You are viewing an outdated report.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) 60,965,789 hostnames, but only 4,931,331 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	May 2016 Count	May 2016 %	April 2016 Count	April 2016 %	Growth %
Apache	2,496,303	50.62	2,445,774	51.23	-1.18
Microsoft-IIS	749,292	15.19	714,937	14.97	1.47
nginx	710,574	14.41	681,233	14.27	0.99
null	357,885	7.26	345,019	7.23	0.43
Microsoft-HTTPAPI	179,996	3.65	171,413	3.59	1.67
cloudflare-nginx	71,404	1.45	68,754	1.44	0.55
Apache-Coyote	54,503	1.11	52,801	1.11	-0.06
IdeaWebServer	46,801	0.95	45,494	0.95	-0.40
LiteSpeed	31,973	0.65	30,844	0.65	0.36
BigIP	17,930	0.36	17,074	0.36	1.67
lighttpd	12,495	0.25	12,626	0.26	-4.18
IIS	12,338	0.25	12,279	0.26	-2.71
AkamaiGHost	11,480	0.23	8,830	0.18	25.88
squid	9,108	0.18	8,777	0.18	0.47
A	6,193	0.13	5,770	0.12	3.92
Tengine	6,191	0.13	5,830	0.12	2.82
Lotus-Domino	5,837	0.12	5,696	0.12	-0.78
WWW	5,507	0.11	4,986	0.10	6.94
Flywheel	4,595	0.09	4,263	0.09	4.36
Rapidsite	4,578	0.09	4,530	0.09	-2.15
Cowboy	4,484	0.09	4,121	0.09	5.35
sffe	4,329	0.09	4,095	0.09	2.35
Safedog	4,314	0.09	4,253	0.09	-1.79
Varnish	3,695	0.07	3,523	0.07	1.55
GSHD	3,637	0.07	3,015	0.06	16.79
wts	3,327	0.07	1,322	0.03	143.66
AmazonS3	2,974	0.06	2,897	0.06	-0.61
openresty	2,940	0.06	2,792	0.06	1.95
kangle	2,916	0.06	2,819	0.06	0.15
EZproxy	2,611	0.05	2,594	0.05	-2.54
CloudFront	2,459	0.05	2,199	0.05	8.27
IBM_HTTP_Server	2,200	0.04	2,181	0.05	-2.34
Resin	2,096	0.04	2,074	0.04	-2.15
Zope	1,882	0.04	1,815	0.04	0.39
-	1,727	0.04	1,790	0.04	-6.59
Destiny	1,611	0.03	1,404	0.03	11.10
WDaemon	1,417	0.03	1,430	0.03	-4.06
Oracle-Application-Server-10g	1,376	0.03	1,365	0.03	-2.40
xServers	1,258	0.03	1,201	0.03	1.42
Pantheon	1,225	0.02	1,091	0.02	8.71
nginx-reuseport	1,224	0.02	0	0.00	N/A
IceWarp	1,213	0.02	1,223	0.03	-3.97
GlassFish	1,122	0.02	1,103	0.02	-1.51
III	1,100	0.02	1,105	0.02	-3.62
NetBox	1,040	0.02	940	0.02	7.12
YxlinkWAF	985	0.02	762	0.02	25.16
Cougar	938	0.02	957	0.02	-5.10
Rumpus	914	0.02	917	0.02	-3.50
Black	857	0.02	510	0.01	62.70
Web	843	0.02	887	0.02	-7.98
ScreenConnect	812	0.02	788	0.02	-0.23
Oracle-Application-Server-11g	800	0.02	787	0.02	-1.58
Bomgar	797	0.02	800	0.02	-3.54
PWS	733	0.01	655	0.01	8.35
CHO	707	0.01	665	0.01	2.94
EdgePrism	705	0.01	590	0.01	15.69
thttpd	657	0.01	660	0.01	-3.62
ATS	657	0.01	655	0.01	-2.88
WebServer	636	0.01	603	0.01	2.12
httpd	600	0.01	577	0.01	0.68
Boa	585	0.01	602	0.01	-5.91
*****************	580	0.01	543	0.01	3.42
ws-httpd	563	0.01	531	0.01	2.66
Oracle	562	0.01	553	0.01	-1.60
CommuniGatePro	551	0.01	555	0.01	-3.88
Sun-ONE-Web-Server	535	0.01	550	0.01	-5.82
Icecast	524	0.01	511	0.01	-0.72
kisa	520	0.01	508	0.01	-0.89
Nginx-VPSSIM	500	0.01	462	0.01	4.78
redir-httpd	489	0.01	486	0.01	-2.58
Protected	486	0.01	481	0.01	-2.17
Sun	479	0.01	485	0.01	-4.38
Oracle-iPlanet-Web-Server	479	0.01	446	0.01	3.98
Server	472	0.01	450	0.01	1.55
Nginx	472	0.01	417	0.01	9.59
Zeus	463	0.01	460	0.01	-2.55
WowzaStreamingEngine	439	0.01	433	0.01	-1.84
yunjiasu-nginx	436	0.01	337	0.01	25.26
Cherokee	434	0.01	439	0.01	-4.28
TWebAP	405	0.01	341	0.01	14.99
SonicWALL	405	0.01	401	0.01	-2.21
Google	403	0.01	400	0.01	-2.45
YUNDUN	400	0.01	394	0.01	-1.71
1	383	0.01	416	0.01	-10.86
QRATOR	379	0.01	377	0.01	-2.67
NginxPlus	370	0.01	295	0.01	21.44
Apache-AdvancedExtranetServer	365	0.01	367	0.01	-3.71
cc-web	351	0.01	343	0.01	-0.92
Unknown	351	0.01	335	0.01	1.44
GWS	343	0.01	353	0.01	-5.92
gunicorn	338	0.01	333	0.01	-1.73
Netscape-Enterprise	336	0.01	333	0.01	-2.31
Jetty	327	0.01	328	0.01	-3.47
Abyss	320	0.01	320	0.01	-3.18
SAP	309	0.01	306	0.01	-2.23
ngx_openresty	304	0.01	302	0.01	-2.54
cpsrvd	301	0.01	310	0.01	-5.99
FlashCom	297	0.01	306	0.01	-6.03
ghs	285	0.01	0	0.00	N/A
OpenCms	275	0.01	0	0.00	N/A

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.