You are viewing an outdated report.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) 59,769,701 hostnames, but only 5,003,894 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	May 2019 Count	May 2019 %	April 2019 Count	April 2019 %	Growth %
Apache	2,184,846	43.66	2,170,073	43.80	-0.31
nginx	1,086,676	21.72	1,064,083	21.48	1.12
Microsoft-IIS	659,630	13.18	654,420	13.21	-0.19
null	307,403	6.14	309,989	6.26	-1.81
Microsoft-HTTPAPI	281,811	5.63	274,047	5.53	1.82
cloudflare	122,795	2.45	118,712	2.40	2.42
LiteSpeed	49,939	1.00	48,501	0.98	1.95
IdeaWebServer	44,367	0.89	45,073	0.91	-2.53
BigIP	29,711	0.59	29,565	0.60	-0.49
Apache-Coyote	27,594	0.55	28,028	0.57	-2.52
openresty	22,469	0.45	24,334	0.49	-8.57
AkamaiGHost	15,705	0.31	16,936	0.34	-8.18
Tengine	15,612	0.31	14,000	0.28	10.42
Flywheel	12,674	0.25	13,113	0.26	-4.30
AmazonS3	9,088	0.18	8,719	0.18	3.21
awselb	7,295	0.15	6,168	0.12	17.11
lighttpd	5,489	0.11	5,612	0.11	-3.15
wts	5,428	0.11	5,534	0.11	-2.88
CloudFront	5,068	0.10	4,448	0.09	12.82
Varnish	4,473	0.09	4,395	0.09	0.78
nginx-reuseport	3,528	0.07	3,436	0.07	1.67
Lotus-Domino	3,503	0.07	3,593	0.07	-3.46
WWW	3,316	0.07	3,552	0.07	-7.56
Safedog	3,097	0.06	2,910	0.06	5.38
nginx-rc	2,643	0.05	2,429	0.05	7.74
EZproxy	2,608	0.05	2,583	0.05	-0.02
kangle	2,188	0.04	2,538	0.05	-14.64
Caddy	1,821	0.04	1,626	0.03	10.89
Firewall	1,738	0.03	1,948	0.04	-11.66
squid	1,698	0.03	1,811	0.04	-7.16
Cowboy	1,525	0.03	1,842	0.04	-18.02
ClausWeb-nginx	1,452	0.03	1,577	0.03	-8.83
IIS	1,385	0.03	1,479	0.03	-7.28
Kestrel	1,367	0.03	1,228	0.02	10.23
-	1,174	0.02	1,156	0.02	0.56
ws-httpd	1,155	0.02	1,155	0.02	-0.98
Resin	1,078	0.02	1,088	0.02	-1.89
IceWarp	950	0.02	947	0.02	-0.67
YxlinkWAF	928	0.02	870	0.02	5.62
scl	892	0.02	847	0.02	4.28
WDaemon	876	0.02	890	0.02	-2.54
Zope	827	0.02	845	0.02	-3.09
Destiny	807	0.02	798	0.02	0.13
GlassFish	778	0.02	769	0.02	0.18
CentOS	776	0.02	830	0.02	-7.42
Icecast	760	0.02	729	0.01	3.23
IBM_HTTP_Server	748	0.01	778	0.02	-4.80
VWebServer	747	0.01	781	0.02	-5.29
sffe	725	0.01	767	0.02	-6.40
ScreenConnect	706	0.01	709	0.01	-1.40
Server	700	0.01	698	0.01	-0.70
CHO	680	0.01	689	0.01	-2.28
III	673	0.01	742	0.01	-10.19
Nginx	667	0.01	637	0.01	3.68
AliyunOSS	653	0.01	601	0.01	7.59
Oracle-Application-Server-10g	589	0.01	596	0.01	-2.15
ECAcc	574	0.01	563	0.01	0.95
Web	514	0.01	517	0.01	-1.56
Rumpus	501	0.01	514	0.01	-3.49
EdgePrism	498	0.01	449	0.01	9.82
redir-httpd	487	0.01	488	0.01	-1.19
ATS	475	0.01	497	0.01	-5.37
WebServer	459	0.01	483	0.01	-5.90
PWS	417	0.01	520	0.01	-20.60
OpenBSD	415	0.01	415	0.01	-0.98
Oracle-Application-Server-11g	384	0.01	398	0.01	-4.47
QRATOR	383	0.01	389	0.01	-2.51
Protected	379	0.01	413	0.01	-9.13
WildFly	367	0.01	367	0.01	-0.98
CommuniGatePro	367	0.01	374	0.01	-2.84
web	358	0.01	321	0.01	10.43
Bomgar	351	0.01	374	0.01	-7.07
aruba-proxy	341	0.01	332	0.01	1.70
cc-web	334	0.01	332	0.01	-0.39
*****************	328	0.01	363	0.01	-10.53
MageStack-MagentoOS	323	0.01	317	0.01	0.89
ECS	321	0.01	323	0.01	-1.60
LRBD-ab58398	320	0.01	0	0.00	N/A
WowzaStreamingEngine	314	0.01	321	0.01	-3.14
4D	309	0.01	304	0.01	0.65
ngjit	307	0.01	289	0.01	5.19
httpd	306	0.01	312	0.01	-2.89
WAF	303	0.01	317	0.01	-5.36
Cougar	297	0.01	314	0.01	-6.34
ghs	283	0.01	284	0.01	-1.33
TWebAP	279	0.01	279	0.01	-0.98
Werkzeug	276	0.01	269	0.01	1.59
shield	269	0.01	257	0.01	3.64
Netscape-Enterprise	269	0.01	295	0.01	-9.71
awex	254	0.01	252	0.01	-0.20
Footprint	253	0.01	278	0.01	-9.89
1	253	0.01	258	0.01	-2.90
long1	251	0.01	251	0.01	-0.98
gunicorn	250	0.00	0	0.00	N/A
o2switch	249	0.00	0	0.00	N/A
ECD	249	0.00	0	0.00	N/A
SonicWALL	248	0.00	248	0.01	-0.98
bfe	247	0.00	250	0.01	-2.17
Abyss	247	0.00	248	0.01	-1.38
myracloud	238	0.00	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.