You are viewing an outdated report.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) 70,404,179 hostnames, but only 5,545,635 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 2013 Count	November 2013 %	October 2013 Count	October 2013 %	Growth %
Apache	3,170,304	57.17	3,170,004	57.39	-0.38
Microsoft-IIS	1,038,865	18.73	1,035,696	18.75	-0.09
null	440,750	7.95	438,423	7.94	0.14
nginx	357,865	6.45	346,844	6.28	2.77
Microsoft-HTTPAPI	129,904	2.34	127,727	2.31	1.31
Apache-Coyote	59,950	1.08	59,495	1.08	0.37
IdeaWebServer	53,189	0.96	52,627	0.95	0.67
IIS	33,701	0.61	31,677	0.57	5.97
LiteSpeed	28,739	0.52	28,332	0.51	1.04
Rapidsite	22,771	0.41	23,463	0.42	-3.33
lighttpd	21,150	0.38	20,971	0.38	0.46
BigIP	12,327	0.22	12,034	0.22	2.03
A	11,901	0.21	12,026	0.22	-1.43
squid	9,707	0.18	9,385	0.17	3.02
Lotus-Domino	9,466	0.17	9,583	0.17	-1.61
cloudflare-nginx	6,975	0.13	6,565	0.12	5.83
AkamaiGHost	6,366	0.11	7,547	0.14	-15.98
IBM_HTTP_Server	5,882	0.11	6,058	0.11	-3.29
HTTPD	4,256	0.08	4,173	0.08	1.59
Zope	3,049	0.05	3,085	0.06	-1.55
Oracle-Application-Server-10g	2,952	0.05	2,977	0.05	-1.23
Resin	2,864	0.05	2,882	0.05	-1.01
MochiWeb	2,587	0.05	2,385	0.04	8.04
Varnish	2,393	0.04	2,401	0.04	-0.72
EZproxy	2,310	0.04	2,280	0.04	0.92
-	2,279	0.04	2,259	0.04	0.49
Tengine	2,016	0.04	1,894	0.03	6.02
WDaemon	1,776	0.03	1,780	0.03	-0.62
Cougar	1,758	0.03	1,793	0.03	-2.34
kangle	1,698	0.03	1,761	0.03	-3.96
Web	1,647	0.03	1,626	0.03	0.89
Zeus	1,618	0.03	1,623	0.03	-0.70
IceWarp	1,487	0.03	1,481	0.03	0.01
Sun-ONE-Web-Server	1,476	0.03	1,524	0.03	-3.53
xServers	1,416	0.03	1,579	0.03	-10.68
ngx_openresty	1,407	0.03	1,403	0.03	-0.11
sffe	1,288	0.02	1,027	0.02	24.92
ApacheBooster	1,208	0.02	1,208	0.02	-0.39
III	1,164	0.02	1,184	0.02	-2.08
WP	1,163	0.02	1,099	0.02	5.41
thttpd	1,007	0.02	995	0.02	0.81
Rumpus	1,001	0.02	1,012	0.02	-1.48
GlassFish	988	0.02	958	0.02	2.73
Netscape-Enterprise	972	0.02	994	0.02	-2.60
Safedog	946	0.02	746	0.01	26.31
GWS	940	0.02	962	0.02	-2.67
FC	931	0.02	857	0.02	8.21
Cherokee	930	0.02	943	0.02	-1.77
Boa	892	0.02	918	0.02	-3.21
cpsrvd	875	0.02	901	0.02	-3.27
Bomgar	821	0.01	826	0.01	-1.00
Oracle-Application-Server-11g	817	0.01	793	0.01	2.62
Oracle	758	0.01	759	0.01	-0.52
Sun	755	0.01	772	0.01	-2.59
CommuniGatePro	742	0.01	749	0.01	-1.32
Sun-Java-System-Web-Server	740	0.01	751	0.01	-1.85
httpd	737	0.01	736	0.01	-0.26
ASERVER	731	0.01	577	0.01	26.19
Apache-AdvancedExtranetServer	707	0.01	725	0.01	-2.87
WebServer	651	0.01	651	0.01	-0.39
smartcds	648	0.01	696	0.01	-7.26
EdgePrism	627	0.01	604	0.01	3.40
CloudFront	626	0.01	807	0.01	-22.73
WWW	615	0.01	631	0.01	-2.92
Jetty	602	0.01	622	0.01	-3.60
Server	589	0.01	572	0.01	2.57
FlashCom	550	0.01	510	0.01	7.42
redir-httpd	514	0.01	514	0.01	-0.39
AmazonS3	496	0.01	477	0.01	3.57
AnWeb	493	0.01	493	0.01	-0.39
Demandware	487	0.01	461	0.01	5.23
PWS	486	0.01	435	0.01	11.29
Oracle-iPlanet-Web-Server	472	0.01	454	0.01	3.56
NOYB	470	0.01	484	0.01	-3.27
WebtoB	446	0.01	435	0.01	2.13
Abyss	434	0.01	436	0.01	-0.85
*****************	432	0.01	388	0.01	10.90
WebServerX	416	0.01	412	0.01	0.57
SonicWALL	396	0.01	377	0.01	4.63
HTTP	384	0.01	402	0.01	-4.85
maged	379	0.01	365	0.01	3.43
Ipswitch-IMail	376	0.01	386	0.01	-2.97
Google	375	0.01	366	0.01	2.06
SAP	370	0.01	371	0.01	-0.66
kisa	368	0.01	358	0.01	2.39
Unknown	354	0.01	392	0.01	-10.05
ListManagerWeb	352	0.01	361	0.01	-2.88
WebSphere	351	0.01	353	0.01	-0.96
IBM_HTTP_SERVER	336	0.01	344	0.01	-2.71
WS	335	0.01	339	0.01	-1.57
FileMakerPro	333	0.01	338	0.01	-1.87
AOLserver	331	0.01	335	0.01	-1.58
OpenCms	311	0.01	312	0.01	-0.71
Indy	294	0.01	311	0.01	-5.84
DinaHTTPd	292	0.01	304	0.01	-4.32
4D_WebStar_D	288	0.01	304	0.01	-5.64
RomPager	286	0.01	281	0.01	1.38
ScreenConnect	281	0.01	0	0.00	N/A
TWebAP	278	0.01	272	0.00	1.80
gunicorn	275	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.