You are viewing an outdated report. The latest version of this report was published on September 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) 75,039,181 hostnames, but only 5,783,432 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	August 2015 Count	August 2015 %	July 2015 Count	July 2015 %	Growth %
Apache	3,032,291	52.43	3,020,438	52.54	-0.20
Microsoft-IIS	980,402	16.95	984,559	17.13	-1.01
nginx	634,414	10.97	615,700	10.71	2.43
null	470,704	8.14	472,303	8.22	-0.93
Microsoft-HTTPAPI	195,557	3.38	191,347	3.33	1.59
Apache-Coyote	62,978	1.09	61,984	1.08	1.00
cloudflare-nginx	62,085	1.07	60,190	1.05	2.53
IdeaWebServer	56,721	0.98	56,500	0.98	-0.21
LiteSpeed	35,784	0.62	36,284	0.63	-1.96
BigIP	18,149	0.31	17,235	0.30	4.68
IIS	17,632	0.30	18,710	0.33	-6.32
lighttpd	16,587	0.29	16,669	0.29	-1.08
squid	10,599	0.18	10,762	0.19	-2.10
A	9,771	0.17	9,860	0.17	-1.49
AkamaiGHost	9,661	0.17	10,410	0.18	-7.75
Rapidsite	7,508	0.13	7,636	0.13	-2.26
Lotus-Domino	7,310	0.13	7,332	0.13	-0.89
Tengine	5,951	0.10	5,327	0.09	11.05
WWW	5,223	0.09	4,824	0.08	7.63
Cowboy	5,021	0.09	5,074	0.09	-1.63
Safedog	4,776	0.08	4,919	0.09	-3.48
sffe	4,643	0.08	4,525	0.08	2.00
GSHD	4,531	0.08	3,249	0.06	38.63
Varnish	3,577	0.06	3,517	0.06	1.10
IBM_HTTP_Server	3,522	0.06	3,566	0.06	-1.82
kangle	3,164	0.05	3,269	0.06	-3.79
Flywheel	3,130	0.05	2,918	0.05	6.63
AmazonS3	2,829	0.05	2,762	0.05	1.82
Resin	2,626	0.05	2,630	0.05	-0.75
EZproxy	2,579	0.04	2,571	0.04	-0.29
Zope	2,433	0.04	2,438	0.04	-0.80
-	2,210	0.04	2,136	0.04	2.85
openresty	2,000	0.03	1,935	0.03	2.74
Oracle-Application-Server-10g	1,935	0.03	1,944	0.03	-1.06
WDaemon	1,827	0.03	1,621	0.03	12.04
CloudFront	1,642	0.03	1,516	0.03	7.67
Web	1,472	0.03	1,418	0.02	3.19
xServers	1,329	0.02	1,312	0.02	0.69
IceWarp	1,296	0.02	1,290	0.02	-0.13
GlassFish	1,253	0.02	1,228	0.02	1.43
III	1,149	0.02	1,146	0.02	-0.33
Cougar	1,145	0.02	1,179	0.02	-3.46
Oracle-Application-Server-11g	984	0.02	988	0.02	-1.00
Rumpus	969	0.02	967	0.02	-0.39
cpsrvd	943	0.02	920	0.02	1.89
Sun-ONE-Web-Server	891	0.02	907	0.02	-2.35
YxlinkWAF	858	0.01	845	0.01	0.93
Pantheon	838	0.01	806	0.01	3.35
Bomgar	817	0.01	815	0.01	-0.35
smartcds	815	0.01	826	0.01	-1.92
Zeus	802	0.01	818	0.01	-2.54
thttpd	790	0.01	791	0.01	-0.72
Advanced	759	0.01	633	0.01	19.19
WebServer	729	0.01	737	0.01	-1.67
Boa	726	0.01	732	0.01	-1.41
PWS	699	0.01	597	0.01	16.39
ScreenConnect	691	0.01	647	0.01	6.17
httpd	685	0.01	679	0.01	0.28
*****************	675	0.01	675	0.01	-0.59
Demandware	667	0.01	652	0.01	1.69
Oracle	660	0.01	653	0.01	0.47
EdgePrism	656	0.01	777	0.01	-16.08
CommuniGatePro	633	0.01	643	0.01	-2.14
Sun	608	0.01	621	0.01	-2.68
ATS	599	0.01	581	0.01	2.48
Cherokee	584	0.01	590	0.01	-1.61
redir-httpd	514	0.01	514	0.01	-0.59
Netscape-Enterprise	512	0.01	561	0.01	-9.28
GWS	510	0.01	511	0.01	-0.79
kisa	505	0.01	504	0.01	-0.40
Oracle-iPlanet-Web-Server	496	0.01	495	0.01	-0.39
SonicWALL	488	0.01	486	0.01	-0.19
Server	453	0.01	448	0.01	0.51
Apache-AdvancedExtranetServer	447	0.01	458	0.01	-2.98
FlashCom	435	0.01	450	0.01	-3.91
TWebAP	432	0.01	429	0.01	0.10
Sun-Java-System-Web-Server	428	0.01	429	0.01	-0.83
Jetty	417	0.01	429	0.01	-3.38
Google	417	0.01	415	0.01	-0.12
ngx_openresty	415	0.01	412	0.01	0.13
WS	402	0.01	424	0.01	-5.75
XiakeWeb	397	0.01	0	0.00	N/A
Icecast	389	0.01	353	0.01	9.54
Abyss	380	0.01	379	0.01	-0.33
Unknown	379	0.01	392	0.01	-3.89
gunicorn	378	0.01	380	0.01	-1.12
WowzaStreamingEngine	350	0.01	320	0.01	8.72
yunjiasu-nginx	343	0.01	301	0.01	13.28
NetBox	342	0.01	0	0.00	N/A
FC	339	0.01	324	0.01	4.01
SAP	338	0.01	347	0.01	-3.17
WebServerX	332	0.01	334	0.01	-1.19
QRATOR	330	0.01	325	0.01	0.93
OpenCms	326	0.01	326	0.01	-0.59
ghs	325	0.01	326	0.01	-0.90
cc-web	317	0.01	305	0.01	3.32
AnWeb	311	0.01	300	0.01	3.05
NOYB	306	0.01	313	0.01	-2.82
unknown	293	0.01	294	0.01	-0.93
HTTP	292	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.