You are viewing an outdated report.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) 61,798,467 hostnames, but only 4,672,747 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	July 2021 Count	July 2021 %	June 2021 Count	June 2021 %	Growth %
Apache	1,848,674	39.56	1,871,764	40.03	-1.16
nginx	1,349,291	28.88	1,320,375	28.24	2.26
Microsoft-IIS	393,217	8.42	402,184	8.60	-2.16
null	366,643	7.85	354,675	7.59	3.45
Microsoft-HTTPAPI	173,929	3.72	178,292	3.81	-2.38
cloudflare	100,308	2.15	99,706	2.13	0.67
LiteSpeed	73,799	1.58	74,008	1.58	-0.21
Nginx	57,577	1.23	65,594	1.40	-12.16
IdeaWebServer	38,614	0.83	38,842	0.83	-0.52
BigIP	28,543	0.61	28,813	0.62	-0.87
awselb	27,799	0.59	28,005	0.60	-0.67
openresty	21,775	0.47	21,778	0.47	0.06
Tengine	18,595	0.40	18,055	0.39	3.06
AkamaiGHost	16,735	0.36	14,170	0.30	18.18
Apache-Coyote	16,640	0.36	17,071	0.37	-2.46
AmazonS3	16,246	0.35	15,906	0.34	2.21
CloudFront	7,343	0.16	8,991	0.19	-18.27
Flywheel	6,150	0.13	6,307	0.13	-2.42
nginx-rc	6,108	0.13	6,026	0.13	1.43
wts	4,989	0.11	4,953	0.11	0.80
nginx-reuseport	4,142	0.09	4,151	0.09	-0.15
Varnish	3,992	0.09	3,947	0.08	1.21
lighttpd	3,836	0.08	3,884	0.08	-1.17
aeserver	3,664	0.08	3,775	0.08	-2.87
Caddy	3,636	0.08	3,483	0.07	4.47
EZproxy	2,432	0.05	2,454	0.05	-0.83
Lotus-Domino	2,375	0.05	2,405	0.05	-1.18
Microsoft-Azure-Application-Gateway	1,967	0.04	1,887	0.04	4.31
Safedog	1,501	0.03	1,378	0.03	9.00
WWW	1,460	0.03	1,308	0.03	11.70
Server	1,302	0.03	1,268	0.03	2.75
scl	1,162	0.02	1,155	0.02	0.68
AliyunOSS	1,089	0.02	1,113	0.02	-2.09
ws-httpd	1,006	0.02	1,084	0.02	-7.13
squid	989	0.02	1,010	0.02	-2.01
Icecast	952	0.02	964	0.02	-1.18
ddos-guard	814	0.02	797	0.02	2.20
Cowboy	807	0.02	903	0.02	-10.57
IceWarp	790	0.02	791	0.02	-0.06
VWebServer	747	0.02	759	0.02	-1.51
kangle	746	0.02	786	0.02	-5.02
o2switch-PowerBoost-v3	714	0.02	705	0.02	1.35
-	653	0.01	618	0.01	5.74
Kestrel	617	0.01	607	0.01	1.72
WDaemon	607	0.01	613	0.01	-0.91
Destiny	590	0.01	616	0.01	-4.15
IIS	575	0.01	585	0.01	-1.64
Firewall	558	0.01	879	0.02	-36.47
GlassFish	532	0.01	558	0.01	-4.59
ScreenConnect	516	0.01	526	0.01	-1.83
Resin	508	0.01	518	0.01	-1.86
aruba-proxy	489	0.01	488	0.01	0.27
OpenBSD	486	0.01	487	0.01	-0.14
CHO	484	0.01	487	0.01	-0.55
ATS	482	0.01	493	0.01	-2.16
Web	474	0.01	472	0.01	0.49
redir-httpd	473	0.01	477	0.01	-0.77
Zope	471	0.01	476	0.01	-0.98
QRATOR	444	0.01	462	0.01	-3.83
sffe	442	0.01	419	0.01	5.56
ECAcc	411	0.01	406	0.01	1.30
elb	385	0.01	372	0.01	3.57
Oracle-Application-Server-10g	379	0.01	384	0.01	-1.23
******	375	0.01	407	0.01	-7.80
cloudflare-nginx	366	0.01	370	0.01	-1.01
Rumpus	361	0.01	366	0.01	-1.30
EdgePrism	358	0.01	356	0.01	0.63
cc-web	339	0.01	339	0.01	0.07
WVS	339	0.01	339	0.01	0.07
UploadServer	331	0.01	325	0.01	1.92
uvicorn	329	0.01	0	0.00	N/A
web	328	0.01	323	0.01	1.62
LRBD-2004e49	322	0.01	323	0.01	-0.24
yunjiasu	320	0.01	0	0.00	N/A
eClass	318	0.01	316	0.01	0.70
ddosx	304	0.01	313	0.01	-2.81
IBM_HTTP_Server	303	0.01	322	0.01	-5.84
Netscape-Enterprise	300	0.01	300	0.01	0.07
envoy	292	0.01	292	0.01	0.07
ghs	291	0.01	299	0.01	-2.61
4D	288	0.01	294	0.01	-1.97
WildFly	286	0.01	295	0.01	-2.98
Windows-Azure-Blob	278	0.01	280	0.01	-0.65
istio-envoy	277	0.01	260	0.01	6.61
CommuniGatePro	277	0.01	284	0.01	-2.40
MageStack-MagentoOS	273	0.01	273	0.01	0.07
CentOS	265	0.01	267	0.01	-0.68
shield	263	0.01	270	0.01	-2.52
myracloud	255	0.01	249	0.01	2.48
bfe	255	0.01	266	0.01	-4.07
none	253	0.01	237	0.01	6.83
awex	253	0.01	252	0.01	0.47
WowzaStreamingEngine	253	0.01	244	0.01	3.76
Werkzeug	253	0.01	264	0.01	-4.10
WAF	253	0.01	245	0.01	3.34
kittenx	247	0.01	246	0.01	0.48
SmartXFilter	245	0.01	0	0.00	N/A
III	245	0.01	257	0.01	-4.60
ias	244	0.01	0	0.00	N/A
ECS	237	0.01	240	0.01	-1.18

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.