You are viewing an outdated report.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) 60,936,586 hostnames, but only 5,256,805 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	October 2019 Count	October 2019 %	September 2019 Count	September 2019 %	Growth %
Apache	2,177,643	41.43	2,203,401	41.81	-0.91
nginx	1,177,230	22.39	1,169,591	22.19	0.92
Microsoft-IIS	731,282	13.91	724,364	13.74	1.22
null	330,162	6.28	325,924	6.18	1.56
Microsoft-HTTPAPI	302,164	5.75	310,685	5.89	-2.49
cloudflare	159,724	3.04	159,301	3.02	0.53
LiteSpeed	56,070	1.07	55,735	1.06	0.86
IdeaWebServer	43,736	0.83	43,957	0.83	-0.24
Tengine	34,392	0.65	36,128	0.69	-4.56
BigIP	29,459	0.56	29,371	0.56	0.56
Apache-Coyote	27,109	0.52	27,521	0.52	-1.24
openresty	15,895	0.30	15,628	0.30	1.97
AkamaiGHost	14,736	0.28	12,958	0.25	14.02
AmazonS3	11,021	0.21	10,572	0.20	4.52
awselb	10,715	0.20	10,166	0.19	5.68
Flywheel	10,529	0.20	11,062	0.21	-4.57
CloudFront	6,329	0.12	5,487	0.10	15.65
wts	5,457	0.10	5,664	0.11	-3.40
lighttpd	5,208	0.10	5,316	0.10	-1.78
Varnish	4,285	0.08	4,420	0.08	-2.80
nginx-reuseport	3,899	0.07	3,843	0.07	1.72
Lotus-Domino	3,373	0.06	3,426	0.07	-1.29
Safedog	3,369	0.06	3,095	0.06	9.14
nginx-rc	3,358	0.06	3,267	0.06	3.05
WWW	3,090	0.06	3,059	0.06	1.28
EZproxy	2,623	0.05	2,639	0.05	-0.35
Caddy	2,090	0.04	2,032	0.04	3.12
kangle	2,053	0.04	1,989	0.04	3.49
Cowboy	1,581	0.03	1,605	0.03	-1.24
squid	1,531	0.03	1,560	0.03	-1.60
IIS	1,244	0.02	1,305	0.02	-4.43
Firewall	1,207	0.02	1,263	0.02	-4.18
ws-httpd	1,171	0.02	1,173	0.02	0.09
-	1,067	0.02	1,010	0.02	5.92
Resin	1,041	0.02	1,052	0.02	-0.79
scl	947	0.02	936	0.02	1.44
IceWarp	936	0.02	948	0.02	-1.01
YxlinkWAF	881	0.02	857	0.02	3.07
Icecast	861	0.02	845	0.02	2.16
Nginx	855	0.02	779	0.01	10.04
WDaemon	845	0.02	851	0.02	-0.45
AliyunOSS	802	0.02	792	0.02	1.53
Destiny	786	0.01	788	0.01	0.01
GlassFish	784	0.01	792	0.02	-0.75
Zope	765	0.01	787	0.01	-2.54
Server	752	0.01	736	0.01	2.44
VWebServer	703	0.01	733	0.01	-3.84
ScreenConnect	678	0.01	691	0.01	-1.62
sffe	664	0.01	653	0.01	1.95
CentOS	662	0.01	703	0.01	-5.59
CHO	661	0.01	665	0.01	-0.34
Kestrel	660	0.01	653	0.01	1.34
IBM_HTTP_Server	651	0.01	668	0.01	-2.29
ECAcc	567	0.01	594	0.01	-4.30
Oracle-Application-Server-10g	550	0.01	556	0.01	-0.82
III	544	0.01	563	0.01	-3.12
redir-httpd	488	0.01	489	0.01	0.06
Rumpus	478	0.01	494	0.01	-2.99
ATS	457	0.01	497	0.01	-7.81
OpenBSD	438	0.01	438	0.01	0.26
QRATOR	401	0.01	394	0.01	2.04
EdgePrism	395	0.01	397	0.01	-0.24
Web	391	0.01	407	0.01	-3.68
ngjit	378	0.01	356	0.01	6.46
Protected	375	0.01	395	0.01	-4.82
WildFly	371	0.01	383	0.01	-2.88
aruba-proxy	366	0.01	365	0.01	0.54
Oracle-Application-Server-11g	349	0.01	357	0.01	-1.99
web	347	0.01	354	0.01	-1.72
cc-web	342	0.01	340	0.01	0.85
MageStack-MagentoOS	338	0.01	339	0.01	-0.03
CommuniGatePro	338	0.01	339	0.01	-0.03
WebServer	336	0.01	358	0.01	-5.90
LRBD-0aa2db4	326	0.01	0	0.00	N/A
o2switch	319	0.01	313	0.01	2.18
4D	317	0.01	326	0.01	-2.51
ECS	310	0.01	295	0.01	5.36
Netscape-Enterprise	304	0.01	307	0.01	-0.72
ghs	300	0.01	296	0.01	1.62
WowzaStreamingEngine	299	0.01	307	0.01	-2.35
WAF	299	0.01	305	0.01	-1.71
shield	297	0.01	290	0.01	2.68
nginx-clojure	292	0.01	0	0.00	N/A
Werkzeug	287	0.01	300	0.01	-4.08
Bomgar	287	0.01	297	0.01	-3.11
mORMot	273	0.01	0	0.00	N/A
httpd	270	0.01	274	0.01	-1.20
awex	254	0.00	253	0.00	0.66
Cougar	254	0.00	263	0.00	-3.17
long1	252	0.00	252	0.00	0.26
F5aaS	252	0.00	250	0.00	1.06
ECD	248	0.00	248	0.00	0.26
SonicWALL	247	0.00	262	0.00	-5.48
bfe	244	0.00	244	0.00	0.26
myracloud	243	0.00	245	0.00	-0.56
FlowBalancer	241	0.00	242	0.00	-0.15
Wanguo	235	0.00	0	0.00	N/A
UploadServer	235	0.00	0	0.00	N/A
RTS	235	0.00	234	0.00	0.69
gunicorn	234	0.00	242	0.00	-3.05

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.