You are viewing an outdated report.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) 61,391,610 hostnames, but only 5,270,539 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	September 2019 Count	September 2019 %	August 2019 Count	August 2019 %	Growth %
Apache	2,203,401	41.81	2,204,484	42.26	-1.06
nginx	1,169,591	22.19	1,158,113	22.20	-0.04
Microsoft-IIS	724,364	13.74	711,183	13.63	0.82
null	325,924	6.18	314,742	6.03	2.50
Microsoft-HTTPAPI	310,685	5.89	308,856	5.92	-0.43
cloudflare	159,301	3.02	147,336	2.82	7.02
LiteSpeed	55,735	1.06	54,983	1.05	0.34
IdeaWebServer	43,957	0.83	44,006	0.84	-1.13
Tengine	36,128	0.69	29,973	0.57	19.31
BigIP	29,371	0.56	29,372	0.56	-1.02
Apache-Coyote	27,521	0.52	27,841	0.53	-2.15
openresty	15,628	0.30	15,729	0.30	-1.65
AkamaiGHost	12,958	0.25	15,571	0.30	-17.63
Flywheel	11,062	0.21	11,294	0.22	-3.05
AmazonS3	10,572	0.20	10,245	0.20	2.14
awselb	10,166	0.19	9,287	0.18	8.35
wts	5,664	0.11	5,629	0.11	-0.40
CloudFront	5,487	0.10	4,240	0.08	28.10
lighttpd	5,316	0.10	5,360	0.10	-1.83
Varnish	4,420	0.08	4,538	0.09	-3.59
nginx-reuseport	3,843	0.07	3,895	0.07	-2.34
Lotus-Domino	3,426	0.07	3,441	0.07	-1.45
nginx-rc	3,267	0.06	3,124	0.06	3.51
Safedog	3,095	0.06	3,293	0.06	-6.97
WWW	3,059	0.06	3,215	0.06	-5.82
EZproxy	2,639	0.05	2,614	0.05	-0.07
Caddy	2,032	0.04	1,975	0.04	1.84
kangle	1,989	0.04	2,046	0.04	-3.77
Cowboy	1,605	0.03	1,656	0.03	-4.06
squid	1,560	0.03	1,572	0.03	-1.77
IIS	1,305	0.02	1,313	0.03	-1.62
Firewall	1,263	0.02	1,532	0.03	-18.40
ws-httpd	1,173	0.02	1,160	0.02	0.09
Resin	1,052	0.02	1,064	0.02	-2.13
-	1,010	0.02	987	0.02	1.29
IceWarp	948	0.02	945	0.02	-0.70
scl	936	0.02	917	0.02	1.03
YxlinkWAF	857	0.02	917	0.02	-7.49
WDaemon	851	0.02	862	0.02	-2.28
Icecast	845	0.02	828	0.02	1.02
GlassFish	792	0.02	788	0.02	-0.51
AliyunOSS	792	0.02	751	0.01	4.39
Destiny	788	0.01	782	0.01	-0.26
Zope	787	0.01	795	0.02	-2.01
Nginx	779	0.01	736	0.01	4.77
Server	736	0.01	734	0.01	-0.75
VWebServer	733	0.01	774	0.01	-6.26
CentOS	703	0.01	751	0.01	-7.34
ScreenConnect	691	0.01	704	0.01	-2.84
IBM_HTTP_Server	668	0.01	696	0.01	-5.00
CHO	665	0.01	670	0.01	-1.75
sffe	653	0.01	695	0.01	-7.00
Kestrel	653	0.01	924	0.02	-30.05
ECAcc	594	0.01	588	0.01	-0.01
III	563	0.01	576	0.01	-3.25
Oracle-Application-Server-10g	556	0.01	570	0.01	-3.45
ATS	497	0.01	482	0.01	2.06
Rumpus	494	0.01	493	0.01	-0.82
redir-httpd	489	0.01	490	0.01	-1.22
OpenBSD	438	0.01	433	0.01	0.13
Web	407	0.01	471	0.01	-14.47
EdgePrism	397	0.01	396	0.01	-0.77
Protected	395	0.01	393	0.01	-0.51
QRATOR	394	0.01	382	0.01	2.09
WildFly	383	0.01	387	0.01	-2.04
aruba-proxy	365	0.01	361	0.01	0.08
WebServer	358	0.01	361	0.01	-1.84
Oracle-Application-Server-11g	357	0.01	365	0.01	-3.19
ngjit	356	0.01	331	0.01	6.46
web	354	0.01	354	0.01	-1.02
cc-web	340	0.01	340	0.01	-1.02
MageStack-MagentoOS	339	0.01	337	0.01	-0.43
CommuniGatePro	339	0.01	350	0.01	-4.13
LRBD-ab58398	326	0.01	327	0.01	-1.32
4D	326	0.01	321	0.01	0.53
o2switch	313	0.01	309	0.01	0.27
WowzaStreamingEngine	307	0.01	309	0.01	-1.66
Netscape-Enterprise	307	0.01	303	0.01	0.29
WAF	305	0.01	297	0.01	1.65
Werkzeug	300	0.01	299	0.01	-0.69
Bomgar	297	0.01	305	0.01	-3.61
ghs	296	0.01	290	0.01	1.03
ECS	295	0.01	312	0.01	-6.41
shield	290	0.01	283	0.01	1.43
*****************	289	0.01	309	0.01	-7.42
httpd	274	0.01	286	0.01	-5.17
Footprint	272	0.01	249	0.00	8.13
Cougar	263	0.00	273	0.01	-4.64
SonicWALL	262	0.00	254	0.00	2.10
cloudflare-nginx	259	0.00	241	0.00	6.38
awex	253	0.00	253	0.00	-1.02
long1	252	0.00	235	0.00	6.14
F5aaS	250	0.00	235	0.00	5.30
ECD	248	0.00	248	0.00	-1.02
myracloud	245	0.00	244	0.00	-0.61
bfe	244	0.00	250	0.00	-3.39
gunicorn	242	0.00	250	0.00	-4.18
FlowBalancer	242	0.00	0	0.00	N/A
1	240	0.00	246	0.00	-3.43
RTS	234	0.00	232	0.00	-0.16

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.