You are viewing an outdated report.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) 58,717,815 hostnames, but only 4,890,603 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	October 2018 Count	October 2018 %	September 2018 Count	September 2018 %	Growth %
Apache	2,247,893	45.96	2,263,302	46.18	-0.47
nginx	962,005	19.67	956,987	19.53	0.74
Microsoft-IIS	675,308	13.81	676,577	13.80	0.03
null	318,010	6.50	317,398	6.48	0.41
Microsoft-HTTPAPI	228,322	4.67	226,421	4.62	1.05
cloudflare-nginx	106,262	2.17	105,769	2.16	0.68
IdeaWebServer	46,809	0.96	46,964	0.96	-0.12
LiteSpeed	40,997	0.84	40,593	0.83	1.21
Apache-Coyote	30,851	0.63	31,525	0.64	-1.93
BigIP	28,250	0.58	27,978	0.57	1.19
openresty	26,098	0.53	25,227	0.51	3.67
AkamaiGHost	14,223	0.29	15,594	0.32	-8.60
Flywheel	12,669	0.26	12,565	0.26	1.04
Tengine	12,394	0.25	12,447	0.25	-0.21
AmazonS3	6,868	0.14	6,837	0.14	0.67
lighttpd	6,155	0.13	6,250	0.13	-1.31
wts	5,694	0.12	5,535	0.11	3.09
CloudFront	4,916	0.10	5,004	0.10	-1.55
WWW	4,437	0.09	4,830	0.10	-7.94
Varnish	4,260	0.09	4,281	0.09	-0.28
Lotus-Domino	3,871	0.08	3,943	0.08	-1.62
Safedog	3,436	0.07	3,422	0.07	0.62
nginx-reuseport	3,128	0.06	3,106	0.06	0.92
EZproxy	2,617	0.05	2,643	0.05	-0.77
Cowboy	2,132	0.04	2,240	0.05	-4.62
awselb	2,111	0.04	1,714	0.03	23.42
squid	2,052	0.04	2,087	0.04	-1.47
kangle	2,028	0.04	2,098	0.04	-3.13
IIS	1,749	0.04	1,808	0.04	-3.06
nginx-rc	1,593	0.03	1,436	0.03	11.17
Caddy	1,525	0.03	1,499	0.03	1.95
ClausWeb-nginx	1,397	0.03	1,439	0.03	-2.71
Firewall	1,289	0.03	1,249	0.03	3.42
Resin	1,128	0.02	1,154	0.02	-2.04
ws-httpd	1,119	0.02	1,107	0.02	1.30
YxlinkWAF	1,087	0.02	1,111	0.02	-1.95
linuxOS	986	0.02	1,849	0.04	-46.56
IceWarp	981	0.02	982	0.02	0.11
Zope	952	0.02	966	0.02	-1.24
-	931	0.02	906	0.02	2.98
WDaemon	924	0.02	936	0.02	-1.07
III	889	0.02	892	0.02	-0.12
Linux	875	0.02	0	0.00	N/A
IBM_HTTP_Server	873	0.02	947	0.02	-7.62
GlassFish	847	0.02	866	0.02	-1.99
scl	786	0.02	778	0.02	1.24
Destiny	769	0.02	763	0.02	1.00
ScreenConnect	761	0.02	768	0.02	-0.70
sffe	726	0.01	697	0.01	4.38
PWS	722	0.01	769	0.02	-5.91
Kestrel	711	0.01	662	0.01	7.63
CHO	709	0.01	712	0.01	-0.21
CentOS	696	0.01	659	0.01	5.84
Oracle-Application-Server-10g	687	0.01	723	0.01	-4.78
Icecast	671	0.01	675	0.01	-0.38
VWebServer	655	0.01	642	0.01	2.24
Server	623	0.01	621	0.01	0.54
Nginx	602	0.01	841	0.02	-28.27
Rumpus	566	0.01	574	0.01	-1.18
Protected	561	0.01	587	0.01	-4.23
Web	553	0.01	541	0.01	2.44
ECAcc	545	0.01	537	0.01	1.71
WebServer	541	0.01	552	0.01	-1.78
AliyunOSS	515	0.01	549	0.01	-5.99
nginx-upupw	513	0.01	473	0.01	8.69
ATS	506	0.01	487	0.01	4.12
yunjiasu-nginx	498	0.01	498	0.01	0.21
redir-httpd	491	0.01	491	0.01	0.21
Bomgar	478	0.01	494	0.01	-3.03
Oracle-Application-Server-11g	475	0.01	491	0.01	-3.05
EdgePrism	438	0.01	377	0.01	16.43
*****************	414	0.01	426	0.01	-2.61
QRATOR	406	0.01	401	0.01	1.46
CommuniGatePro	403	0.01	406	0.01	-0.53
OpenBSD	380	0.01	381	0.01	-0.05
Cougar	374	0.01	382	0.01	-1.89
WildFly	372	0.01	385	0.01	-3.17
httpd	367	0.01	377	0.01	-2.45
WAF	360	0.01	371	0.01	-2.76
WowzaStreamingEngine	347	0.01	339	0.01	2.58
cc-web	325	0.01	323	0.01	0.83
ECS	324	0.01	322	0.01	0.84
LRBD-90b4cdf	322	0.01	321	0.01	0.53
MageStack-MagentoOS	311	0.01	307	0.01	1.52
Werkzeug	303	0.01	294	0.01	3.28
TWebAP	297	0.01	301	0.01	-1.12
ghs	289	0.01	285	0.01	1.62
1	286	0.01	291	0.01	-1.51
LTMP	280	0.01	270	0.01	3.92
4D	280	0.01	280	0.01	0.21
aruba-proxy	273	0.01	267	0.01	2.47
Sun	273	0.01	283	0.01	-3.33
gunicorn	271	0.01	263	0.01	3.26
XtendWeb-nginx	271	0.01	281	0.01	-3.35
360wzws	270	0.01	265	0.01	2.10
SonicWALL	264	0.01	269	0.01	-1.65
Footprint	259	0.01	284	0.01	-8.61
Netscape-Enterprise	258	0.01	257	0.01	0.60
ECD	256	0.01	0	0.00	N/A
awex	252	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.