You are viewing an outdated report.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) 62,266,671 hostnames, but only 4,588,249 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	December 2021 Count	December 2021 %	November 2021 Count	November 2021 %	Growth %
Apache	1,745,836	38.05	1,768,897	38.46	-1.07
nginx	1,393,151	30.36	1,382,588	30.06	1.00
null	380,085	8.28	379,473	8.25	0.39
Microsoft-IIS	353,642	7.71	361,500	7.86	-1.95
Microsoft-HTTPAPI	191,436	4.17	183,978	4.00	4.29
cloudflare	99,468	2.17	99,535	2.16	0.16
LiteSpeed	72,863	1.59	72,317	1.57	0.99
Nginx	48,029	1.05	46,497	1.01	3.53
IdeaWebServer	37,502	0.82	37,708	0.82	-0.32
awselb	30,189	0.66	29,977	0.65	0.94
BigIP	27,463	0.60	27,711	0.60	-0.67
openresty	21,326	0.46	21,507	0.47	-0.61
AkamaiGHost	17,616	0.38	17,557	0.38	0.57
AmazonS3	17,215	0.38	17,118	0.37	0.80
Tengine	16,311	0.36	15,661	0.34	4.39
Apache-Coyote	14,543	0.32	15,073	0.33	-3.29
CloudFront	7,485	0.16	7,304	0.16	2.72
nginx-rc	6,320	0.14	6,290	0.14	0.71
Flywheel	5,673	0.12	5,781	0.13	-1.64
wts	5,292	0.12	5,363	0.12	-1.10
nginx-reuseport	4,047	0.09	4,051	0.09	0.13
Caddy	3,842	0.08	3,790	0.08	1.61
lighttpd	3,608	0.08	3,683	0.08	-1.81
aeserver	3,601	0.08	3,733	0.08	-3.31
Varnish	3,573	0.08	3,565	0.08	0.46
Microsoft-Azure-Application-Gateway	2,417	0.05	2,318	0.05	4.51
EZproxy	2,351	0.05	2,380	0.05	-0.99
Lotus-Domino	2,233	0.05	2,272	0.05	-1.49
scl	1,828	0.04	1,355	0.03	35.22
Server	1,132	0.02	1,147	0.02	-1.08
Kestrel	1,087	0.02	1,156	0.03	-5.75
Safedog	1,085	0.02	1,053	0.02	3.28
AliyunOSS	1,071	0.02	1,099	0.02	-2.32
Icecast	997	0.02	998	0.02	0.13
squid	928	0.02	942	0.02	-1.26
ddos-guard	885	0.02	886	0.02	0.12
o2switch-PowerBoost-v3	762	0.02	741	0.02	3.07
IceWarp	744	0.02	759	0.02	-1.75
WWW	724	0.02	818	0.02	-11.29
kangle	714	0.02	726	0.02	-1.43
******	672	0.01	657	0.01	2.52
-	649	0.01	796	0.02	-18.28
WDaemon	543	0.01	556	0.01	-2.11
Destiny	521	0.01	549	0.01	-4.88
ATS	516	0.01	518	0.01	-0.16
yunjiasu	510	0.01	255	0.01	100.46
aruba-proxy	504	0.01	502	0.01	0.63
ScreenConnect	496	0.01	501	0.01	-0.77
OpenBSD	493	0.01	492	0.01	0.44
IIS	486	0.01	487	0.01	0.03
sffe	483	0.01	455	0.01	6.40
GlassFish	482	0.01	505	0.01	-4.33
redir-httpd	469	0.01	470	0.01	0.02
CHO	468	0.01	470	0.01	-0.19
VWebServer	463	0.01	486	0.01	-4.51
Resin	455	0.01	466	0.01	-2.13
QRATOR	455	0.01	463	0.01	-1.50
Web	428	0.01	443	0.01	-3.16
elb	425	0.01	411	0.01	3.65
Firewall	423	0.01	423	0.01	0.23
Zope	414	0.01	420	0.01	-1.20
ECAcc	411	0.01	407	0.01	1.22
WVS	406	0.01	409	0.01	-0.50
web	377	0.01	372	0.01	1.58
Swan	376	0.01	377	0.01	-0.03
envoy	372	0.01	336	0.01	10.97
cloudflare-nginx	344	0.01	345	0.01	-0.06
EdgePrism	344	0.01	345	0.01	-0.06
eClass	343	0.01	342	0.01	0.52
istio-envoy	336	0.01	323	0.01	4.27
Oracle-Application-Server-10g	335	0.01	341	0.01	-1.53
cc-web	331	0.01	329	0.01	0.84
UploadServer	331	0.01	335	0.01	-0.97
Rumpus	331	0.01	341	0.01	-2.71
LRBD-8e877ac	320	0.01	0	0.00	N/A
none	306	0.01	302	0.01	1.56
Windows-Azure-Blob	301	0.01	300	0.01	0.57
ddosx	291	0.01	302	0.01	-3.42
4D	283	0.01	286	0.01	-0.82
ghs	281	0.01	288	0.01	-2.20
Netscape-Enterprise	277	0.01	286	0.01	-2.92
ias	273	0.01	269	0.01	1.72
MageStack-MagentoOS	273	0.01	271	0.01	0.97
CommuniGatePro	269	0.01	280	0.01	-3.71
bfe	268	0.01	266	0.01	0.99
WAF	265	0.01	0	0.00	N/A
CloudWAF	265	0.01	248	0.01	7.10
myracloud	261	0.01	250	0.01	4.64
IBM_HTTP_Server	260	0.01	263	0.01	-0.91
uvicorn	258	0.01	272	0.01	-4.93
kittenx	258	0.01	255	0.01	1.41
WildFly	255	0.01	268	0.01	-4.63
awex	251	0.01	253	0.01	-0.56
rdwr	250	0.01	246	0.01	1.86
Werkzeug	235	0.01	239	0.01	-1.45
CentOS	231	0.01	238	0.01	-2.72
FlowBalancer	230	0.01	231	0.01	-0.20
WowzaStreamingEngine	228	0.00	235	0.01	-2.75
ECS	226	0.00	225	0.00	0.68
ldweb	225	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.