You are viewing an outdated report. The latest version of this report was published on September 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) 61,956,995 hostnames, but only 4,598,881 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 2021 Count	November 2021 %	October 2021 Count	October 2021 %	Growth %
Apache	1,768,897	38.46	1,787,939	38.87	-1.05
nginx	1,382,588	30.06	1,377,352	29.95	0.39
null	379,473	8.25	374,204	8.14	1.42
Microsoft-IIS	361,500	7.86	370,110	8.05	-2.31
Microsoft-HTTPAPI	183,978	4.00	163,297	3.55	12.68
cloudflare	99,535	2.16	99,444	2.16	0.10
LiteSpeed	72,317	1.57	71,648	1.56	0.95
Nginx	46,497	1.01	53,208	1.16	-12.60
IdeaWebServer	37,708	0.82	37,992	0.83	-0.73
awselb	29,977	0.65	29,472	0.64	1.73
BigIP	27,711	0.60	28,176	0.61	-1.64
openresty	21,507	0.47	20,667	0.45	4.08
AkamaiGHost	17,557	0.38	15,634	0.34	12.31
AmazonS3	17,118	0.37	16,588	0.36	3.21
Tengine	15,661	0.34	16,353	0.36	-4.22
Apache-Coyote	15,073	0.33	15,271	0.33	-1.28
CloudFront	7,304	0.16	7,079	0.15	3.19
nginx-rc	6,290	0.14	6,307	0.14	-0.26
Flywheel	5,781	0.13	5,919	0.13	-2.32
wts	5,363	0.12	5,338	0.12	0.48
nginx-reuseport	4,051	0.09	4,067	0.09	-0.38
Caddy	3,790	0.08	3,683	0.08	2.92
aeserver	3,733	0.08	2,476	0.05	50.79
lighttpd	3,683	0.08	3,750	0.08	-1.77
Varnish	3,565	0.08	3,592	0.08	-0.74
EZproxy	2,380	0.05	2,379	0.05	0.05
Microsoft-Azure-Application-Gateway	2,318	0.05	2,216	0.05	4.62
Lotus-Domino	2,272	0.05	2,288	0.05	-0.69
scl	1,355	0.03	1,172	0.03	15.63
Kestrel	1,156	0.03	765	0.02	51.13
Server	1,147	0.02	1,114	0.02	2.98
AliyunOSS	1,099	0.02	1,076	0.02	2.15
Safedog	1,053	0.02	1,631	0.04	-35.43
Icecast	998	0.02	950	0.02	5.07
squid	942	0.02	952	0.02	-1.04
ddos-guard	886	0.02	887	0.02	-0.10
WWW	818	0.02	880	0.02	-7.03
-	796	0.02	783	0.02	1.67
IceWarp	759	0.02	765	0.02	-0.77
o2switch-PowerBoost-v3	741	0.02	738	0.02	0.42
kangle	726	0.02	931	0.02	-22.01
******	657	0.01	353	0.01	86.14
WDaemon	556	0.01	567	0.01	-1.93
BitNinja	552	0.01	1,463	0.03	-62.26
Destiny	549	0.01	556	0.01	-1.25
ATS	518	0.01	472	0.01	9.76
GlassFish	505	0.01	513	0.01	-1.55
aruba-proxy	502	0.01	502	0.01	0.01
ScreenConnect	501	0.01	508	0.01	-1.37
OpenBSD	492	0.01	489	0.01	0.63
IIS	487	0.01	505	0.01	-3.55
VWebServer	486	0.01	760	0.02	-36.04
redir-httpd	470	0.01	470	0.01	0.01
CHO	470	0.01	472	0.01	-0.41
Resin	466	0.01	468	0.01	-0.41
QRATOR	463	0.01	470	0.01	-1.48
sffe	455	0.01	402	0.01	13.20
Web	443	0.01	445	0.01	-0.44
Firewall	423	0.01	433	0.01	-2.30
Zope	420	0.01	441	0.01	-4.75
elb	411	0.01	390	0.01	5.40
WVS	409	0.01	387	0.01	5.70
ECAcc	407	0.01	419	0.01	-2.85
Swan	377	0.01	398	0.01	-5.26
web	372	0.01	353	0.01	5.40
cloudflare-nginx	345	0.01	351	0.01	-1.70
EdgePrism	345	0.01	342	0.01	0.89
eClass	342	0.01	341	0.01	0.31
Rumpus	341	0.01	348	0.01	-2.00
Oracle-Application-Server-10g	341	0.01	349	0.01	-2.28
envoy	336	0.01	305	0.01	10.18
UploadServer	335	0.01	327	0.01	2.46
cc-web	329	0.01	338	0.01	-2.65
istio-envoy	323	0.01	298	0.01	8.40
LRBD-e6a1775	321	0.01	322	0.01	-0.30
none	302	0.01	284	0.01	6.35
ddosx	302	0.01	302	0.01	0.01
Windows-Azure-Blob	300	0.01	290	0.01	3.46
ghs	288	0.01	272	0.01	5.90
Netscape-Enterprise	286	0.01	283	0.01	1.07
4D	286	0.01	284	0.01	0.72
CommuniGatePro	280	0.01	273	0.01	2.58
uvicorn	272	0.01	311	0.01	-12.53
MageStack-MagentoOS	271	0.01	270	0.01	0.38
ias	269	0.01	259	0.01	3.87
WildFly	268	0.01	263	0.01	1.91
bfe	266	0.01	264	0.01	0.77
IBM_HTTP_Server	263	0.01	271	0.01	-2.94
yunjiasu	255	0.01	337	0.01	-24.32
kittenx	255	0.01	254	0.01	0.41
awex	253	0.01	253	0.01	0.01
myracloud	250	0.01	251	0.01	-0.39
CloudWAF	248	0.01	0	0.00	N/A
rdwr	246	0.01	234	0.01	5.14
Werkzeug	239	0.01	241	0.01	-0.82
CentOS	238	0.01	240	0.01	-0.82
WowzaStreamingEngine	235	0.01	239	0.01	-1.66
FlowBalancer	231	0.01	231	0.01	0.01
SonicWALL	225	0.00	0	0.00	N/A
ECS	225	0.00	229	0.00	-1.73

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.