You are viewing an outdated report. The latest version of this report was published on December 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) 62,926,146 hostnames, but only 4,813,337 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	January 2021 Count	January 2021 %	December 2020 Count	December 2020 %	Growth %
Apache	1,968,346	40.89	1,995,321	41.11	-0.53
nginx	1,244,836	25.86	1,241,744	25.58	1.09
Microsoft-IIS	463,145	9.62	490,111	10.10	-4.71
null	340,213	7.07	340,351	7.01	0.80
Microsoft-HTTPAPI	195,393	4.06	203,860	4.20	-3.35
cloudflare	149,422	3.10	127,519	2.63	18.16
LiteSpeed	71,223	1.48	71,676	1.48	0.20
Nginx	56,696	1.18	59,246	1.22	-3.50
IdeaWebServer	40,259	0.84	40,549	0.84	0.12
BigIP	29,334	0.61	29,355	0.60	0.77
openresty	25,904	0.54	26,381	0.54	-0.99
awselb	24,025	0.50	23,729	0.49	2.10
Tengine	21,124	0.44	22,893	0.47	-6.95
AkamaiGHost	20,573	0.43	17,815	0.37	16.45
Apache-Coyote	19,620	0.41	20,132	0.41	-1.73
AmazonS3	13,719	0.29	13,622	0.28	1.56
CloudFront	8,770	0.18	8,106	0.17	9.10
Flywheel	6,888	0.14	6,985	0.14	-0.56
nginx-rc	5,601	0.12	5,508	0.11	2.54
wts	5,100	0.11	4,519	0.09	13.80
lighttpd	4,218	0.09	4,301	0.09	-1.11
Varnish	4,164	0.09	4,195	0.09	0.09
nginx-reuseport	4,156	0.09	4,177	0.09	0.33
Caddy	3,003	0.06	2,963	0.06	2.20
Firewall	2,694	0.06	3,274	0.07	-17.03
Lotus-Domino	2,631	0.05	2,679	0.06	-0.97
EZproxy	2,536	0.05	2,543	0.05	0.56
WWW	1,659	0.03	1,722	0.04	-2.85
Microsoft-Azure-Application-Gateway	1,464	0.03	1,406	0.03	5.00
uvicorn	1,407	0.03	373	0.01	280.37
kangle	1,315	0.03	1,261	0.03	5.16
Server	1,246	0.03	1,256	0.03	0.03
Safedog	1,193	0.02	1,391	0.03	-13.52
Cowboy	1,173	0.02	1,209	0.02	-2.17
AliyunOSS	1,151	0.02	1,122	0.02	3.44
ws-httpd	1,138	0.02	1,142	0.02	0.48
scl	1,105	0.02	1,115	0.02	-0.07
squid	1,103	0.02	1,138	0.02	-2.26
Icecast	884	0.02	885	0.02	0.72
VWebServer	846	0.02	835	0.02	2.17
IceWarp	814	0.02	825	0.02	-0.51
WDaemon	738	0.02	749	0.02	-0.64
ddos-guard	722	0.01	701	0.01	3.86
IIS	721	0.01	716	0.01	1.54
Destiny	668	0.01	685	0.01	-1.67
Resin	646	0.01	695	0.01	-6.27
o2switch-PowerBoost-v3	639	0.01	625	0.01	3.10
Kestrel	621	0.01	628	0.01	-0.29
GlassFish	610	0.01	635	0.01	-3.13
CHO	600	0.01	606	0.01	-0.16
Prometheus	575	0.01	604	0.01	-4.00
ScreenConnect	569	0.01	571	0.01	0.48
Zope	539	0.01	548	0.01	-0.82
sffe	516	0.01	648	0.01	-19.70
E2EE	508	0.01	1,125	0.02	-54.47
ATS	498	0.01	498	0.01	0.84
redir-httpd	483	0.01	486	0.01	0.22
OpenBSD	483	0.01	482	0.01	1.05
-	462	0.01	498	0.01	-6.45
QRATOR	435	0.01	435	0.01	0.84
Oracle-Application-Server-10g	423	0.01	427	0.01	-0.11
ECAcc	411	0.01	410	0.01	1.08
Web	404	0.01	407	0.01	0.09
aruba-proxy	395	0.01	442	0.01	-9.89
IBM_HTTP_Server	395	0.01	405	0.01	-1.65
Rumpus	391	0.01	398	0.01	-0.94
cloudflare-nginx	385	0.01	390	0.01	-0.46
ghs	362	0.01	345	0.01	5.81
CentOS	359	0.01	377	0.01	-3.98
******	344	0.01	347	0.01	-0.03
cc-web	337	0.01	344	0.01	-1.21
web	336	0.01	341	0.01	-0.64
EdgePrism	331	0.01	326	0.01	2.38
UploadServer	329	0.01	343	0.01	-3.28
YxlinkWAF	325	0.01	363	0.01	-9.72
WildFly	323	0.01	331	0.01	-1.60
LRBD-d513a0c	322	0.01	321	0.01	1.15
shield	312	0.01	319	0.01	-1.38
III	311	0.01	325	0.01	-3.51
elb	308	0.01	297	0.01	4.57
nginx-upupw	305	0.01	309	0.01	-0.47
ddosx	302	0.01	287	0.01	6.11
CommuniGatePro	300	0.01	300	0.01	0.84
4D	300	0.01	308	0.01	-1.78
eClass	292	0.01	291	0.01	1.18
MageStack-MagentoOS	289	0.01	289	0.01	0.84
Netscape-Enterprise	286	0.01	290	0.01	-0.55
Protected	285	0.01	290	0.01	-0.90
WowzaStreamingEngine	281	0.01	287	0.01	-1.27
bfe	277	0.01	278	0.01	0.47
Werkzeug	272	0.01	276	0.01	-0.62
envoy	271	0.01	262	0.01	4.30
kittenx	257	0.01	256	0.01	1.23
WAF	255	0.01	306	0.01	-15.97
awex	253	0.01	253	0.01	0.84
unknown	252	0.01	262	0.01	-3.01
none	251	0.01	0	0.00	N/A
gvs	250	0.01	0	0.00	N/A
SonicWALL	246	0.01	249	0.01	-0.38
*****************	245	0.01	254	0.01	-2.74

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.