You are viewing an outdated report.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) 76,011,276 hostnames, but only 5,713,487 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	November 2015 Count	November 2015 %	October 2015 Count	October 2015 %	Growth %
Apache	3,010,929	52.70	3,020,940	52.59	0.21
Microsoft-IIS	922,462	16.15	947,332	16.49	-2.10
nginx	662,292	11.59	652,336	11.36	2.08
null	443,088	7.76	447,842	7.80	-0.52
Microsoft-HTTPAPI	196,049	3.43	197,260	3.43	-0.07
Apache-Coyote	63,264	1.11	63,303	1.10	0.48
cloudflare-nginx	62,816	1.10	67,269	1.17	-6.11
IdeaWebServer	57,048	1.00	56,904	0.99	0.80
LiteSpeed	38,485	0.67	37,220	0.65	3.96
IIS	19,621	0.34	19,437	0.34	1.50
BigIP	19,244	0.34	18,833	0.33	2.74
lighttpd	15,314	0.27	15,515	0.27	-0.76
AkamaiGHost	11,193	0.20	10,591	0.18	6.26
squid	10,523	0.18	10,582	0.18	-0.02
A	9,462	0.17	9,591	0.17	-0.81
Lotus-Domino	7,085	0.12	7,108	0.12	0.22
Rapidsite	6,995	0.12	7,184	0.13	-2.10
Tengine	6,220	0.11	6,139	0.11	1.87
Cowboy	5,539	0.10	5,193	0.09	7.24
WWW	5,513	0.10	5,221	0.09	6.17
sffe	4,749	0.08	4,350	0.08	9.77
Safedog	4,329	0.08	4,517	0.08	-3.64
Flywheel	3,806	0.07	3,563	0.06	7.40
Varnish	3,800	0.07	3,770	0.07	1.34
AmazonS3	3,379	0.06	3,094	0.05	9.81
IBM_HTTP_Server	3,092	0.05	3,210	0.06	-3.15
kangle	2,951	0.05	3,069	0.05	-3.32
GSHD	2,906	0.05	3,710	0.06	-21.24
EZproxy	2,636	0.05	2,612	0.05	1.47
Resin	2,575	0.05	2,555	0.04	1.33
-	2,526	0.04	2,267	0.04	12.03
XiakeWeb	2,412	0.04	2,212	0.04	9.64
openresty	2,392	0.04	2,294	0.04	4.84
Zope	2,350	0.04	2,371	0.04	-0.35
CloudFront	1,960	0.03	1,478	0.03	33.33
Oracle-Application-Server-10g	1,792	0.03	1,822	0.03	-1.11
WDaemon	1,587	0.03	1,594	0.03	0.10
Web	1,403	0.02	1,440	0.03	-2.04
xServers	1,382	0.02	1,368	0.02	1.57
GlassFish	1,308	0.02	1,273	0.02	3.31
IceWarp	1,281	0.02	1,284	0.02	0.31
III	1,143	0.02	1,146	0.02	0.28
Cougar	1,092	0.02	1,108	0.02	-0.91
Rumpus	980	0.02	979	0.02	0.65
Pantheon	969	0.02	918	0.02	6.13
cpsrvd	949	0.02	935	0.02	2.05
Oracle-Application-Server-11g	943	0.02	954	0.02	-0.62
smartcds	919	0.02	896	0.02	3.13
Sun-ONE-Web-Server	850	0.01	862	0.02	-0.86
Bomgar	823	0.01	822	0.01	0.67
YxlinkWAF	788	0.01	837	0.01	-5.34
GSYQ	774	0.01	592	0.01	31.45
ScreenConnect	769	0.01	737	0.01	4.91
thttpd	761	0.01	777	0.01	-1.53
WebServer	737	0.01	728	0.01	1.79
Boa	699	0.01	698	0.01	0.69
Advanced	694	0.01	759	0.01	-8.07
PWS	684	0.01	650	0.01	5.80
ATS	664	0.01	661	0.01	1.00
httpd	661	0.01	647	0.01	2.72
Oracle	657	0.01	646	0.01	2.26
EdgePrism	656	0.01	607	0.01	8.66
Zeus	653	0.01	771	0.01	-14.84
*****************	647	0.01	629	0.01	3.42
NetBox	613	0.01	0	0.00	N/A
CommuniGatePro	611	0.01	626	0.01	-1.86
Sun	595	0.01	625	0.01	-4.28
Cherokee	545	0.01	553	0.01	-0.91
kisa	516	0.01	510	0.01	1.73
redir-httpd	507	0.01	507	0.01	0.54
Oracle-iPlanet-Web-Server	483	0.01	500	0.01	-2.87
SonicWALL	482	0.01	488	0.01	-0.69
Netscape-Enterprise	462	0.01	478	0.01	-2.82
Icecast	455	0.01	421	0.01	8.66
GWS	452	0.01	476	0.01	-4.53
Server	448	0.01	441	0.01	2.14
Apache-AdvancedExtranetServer	436	0.01	443	0.01	-1.04
TWebAP	430	0.01	450	0.01	-3.92
Google	413	0.01	417	0.01	-0.42
FlashCom	392	0.01	402	0.01	-1.96
gunicorn	391	0.01	374	0.01	5.11
WowzaStreamingEngine	391	0.01	381	0.01	3.18
ngx_openresty	389	0.01	392	0.01	-0.23
Jetty	387	0.01	395	0.01	-1.49
Sun-Java-System-Web-Server	386	0.01	399	0.01	-2.73
Abyss	380	0.01	382	0.01	0.02
Nginx-VPSSIM	379	0.01	348	0.01	9.50
QRATOR	365	0.01	349	0.01	5.15
yunjiasu-nginx	363	0.01	0	0.00	N/A
Unknown	363	0.01	389	0.01	-6.18
WS	351	0.01	363	0.01	-2.78
SAP	340	0.01	338	0.01	1.14
ghs	338	0.01	327	0.01	3.93
OpenCms	334	0.01	326	0.01	3.01
cc-web	332	0.01	321	0.01	3.99
NginxPlus	326	0.01	0	0.00	N/A
WebServerX	309	0.01	319	0.01	-2.61
unknown	306	0.01	299	0.01	2.90
NOYB	294	0.01	294	0.01	0.54
HTTP	294	0.01	294	0.01	0.54

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.