You are viewing an outdated report.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) 60,020,203 hostnames, but only 5,258,248 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	November 2019 Count	November 2019 %	October 2019 Count	October 2019 %	Growth %
Apache	2,162,092	41.12	2,177,643	41.43	-0.74
nginx	1,179,997	22.44	1,177,230	22.39	0.21
Microsoft-IIS	728,609	13.86	731,282	13.91	-0.39
null	332,277	6.32	330,162	6.28	0.61
Microsoft-HTTPAPI	304,303	5.79	302,164	5.75	0.68
cloudflare	164,166	3.12	159,724	3.04	2.75
LiteSpeed	58,168	1.11	56,070	1.07	3.71
IdeaWebServer	43,639	0.83	43,736	0.83	-0.25
Tengine	34,414	0.65	34,392	0.65	0.04
BigIP	29,538	0.56	29,459	0.56	0.24
Apache-Coyote	26,889	0.51	27,109	0.52	-0.84
openresty	16,746	0.32	15,895	0.30	5.32
AkamaiGHost	16,391	0.31	14,736	0.28	11.20
awselb	11,458	0.22	10,715	0.20	6.90
AmazonS3	11,395	0.22	11,021	0.21	3.37
Flywheel	9,445	0.18	10,529	0.20	-10.32
Nginx	7,725	0.15	855	0.02	803.26
wts	5,302	0.10	5,457	0.10	-2.87
lighttpd	5,116	0.10	5,208	0.10	-1.79
CloudFront	4,866	0.09	6,329	0.12	-23.14
Varnish	4,166	0.08	4,285	0.08	-2.80
nginx-reuseport	3,946	0.08	3,899	0.07	1.18
nginx-rc	3,493	0.07	3,358	0.06	3.99
Lotus-Domino	3,328	0.06	3,373	0.06	-1.36
Safedog	2,884	0.05	3,369	0.06	-14.42
WWW	2,877	0.05	3,090	0.06	-6.92
EZproxy	2,632	0.05	2,623	0.05	0.32
Caddy	2,154	0.04	2,090	0.04	3.03
kangle	2,105	0.04	2,053	0.04	2.50
Cowboy	1,525	0.03	1,581	0.03	-3.57
squid	1,468	0.03	1,531	0.03	-4.14
Firewall	1,271	0.02	1,207	0.02	5.27
ws-httpd	1,165	0.02	1,171	0.02	-0.54
IIS	1,072	0.02	1,244	0.02	-13.85
Resin	1,041	0.02	1,041	0.02	-0.03
scl	965	0.02	947	0.02	1.87
-	960	0.02	1,067	0.02	-10.05
YxlinkWAF	953	0.02	881	0.02	8.14
IceWarp	930	0.02	936	0.02	-0.67
Icecast	863	0.02	861	0.02	0.20
AliyunOSS	833	0.02	802	0.02	3.84
WDaemon	830	0.02	845	0.02	-1.80
sffe	783	0.01	664	0.01	17.89
Server	777	0.01	752	0.01	3.30
GlassFish	774	0.01	784	0.01	-1.30
Destiny	769	0.01	786	0.01	-2.19
VWebServer	731	0.01	703	0.01	3.95
Zope	724	0.01	765	0.01	-5.39
ScreenConnect	668	0.01	678	0.01	-1.50
CHO	656	0.01	661	0.01	-0.78
Kestrel	628	0.01	660	0.01	-4.87
CentOS	620	0.01	662	0.01	-6.37
IBM_HTTP_Server	605	0.01	651	0.01	-7.09
ECAcc	554	0.01	567	0.01	-2.32
Oracle-Application-Server-10g	537	0.01	550	0.01	-2.39
III	518	0.01	544	0.01	-4.81
redir-httpd	487	0.01	488	0.01	-0.23
Rumpus	480	0.01	478	0.01	0.39
OpenBSD	438	0.01	438	0.01	-0.03
ATS	438	0.01	457	0.01	-4.18
EdgePrism	431	0.01	395	0.01	9.08
ngjit	412	0.01	378	0.01	8.96
QRATOR	407	0.01	401	0.01	1.47
web	404	0.01	347	0.01	16.39
nginx-clojure	398	0.01	292	0.01	36.26
Web	377	0.01	391	0.01	-3.61
aruba-proxy	367	0.01	366	0.01	0.25
WildFly	363	0.01	371	0.01	-2.18
Protected	362	0.01	375	0.01	-3.49
cc-web	343	0.01	342	0.01	0.26
Oracle-Application-Server-11g	340	0.01	349	0.01	-2.61
MageStack-MagentoOS	338	0.01	338	0.01	-0.03
CommuniGatePro	336	0.01	338	0.01	-0.62
WebServer	335	0.01	336	0.01	-0.32
4D	332	0.01	317	0.01	4.70
LRBD-2634612	325	0.01	0	0.00	N/A
WAF	324	0.01	299	0.01	8.33
unknown	316	0.01	0	0.00	N/A
shield	316	0.01	297	0.01	6.37
WowzaStreamingEngine	306	0.01	299	0.01	2.31
ECS	303	0.01	310	0.01	-2.28
Netscape-Enterprise	297	0.01	304	0.01	-2.33
Werkzeug	294	0.01	287	0.01	2.41
ghs	292	0.01	300	0.01	-2.69
Microsoft-Azure-Application-Gateway	280	0.01	0	0.00	N/A
*****************	280	0.01	0	0.00	N/A
F5aaS	275	0.01	252	0.00	9.10
Bomgar	273	0.01	287	0.01	-4.90
httpd	270	0.01	270	0.01	-0.03
UploadServer	261	0.00	235	0.00	11.03
ECD	259	0.00	248	0.00	4.41
awex	254	0.00	254	0.00	-0.03
long1	252	0.00	252	0.00	-0.03
bfe	251	0.00	244	0.00	2.84
gunicorn	246	0.00	234	0.00	5.10
Cougar	246	0.00	254	0.00	-3.18
SonicWALL	243	0.00	247	0.00	-1.65
FlowBalancer	243	0.00	241	0.00	0.80
myracloud	242	0.00	243	0.00	-0.44
RTS	236	0.00	235	0.00	0.40

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.