You are viewing an outdated report.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) 75,104,606 hostnames, but only 5,744,586 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 2015 Count	October 2015 %	September 2015 Count	September 2015 %	Growth %
Apache	3,020,940	52.59	3,034,462	52.57	0.04
Microsoft-IIS	947,332	16.49	965,193	16.72	-1.38
nginx	652,336	11.36	644,066	11.16	1.77
null	447,842	7.80	459,539	7.96	-2.07
Microsoft-HTTPAPI	197,260	3.43	193,935	3.36	2.21
cloudflare-nginx	67,269	1.17	62,813	1.09	7.61
Apache-Coyote	63,303	1.10	62,812	1.09	1.27
IdeaWebServer	56,904	0.99	56,871	0.99	0.54
LiteSpeed	37,220	0.65	37,042	0.64	0.97
IIS	19,437	0.34	20,723	0.36	-5.75
BigIP	18,833	0.33	18,461	0.32	2.51
lighttpd	15,515	0.27	15,830	0.27	-1.52
AkamaiGHost	10,591	0.18	10,068	0.17	5.70
squid	10,582	0.18	10,656	0.18	-0.22
A	9,591	0.17	9,695	0.17	-0.60
Rapidsite	7,184	0.13	7,380	0.13	-2.19
Lotus-Domino	7,108	0.12	7,209	0.12	-0.93
Tengine	6,139	0.11	6,163	0.11	0.09
WWW	5,221	0.09	5,212	0.09	0.66
Cowboy	5,193	0.09	5,150	0.09	1.32
Safedog	4,517	0.08	4,481	0.08	1.29
sffe	4,350	0.08	4,626	0.08	-5.51
Varnish	3,770	0.07	3,669	0.06	3.25
GSHD	3,710	0.06	4,322	0.07	-13.75
Flywheel	3,563	0.06	3,346	0.06	7.00
IBM_HTTP_Server	3,210	0.06	3,311	0.06	-2.58
AmazonS3	3,094	0.05	3,078	0.05	1.01
kangle	3,069	0.05	2,705	0.05	14.00
EZproxy	2,612	0.05	2,592	0.04	1.26
Resin	2,555	0.04	2,610	0.05	-1.63
Zope	2,371	0.04	2,395	0.04	-0.52
openresty	2,294	0.04	2,160	0.04	6.72
-	2,267	0.04	2,313	0.04	-1.52
XiakeWeb	2,212	0.04	1,088	0.02	104.29
Oracle-Application-Server-10g	1,822	0.03	1,877	0.03	-2.46
WDaemon	1,594	0.03	1,605	0.03	-0.21
CloudFront	1,478	0.03	1,652	0.03	-10.10
Web	1,440	0.03	1,455	0.03	-0.55
xServers	1,368	0.02	961	0.02	43.04
IceWarp	1,284	0.02	1,297	0.02	-0.52
GlassFish	1,273	0.02	1,260	0.02	1.52
III	1,146	0.02	1,147	0.02	0.40
Cougar	1,108	0.02	1,136	0.02	-1.99
Rumpus	979	0.02	959	0.02	2.58
Oracle-Application-Server-11g	954	0.02	981	0.02	-2.28
cpsrvd	935	0.02	941	0.02	-0.16
Pantheon	918	0.02	883	0.02	4.47
smartcds	896	0.02	919	0.02	-2.03
Sun-ONE-Web-Server	862	0.02	871	0.02	-0.56
YxlinkWAF	837	0.01	849	0.01	-0.94
Bomgar	822	0.01	819	0.01	0.85
thttpd	777	0.01	789	0.01	-1.05
Zeus	771	0.01	783	0.01	-1.06
Advanced	759	0.01	708	0.01	7.72
ScreenConnect	737	0.01	714	0.01	3.72
WebServer	728	0.01	736	0.01	-0.61
Boa	698	0.01	702	0.01	-0.09
ATS	661	0.01	652	0.01	1.87
PWS	650	0.01	701	0.01	-6.83
httpd	647	0.01	679	0.01	-4.25
Oracle	646	0.01	651	0.01	-0.29
*****************	629	0.01	608	0.01	3.95
CommuniGatePro	626	0.01	628	0.01	0.16
Sun	625	0.01	614	0.01	2.28
EdgePrism	607	0.01	633	0.01	-3.64
GSYQ	592	0.01	562	0.01	5.85
Cherokee	553	0.01	583	0.01	-4.69
kisa	510	0.01	503	0.01	1.88
redir-httpd	507	0.01	508	0.01	0.28
Oracle-iPlanet-Web-Server	500	0.01	498	0.01	0.89
SonicWALL	488	0.01	483	0.01	1.52
Netscape-Enterprise	478	0.01	493	0.01	-2.57
GWS	476	0.01	487	0.01	-1.79
TWebAP	450	0.01	480	0.01	-5.80
Apache-AdvancedExtranetServer	443	0.01	445	0.01	0.03
Server	441	0.01	453	0.01	-2.18
Icecast	421	0.01	418	0.01	1.20
Google	417	0.01	419	0.01	0.00
FlashCom	402	0.01	431	0.01	-6.28
Sun-Java-System-Web-Server	399	0.01	401	0.01	-0.02
Jetty	395	0.01	400	0.01	-0.77
ngx_openresty	392	0.01	390	0.01	1.00
Unknown	389	0.01	395	0.01	-1.04
Abyss	382	0.01	380	0.01	1.01
WowzaStreamingEngine	381	0.01	369	0.01	3.75
gunicorn	374	0.01	383	0.01	-1.88
WS	363	0.01	392	0.01	-6.95
QRATOR	349	0.01	332	0.01	5.63
Nginx-VPSSIM	348	0.01	323	0.01	8.26
SAP	338	0.01	342	0.01	-0.69
ghs	327	0.01	332	0.01	-1.03
OpenCms	326	0.01	325	0.01	0.79
cc-web	321	0.01	316	0.01	2.07
WebServerX	319	0.01	331	0.01	-3.16
unknown	299	0.01	298	0.01	0.82
WcsFlare	298	0.01	0	0.00	N/A
NOYB	294	0.01	304	0.01	-2.82
HTTP	294	0.01	298	0.01	-0.87
Footprint	282	0.00	0	0.00	N/A
AnWeb	278	0.00	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.