You are viewing an outdated report.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) 70,926,576 hostnames, but only 5,553,171 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	December 2013 Count	December 2013 %	November 2013 Count	November 2013 %	Growth %
Apache	3,170,683	57.10	3,170,304	57.17	-0.12
Microsoft-IIS	1,031,462	18.57	1,038,865	18.73	-0.85
null	446,550	8.04	440,750	7.95	1.18
nginx	369,368	6.65	357,865	6.45	3.07
Microsoft-HTTPAPI	131,798	2.37	129,904	2.34	1.32
Apache-Coyote	59,413	1.07	59,950	1.08	-1.03
IdeaWebServer	53,770	0.97	53,189	0.96	0.96
IIS	30,694	0.55	33,701	0.61	-9.05
LiteSpeed	29,466	0.53	28,739	0.52	2.39
Rapidsite	22,205	0.40	22,771	0.41	-2.62
lighttpd	20,993	0.38	21,150	0.38	-0.88
BigIP	12,595	0.23	12,327	0.22	2.04
A	11,808	0.21	11,901	0.21	-0.92
squid	9,758	0.18	9,707	0.18	0.39
Lotus-Domino	9,333	0.17	9,466	0.17	-1.54
cloudflare-nginx	6,969	0.13	6,975	0.13	-0.22
IBM_HTTP_Server	5,692	0.10	5,882	0.11	-3.36
AkamaiGHost	4,749	0.09	6,366	0.11	-25.50
HTTPD	4,367	0.08	4,256	0.08	2.47
Zope	2,963	0.05	3,049	0.05	-2.95
Oracle-Application-Server-10g	2,888	0.05	2,952	0.05	-2.30
Resin	2,873	0.05	2,864	0.05	0.18
MochiWeb	2,789	0.05	2,587	0.05	7.66
Tengine	2,496	0.04	2,016	0.04	23.64
Varnish	2,346	0.04	2,393	0.04	-2.10
EZproxy	2,313	0.04	2,310	0.04	-0.01
-	2,253	0.04	2,279	0.04	-1.28
WDaemon	1,759	0.03	1,776	0.03	-1.09
kangle	1,755	0.03	1,698	0.03	3.22
Cougar	1,724	0.03	1,758	0.03	-2.07
Web	1,644	0.03	1,647	0.03	-0.32
Zeus	1,542	0.03	1,618	0.03	-4.83
IceWarp	1,458	0.03	1,487	0.03	-2.08
ngx_openresty	1,451	0.03	1,407	0.03	2.99
Sun-ONE-Web-Server	1,439	0.03	1,476	0.03	-2.64
xServers	1,410	0.03	1,416	0.03	-0.56
sffe	1,299	0.02	1,288	0.02	0.72
WP	1,259	0.02	1,163	0.02	8.11
III	1,168	0.02	1,164	0.02	0.21
GlassFish	1,014	0.02	988	0.02	2.49
thttpd	997	0.02	1,007	0.02	-1.13
Rumpus	972	0.02	1,001	0.02	-3.03
Netscape-Enterprise	943	0.02	972	0.02	-3.12
GWS	910	0.02	940	0.02	-3.32
FC	899	0.02	931	0.02	-3.57
Cherokee	892	0.02	930	0.02	-4.22
Boa	892	0.02	892	0.02	-0.14
cpsrvd	882	0.02	875	0.02	0.66
Oracle-Application-Server-11g	838	0.02	817	0.01	2.43
Bomgar	830	0.01	821	0.01	0.96
ApacheBooster	811	0.01	1,208	0.02	-32.96
Oracle	759	0.01	758	0.01	-0.00
Sun	754	0.01	755	0.01	-0.27
CommuniGatePro	737	0.01	742	0.01	-0.81
Sun-Java-System-Web-Server	735	0.01	740	0.01	-0.81
httpd	729	0.01	737	0.01	-1.22
Safedog	729	0.01	946	0.02	-23.04
Apache-AdvancedExtranetServer	691	0.01	707	0.01	-2.40
WebServer	690	0.01	651	0.01	5.85
ASERVER	661	0.01	731	0.01	-9.70
EdgePrism	655	0.01	627	0.01	4.32
smartcds	653	0.01	648	0.01	0.63
WWW	629	0.01	615	0.01	2.14
AmazonS3	602	0.01	496	0.01	21.21
CloudFront	600	0.01	626	0.01	-4.28
Jetty	562	0.01	602	0.01	-6.77
FlashCom	555	0.01	550	0.01	0.77
Server	535	0.01	589	0.01	-9.29
redir-httpd	513	0.01	514	0.01	-0.33
Demandware	497	0.01	487	0.01	1.91
NOYB	472	0.01	470	0.01	0.29
*****************	462	0.01	432	0.01	6.80
PWS	453	0.01	486	0.01	-6.92
AnWeb	443	0.01	493	0.01	-10.26
Oracle-iPlanet-Web-Server	439	0.01	472	0.01	-7.12
WebtoB	434	0.01	446	0.01	-2.82
Abyss	425	0.01	434	0.01	-2.21
WebServerX	418	0.01	416	0.01	0.34
SonicWALL	401	0.01	396	0.01	1.13
HTTP	390	0.01	384	0.01	1.42
maged	387	0.01	379	0.01	1.97
Google	380	0.01	375	0.01	1.20
SAP	375	0.01	370	0.01	1.21
kisa	373	0.01	368	0.01	1.22
Ipswitch-IMail	370	0.01	376	0.01	-1.73
WS	347	0.01	335	0.01	3.44
Flywheel	346	0.01	0	0.00	N/A
Unknown	345	0.01	354	0.01	-2.67
ListManagerWeb	341	0.01	352	0.01	-3.26
WebSphere	338	0.01	351	0.01	-3.83
IBM_HTTP_SERVER	328	0.01	336	0.01	-2.51
AOLserver	325	0.01	331	0.01	-1.95
FileMakerPro	323	0.01	333	0.01	-3.13
TWebAP	314	0.01	278	0.01	12.80
OpenCms	310	0.01	311	0.01	-0.46
Indy	300	0.01	294	0.01	1.90
ATS	293	0.01	0	0.00	N/A
gunicorn	291	0.01	275	0.00	5.67
ScreenConnect	289	0.01	281	0.01	2.71
DinaHTTPd	284	0.01	292	0.01	-2.87

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.