You are viewing an outdated report. The latest version of this report was published on April 1st, 2025

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) 57,064,624 hostnames, but only 4,860,382 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	December 2018 Count	December 2018 %	November 2018 Count	November 2018 %	Growth %
Apache	2,223,097	45.74	2,233,671	45.89	-0.33
nginx	985,922	20.28	979,326	20.12	0.81
Microsoft-IIS	642,884	13.23	649,810	13.35	-0.93
null	312,332	6.43	313,934	6.45	-0.37
Microsoft-HTTPAPI	235,449	4.84	232,339	4.77	1.48
cloudflare	110,375	2.27	106,979	2.20	3.32
IdeaWebServer	46,259	0.95	46,494	0.96	-0.37
LiteSpeed	42,435	0.87	42,000	0.86	1.18
Apache-Coyote	29,640	0.61	30,155	0.62	-1.57
BigIP	28,912	0.59	28,779	0.59	0.60
openresty	23,268	0.48	22,545	0.46	3.35
AkamaiGHost	14,479	0.30	14,416	0.30	0.58
Flywheel	12,943	0.27	12,877	0.26	0.65
Tengine	12,688	0.26	13,202	0.27	-3.76
AmazonS3	7,626	0.16	7,559	0.16	1.03
lighttpd	5,940	0.12	6,020	0.12	-1.19
wts	5,566	0.11	5,582	0.11	-0.15
Varnish	4,323	0.09	4,347	0.09	-0.41
CloudFront	3,940	0.08	3,613	0.07	9.20
WWW	3,921	0.08	4,476	0.09	-12.28
Lotus-Domino	3,806	0.08	3,825	0.08	-0.36
awselb	3,365	0.07	2,950	0.06	14.23
nginx-reuseport	3,204	0.07	3,169	0.07	1.25
Safedog	3,091	0.06	3,453	0.07	-10.36
EZproxy	2,602	0.05	2,600	0.05	0.22
kangle	2,176	0.04	2,586	0.05	-15.74
squid	1,978	0.04	1,989	0.04	-0.41
Cowboy	1,964	0.04	2,018	0.04	-2.54
nginx-rc	1,847	0.04	1,757	0.04	5.27
IIS	1,665	0.03	1,695	0.03	-1.63
ClausWeb-nginx	1,600	0.03	1,607	0.03	-0.30
Caddy	1,519	0.03	1,516	0.03	0.34
Firewall	1,463	0.03	1,329	0.03	10.24
ws-httpd	1,118	0.02	1,119	0.02	0.05
Resin	1,093	0.02	1,109	0.02	-1.30
-	985	0.02	998	0.02	-1.16
YxlinkWAF	973	0.02	968	0.02	0.66
IceWarp	965	0.02	969	0.02	-0.27
Linux	943	0.02	849	0.02	11.23
Zope	911	0.02	921	0.02	-0.95
WDaemon	910	0.02	915	0.02	-0.41
linuxOS	887	0.02	1,002	0.02	-11.35
III	854	0.02	873	0.02	-2.04
IBM_HTTP_Server	846	0.02	862	0.02	-1.72
GlassFish	836	0.02	835	0.02	0.26
scl	791	0.02	787	0.02	0.65
Destiny	772	0.02	779	0.02	-0.76
Kestrel	747	0.02	784	0.02	-4.59
ScreenConnect	740	0.02	746	0.02	-0.66
sffe	721	0.01	680	0.01	6.18
CHO	700	0.01	707	0.01	-0.85
VWebServer	691	0.01	673	0.01	2.82
CentOS	690	0.01	752	0.02	-8.12
Icecast	673	0.01	679	0.01	-0.74
Oracle-Application-Server-10g	654	0.01	656	0.01	-0.16
Server	641	0.01	629	0.01	2.05
PWS	631	0.01	648	0.01	-2.49
Nginx	617	0.01	617	0.01	0.14
Web	563	0.01	564	0.01	-0.04
ECAcc	558	0.01	554	0.01	0.86
AliyunOSS	547	0.01	545	0.01	0.51
WebServer	542	0.01	509	0.01	6.63
Rumpus	540	0.01	542	0.01	-0.23
Protected	523	0.01	519	0.01	0.91
yunjiasu-nginx	520	0.01	511	0.01	1.90
redir-httpd	490	0.01	491	0.01	-0.06
ATS	472	0.01	485	0.01	-2.54
EdgePrism	463	0.01	461	0.01	0.57
Oracle-Application-Server-11g	457	0.01	457	0.01	0.14
Bomgar	429	0.01	448	0.01	-4.11
*****************	398	0.01	393	0.01	1.41
QRATOR	397	0.01	396	0.01	0.39
CommuniGatePro	395	0.01	401	0.01	-1.36
OpenBSD	390	0.01	380	0.01	2.78
WildFly	372	0.01	377	0.01	-1.19
httpd	358	0.01	354	0.01	1.27
Cougar	354	0.01	359	0.01	-1.25
WAF	349	0.01	342	0.01	2.19
nginx-upupw	346	0.01	338	0.01	2.51
cc-web	332	0.01	332	0.01	0.14
WowzaStreamingEngine	326	0.01	339	0.01	-3.70
ECS	318	0.01	327	0.01	-2.62
LRBD-90b4cdf	317	0.01	282	0.01	12.57
XtendWeb-nginx	314	0.01	317	0.01	-0.81
MageStack-MagentoOS	313	0.01	316	0.01	-0.81
aruba-proxy	296	0.01	289	0.01	2.57
TWebAP	296	0.01	299	0.01	-0.86
4D	291	0.01	287	0.01	1.54
ghs	288	0.01	284	0.01	1.55
Footprint	283	0.01	274	0.01	3.43
Werkzeug	282	0.01	279	0.01	1.22
Netscape-Enterprise	278	0.01	265	0.01	5.05
1	274	0.01	280	0.01	-2.01
360wzws	269	0.01	281	0.01	-4.14
gunicorn	263	0.01	264	0.01	-0.24
WCSFlare	263	0.01	301	0.01	-12.50
SonicWALL	260	0.01	265	0.01	-1.75
Sun	259	0.01	267	0.01	-2.86
awex	253	0.01	254	0.01	-0.25
shield	248	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.