You are viewing an outdated report. The latest version of this report was published on April 1st, 2025

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) 74,430,824 hostnames, but only 5,771,421 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	June 2015 Count	June 2015 %	May 2015 Count	May 2015 %	Growth %
Apache	3,029,892	52.50	3,045,614	52.55	-0.09
Microsoft-IIS	1,003,516	17.39	1,017,689	17.56	-0.97
nginx	604,294	10.47	593,768	10.24	2.21
null	481,548	8.34	492,120	8.49	-1.73
Microsoft-HTTPAPI	188,287	3.26	185,235	3.20	2.08
Apache-Coyote	62,402	1.08	62,410	1.08	0.41
cloudflare-nginx	59,008	1.02	54,527	0.94	8.68
IdeaWebServer	56,695	0.98	56,857	0.98	0.14
LiteSpeed	34,398	0.60	33,701	0.58	2.50
IIS	20,776	0.36	24,261	0.42	-14.00
lighttpd	17,668	0.31	17,893	0.31	-0.84
BigIP	16,908	0.29	16,615	0.29	2.20
squid	10,672	0.18	10,498	0.18	2.09
A	9,962	0.17	10,065	0.17	-0.60
AkamaiGHost	8,444	0.15	8,676	0.15	-2.26
Rapidsite	7,777	0.13	7,903	0.14	-1.18
Lotus-Domino	7,495	0.13	7,635	0.13	-1.42
Tengine	5,633	0.10	5,488	0.09	3.08
Safedog	5,025	0.09	4,827	0.08	4.55
Cowboy	5,003	0.09	4,961	0.09	1.28
sffe	4,949	0.09	4,900	0.08	1.43
WWW	4,774	0.08	4,817	0.08	-0.47
IBM_HTTP_Server	3,648	0.06	3,812	0.07	-3.89
Varnish	3,570	0.06	3,461	0.06	3.59
kangle	3,218	0.06	2,645	0.05	22.18
GSHD	2,959	0.05	3,011	0.05	-1.31
AmazonS3	2,748	0.05	2,667	0.05	3.48
Flywheel	2,715	0.05	2,554	0.04	6.76
Resin	2,664	0.05	2,666	0.05	0.35
EZproxy	2,563	0.04	2,535	0.04	1.53
Zope	2,484	0.04	2,507	0.04	-0.50
-	2,195	0.04	2,123	0.04	3.83
Oracle-Application-Server-10g	2,013	0.03	2,058	0.04	-1.77
openresty	1,880	0.03	1,795	0.03	5.18
WDaemon	1,614	0.03	1,635	0.03	-0.86
CloudFront	1,507	0.03	1,657	0.03	-8.67
Web	1,432	0.02	1,460	0.03	-1.50
IceWarp	1,309	0.02	1,304	0.02	0.81
xServers	1,302	0.02	1,313	0.02	-0.42
Cougar	1,229	0.02	1,295	0.02	-4.69
GlassFish	1,222	0.02	1,219	0.02	0.67
III	1,155	0.02	1,158	0.02	0.17
Oracle-Application-Server-11g	994	0.02	994	0.02	0.43
Rumpus	964	0.02	972	0.02	-0.40
Sun-ONE-Web-Server	952	0.02	964	0.02	-0.82
cpsrvd	939	0.02	940	0.02	0.32
Zeus	842	0.01	904	0.02	-6.46
thttpd	812	0.01	820	0.01	-0.55
Bomgar	811	0.01	812	0.01	0.30
YxlinkWAF	785	0.01	680	0.01	15.93
smartcds	778	0.01	802	0.01	-2.58
Pantheon	757	0.01	736	0.01	3.29
EdgePrism	745	0.01	778	0.01	-3.83
WebServer	737	0.01	747	0.01	-0.92
Boa	731	0.01	749	0.01	-1.99
httpd	696	0.01	699	0.01	-0.01
Oracle	673	0.01	683	0.01	-1.04
Demandware	650	0.01	633	0.01	3.12
Sun	649	0.01	667	0.01	-2.28
CommuniGatePro	648	0.01	660	0.01	-1.40
*****************	640	0.01	669	0.01	-3.93
ScreenConnect	627	0.01	605	0.01	4.08
ATS	612	0.01	574	0.01	7.07
PWS	608	0.01	603	0.01	1.26
Cherokee	589	0.01	599	0.01	-1.25
Netscape-Enterprise	586	0.01	613	0.01	-4.00
GWS	529	0.01	543	0.01	-2.16
redir-httpd	510	0.01	510	0.01	0.43
kisa	498	0.01	501	0.01	-0.18
Oracle-iPlanet-Web-Server	494	0.01	496	0.01	0.02
Apache-AdvancedExtranetServer	473	0.01	479	0.01	-0.83
SonicWALL	468	0.01	472	0.01	-0.43
FlashCom	467	0.01	475	0.01	-1.27
Sun-Java-System-Web-Server	443	0.01	460	0.01	-3.29
Jetty	443	0.01	450	0.01	-1.14
TWebAP	434	0.01	432	0.01	0.89
WS	431	0.01	430	0.01	0.66
Server	431	0.01	428	0.01	1.13
FC	422	0.01	442	0.01	-4.12
Google	421	0.01	422	0.01	0.19
ngx_openresty	418	0.01	438	0.01	-4.16
Abyss	383	0.01	398	0.01	-3.36
gunicorn	367	0.01	370	0.01	-0.39
Unknown	363	0.01	370	0.01	-1.47
yunjiasu-nginx	352	0.01	280	0.00	26.25
SAP	349	0.01	346	0.01	1.30
Icecast	347	0.01	317	0.01	9.93
WebServerX	335	0.01	348	0.01	-3.33
GSYQ	331	0.01	0	0.00	N/A
AnWeb	331	0.01	333	0.01	-0.18
NOYB	325	0.01	350	0.01	-6.75
OpenCms	324	0.01	335	0.01	-2.87
ghs	322	0.01	324	0.01	-0.19
QRATOR	321	0.01	313	0.01	2.99
cc-web	299	0.01	301	0.01	-0.24
WowzaStreamingEngine	297	0.01	0	0.00	N/A
HTTP	292	0.01	295	0.01	-0.60
Footprint	291	0.01	283	0.00	3.26
unknown	290	0.01	284	0.00	2.55
Sucuri	282	0.00	292	0.01	-3.01

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.