You are viewing an outdated report.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) 59,495,286 hostnames, but only 4,901,022 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	September 2018 Count	September 2018 %	August 2018 Count	August 2018 %	Growth %
Apache	2,263,302	46.18	2,276,106	46.31	-0.27
nginx	956,987	19.53	947,530	19.28	1.30
Microsoft-IIS	676,577	13.80	689,205	14.02	-1.54
null	317,398	6.48	322,843	6.57	-1.40
Microsoft-HTTPAPI	226,421	4.62	225,480	4.59	0.71
cloudflare-nginx	105,769	2.16	104,939	2.13	1.09
IdeaWebServer	46,964	0.96	47,361	0.96	-0.55
LiteSpeed	40,593	0.83	40,514	0.82	0.49
Apache-Coyote	31,525	0.64	31,988	0.65	-1.16
BigIP	27,978	0.57	27,552	0.56	1.84
openresty	25,227	0.51	23,930	0.49	5.73
AkamaiGHost	15,594	0.32	13,141	0.27	19.02
Flywheel	12,565	0.26	12,299	0.25	2.46
Tengine	12,447	0.25	11,495	0.23	8.60
AmazonS3	6,837	0.14	6,578	0.13	4.24
lighttpd	6,250	0.13	6,323	0.13	-0.86
wts	5,535	0.11	5,385	0.11	3.09
CloudFront	5,004	0.10	4,770	0.10	5.21
WWW	4,830	0.10	5,209	0.11	-7.00
Varnish	4,281	0.09	4,211	0.09	1.96
Lotus-Domino	3,943	0.08	3,986	0.08	-0.79
Safedog	3,422	0.07	3,162	0.06	8.54
nginx-reuseport	3,106	0.06	3,059	0.06	1.84
EZproxy	2,643	0.05	2,636	0.05	0.56
Cowboy	2,240	0.05	2,210	0.04	1.66
kangle	2,098	0.04	2,252	0.05	-6.56
squid	2,087	0.04	2,128	0.04	-1.64
linuxOS	1,849	0.04	1,789	0.04	3.66
IIS	1,808	0.04	1,796	0.04	0.96
awselb	1,714	0.03	1,309	0.03	31.32
Caddy	1,499	0.03	1,434	0.03	4.84
ClausWeb-nginx	1,439	0.03	1,414	0.03	2.07
nginx-rc	1,436	0.03	1,187	0.02	21.33
Firewall	1,249	0.03	1,181	0.02	6.07
Resin	1,154	0.02	1,157	0.02	0.03
YxlinkWAF	1,111	0.02	1,148	0.02	-2.94
ws-httpd	1,107	0.02	1,086	0.02	2.23
IceWarp	982	0.02	1,013	0.02	-2.77
Zope	966	0.02	982	0.02	-1.34
IBM_HTTP_Server	947	0.02	965	0.02	-1.58
WDaemon	936	0.02	954	0.02	-1.60
-	906	0.02	894	0.02	1.64
III	892	0.02	903	0.02	-0.93
GlassFish	866	0.02	876	0.02	-0.85
Nginx	841	0.02	590	0.01	42.96
scl	778	0.02	754	0.02	3.49
PWS	769	0.02	707	0.01	9.09
ScreenConnect	768	0.02	769	0.02	0.16
Destiny	763	0.02	738	0.02	3.69
Oracle-Application-Server-10g	723	0.01	742	0.02	-2.27
CHO	712	0.01	721	0.01	-0.96
sffe	697	0.01	727	0.01	-3.84
Icecast	675	0.01	667	0.01	1.50
Kestrel	662	0.01	590	0.01	12.53
CentOS	659	0.01	614	0.01	7.64
VWebServer	642	0.01	628	0.01	2.53
Server	621	0.01	598	0.01	4.15
Protected	587	0.01	587	0.01	0.29
Rumpus	574	0.01	573	0.01	0.47
WebServer	552	0.01	543	0.01	1.96
AliyunOSS	549	0.01	503	0.01	9.47
Web	541	0.01	539	0.01	0.67
ECAcc	537	0.01	541	0.01	-0.45
yunjiasu-nginx	498	0.01	511	0.01	-2.26
Bomgar	494	0.01	524	0.01	-5.45
redir-httpd	491	0.01	494	0.01	-0.31
Oracle-Application-Server-11g	491	0.01	492	0.01	0.09
ATS	487	0.01	484	0.01	0.92
nginx-upupw	473	0.01	553	0.01	-14.21
*****************	426	0.01	427	0.01	0.06
CommuniGatePro	406	0.01	413	0.01	-1.41
QRATOR	401	0.01	395	0.01	1.82
WildFly	385	0.01	374	0.01	3.24
Cougar	382	0.01	394	0.01	-2.76
OpenBSD	381	0.01	377	0.01	1.36
httpd	377	0.01	386	0.01	-2.04
EdgePrism	377	0.01	413	0.01	-8.45
WAF	371	0.01	329	0.01	13.10
WowzaStreamingEngine	339	0.01	346	0.01	-1.73
cc-web	323	0.01	326	0.01	-0.63
ECS	322	0.01	327	0.01	-1.24
LRBD-90b4cdf	321	0.01	309	0.01	4.19
MageStack-MagentoOS	307	0.01	300	0.01	2.63
TWebAP	301	0.01	311	0.01	-2.93
Werkzeug	294	0.01	300	0.01	-1.71
1	291	0.01	301	0.01	-3.04
ghs	285	0.01	283	0.01	1.00
******	285	0.01	273	0.01	4.70
Footprint	284	0.01	294	0.01	-3.12
Sun	283	0.01	295	0.01	-3.79
xServers	281	0.01	714	0.01	-60.53
XtendWeb-nginx	281	0.01	314	0.01	-10.25
4D	280	0.01	279	0.01	0.65
LTMP	270	0.01	261	0.01	3.75
SonicWALL	269	0.01	262	0.01	2.97
aruba-proxy	267	0.01	259	0.01	3.39
360wzws	265	0.01	292	0.01	-8.98
gunicorn	263	0.01	275	0.01	-4.08
Abyss	258	0.01	0	0.00	N/A
Netscape-Enterprise	257	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.