You are viewing an outdated report.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) 55,913,658 hostnames, but only 4,915,711 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	March 2019 Count	March 2019 %	February 2019 Count	February 2019 %	Growth %
Apache	2,189,511	44.54	2,181,916	45.11	-1.27
nginx	1,035,395	21.06	1,010,066	20.88	0.86
Microsoft-IIS	649,676	13.22	633,830	13.10	0.85
null	309,808	6.30	303,749	6.28	0.35
Microsoft-HTTPAPI	259,562	5.28	245,323	5.07	4.10
cloudflare	113,855	2.32	109,827	2.27	2.00
LiteSpeed	47,510	0.97	46,811	0.97	-0.14
IdeaWebServer	45,527	0.93	45,635	0.94	-1.84
BigIP	29,354	0.60	29,243	0.60	-1.24
Apache-Coyote	28,280	0.58	27,586	0.57	0.87
openresty	23,369	0.48	22,872	0.47	0.53
AkamaiGHost	16,263	0.33	15,504	0.32	3.21
Tengine	13,284	0.27	12,885	0.27	1.44
Flywheel	13,174	0.27	13,107	0.27	-1.11
AmazonS3	8,355	0.17	8,290	0.17	-0.84
lighttpd	5,680	0.12	5,733	0.12	-2.52
wts	5,455	0.11	5,190	0.11	3.42
awselb	5,111	0.10	4,785	0.10	5.09
CloudFront	4,776	0.10	3,503	0.07	34.15
Varnish	4,376	0.09	4,471	0.09	-3.70
Lotus-Domino	3,639	0.07	3,650	0.08	-1.91
WWW	3,589	0.07	3,694	0.08	-4.41
nginx-reuseport	3,374	0.07	3,334	0.07	-0.43
Safedog	2,748	0.06	2,620	0.05	3.20
EZproxy	2,589	0.05	2,572	0.05	-0.96
kangle	2,519	0.05	2,192	0.05	13.07
Firewall	2,337	0.05	2,243	0.05	2.51
nginx-rc	2,300	0.05	2,203	0.05	2.72
squid	1,842	0.04	1,887	0.04	-3.95
Cowboy	1,816	0.04	1,924	0.04	-7.13
Caddy	1,595	0.03	1,568	0.03	0.09
ClausWeb-nginx	1,543	0.03	1,607	0.03	-5.53
IIS	1,429	0.03	1,450	0.03	-3.03
ws-httpd	1,156	0.02	1,153	0.02	-1.35
Resin	1,079	0.02	1,020	0.02	4.08
IceWarp	947	0.02	950	0.02	-1.92
-	915	0.02	915	0.02	-1.61
Linux	895	0.02	893	0.02	-1.39
WDaemon	890	0.02	890	0.02	-1.61
Zope	857	0.02	862	0.02	-2.18
YxlinkWAF	824	0.02	844	0.02	-3.94
Kestrel	814	0.02	914	0.02	-12.37
IBM_HTTP_Server	796	0.02	777	0.02	0.80
Destiny	796	0.02	799	0.02	-1.98
GlassFish	787	0.02	800	0.02	-3.21
CentOS	785	0.02	787	0.02	-1.86
scl	776	0.02	827	0.02	-7.68
III	776	0.02	818	0.02	-6.66
sffe	750	0.02	794	0.02	-7.06
ScreenConnect	707	0.01	717	0.01	-2.98
Server	705	0.01	656	0.01	5.74
Icecast	704	0.01	697	0.01	-0.62
VWebServer	699	0.01	661	0.01	4.05
CHO	691	0.01	695	0.01	-2.17
linuxOS	647	0.01	650	0.01	-2.06
Nginx	619	0.01	615	0.01	-0.97
Oracle-Application-Server-10g	615	0.01	631	0.01	-4.10
PWS	591	0.01	570	0.01	2.02
AliyunOSS	561	0.01	502	0.01	9.96
ECAcc	556	0.01	556	0.01	-1.61
Rumpus	518	0.01	525	0.01	-2.92
Web	517	0.01	498	0.01	2.15
WebServer	502	0.01	521	0.01	-5.20
redir-httpd	489	0.01	490	0.01	-1.81
ATS	484	0.01	478	0.01	-0.37
EdgePrism	459	0.01	456	0.01	-0.96
Protected	412	0.01	393	0.01	3.15
Oracle-Application-Server-11g	410	0.01	433	0.01	-6.83
OpenBSD	406	0.01	404	0.01	-1.12
QRATOR	396	0.01	398	0.01	-2.10
Bomgar	391	0.01	400	0.01	-3.82
CommuniGatePro	380	0.01	383	0.01	-2.38
WildFly	363	0.01	373	0.01	-4.25
*****************	362	0.01	359	0.01	-0.79
WAF	334	0.01	302	0.01	8.82
cc-web	329	0.01	325	0.01	-0.40
Cougar	327	0.01	333	0.01	-3.38
ECS	324	0.01	321	0.01	-0.69
aruba-proxy	322	0.01	316	0.01	0.26
httpd	320	0.01	330	0.01	-4.59
WowzaStreamingEngine	316	0.01	320	0.01	-2.84
LRBD-f684f74	316	0.01	0	0.00	N/A
web	314	0.01	0	0.00	N/A
MageStack-MagentoOS	313	0.01	312	0.01	-1.29
4D	301	0.01	290	0.01	2.12
Netscape-Enterprise	296	0.01	290	0.01	0.43
TWebAP	285	0.01	260	0.01	7.85
ghs	281	0.01	295	0.01	-6.28
Werkzeug	271	0.01	254	0.01	4.98
ngjit	270	0.01	269	0.01	-1.24
1	265	0.01	271	0.01	-3.79
Footprint	259	0.01	0	0.00	N/A
360wzws	258	0.01	244	0.01	4.04
SonicWALL	256	0.01	257	0.01	-1.99
bfe	255	0.01	0	0.00	N/A
long1	251	0.01	252	0.01	-2.00
awex	250	0.01	253	0.01	-2.78
gunicorn	246	0.01	250	0.01	-3.18
o2switch	245	0.00	243	0.01	-0.80
ECD	245	0.00	243	0.01	-0.80

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.