-2.91
Cherokee	349	0.01	364	0.01	-5.31
ghs	339	0.01	345	0.01	-2.96
Abyss	336	0.01	318	0.01	4.35
gunicorn	331	0.01	335	0.01	-2.42
Black	329	0.01	363	0.01	-10.49
WildFly	323	0.01	312	0.01	2.24
yunjiasu-nginx	322	0.01	317	0.01	0.32
XtendWeb-nginx	322	0.01	0	0.00	N/A
AliyunOSS	305	0.01	288	0.01	4.59
NginxPlus	301	0.01	0	0.00	N/A
Werkzeug	295	0.01	299	0.01	-2.56
SAP	290	0.01	292	0.01	-1.91

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.