You are viewing an outdated report.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) 72,634,567 hostnames, but only 5,627,978 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	May 2014 Count	May 2014 %	April 2014 Count	April 2014 %	Growth %
Apache	3,120,755	55.45	3,128,287	55.62	-0.30
Microsoft-IIS	1,027,952	18.27	1,032,901	18.36	-0.54
nginx	460,897	8.19	449,211	7.99	2.54
null	455,584	8.09	456,995	8.13	-0.37
Microsoft-HTTPAPI	146,105	2.60	143,057	2.54	2.07
Apache-Coyote	61,940	1.10	61,695	1.10	0.33
IdeaWebServer	55,419	0.98	55,158	0.98	0.41
IIS	34,326	0.61	35,540	0.63	-3.48
LiteSpeed	31,004	0.55	30,677	0.55	1.00
lighttpd	18,688	0.33	18,534	0.33	0.77
Rapidsite	17,978	0.32	18,737	0.33	-4.11
BigIP	13,875	0.25	13,492	0.24	2.77
A	11,139	0.20	11,363	0.20	-2.03
squid	10,569	0.19	10,661	0.19	-0.93
cloudflare-nginx	9,118	0.16	8,658	0.15	5.25
Lotus-Domino	8,930	0.16	9,019	0.16	-1.05
AkamaiGHost	7,388	0.13	5,460	0.10	35.22
IBM_HTTP_Server	5,212	0.09	5,333	0.09	-2.33
HTTPD	4,800	0.09	4,714	0.08	1.76
MochiWeb	3,482	0.06	3,350	0.06	3.87
Tengine	3,030	0.05	2,778	0.05	9.00
Zope	2,894	0.05	2,898	0.05	-0.20
Resin	2,789	0.05	2,803	0.05	-0.56
Oracle-Application-Server-10g	2,750	0.05	2,757	0.05	-0.32
Varnish	2,570	0.05	2,483	0.04	3.44
kangle	2,429	0.04	2,386	0.04	1.74
EZproxy	2,415	0.04	2,411	0.04	0.10
-	2,267	0.04	2,341	0.04	-3.22
WP	2,057	0.04	1,934	0.03	6.29
WDaemon	1,761	0.03	1,771	0.03	-0.63
Cougar	1,660	0.03	1,690	0.03	-1.84
Web	1,547	0.03	1,528	0.03	1.18
IceWarp	1,430	0.03	1,416	0.03	0.92
xServers	1,376	0.02	1,430	0.03	-3.84
Zeus	1,358	0.02	1,378	0.02	-1.51
Sun-ONE-Web-Server	1,272	0.02	1,306	0.02	-2.67
III	1,198	0.02	1,204	0.02	-0.56
AmazonS3	1,119	0.02	994	0.02	12.50
Safedog	1,114	0.02	691	0.01	61.11
GlassFish	1,113	0.02	1,090	0.02	2.04
Rumpus	1,046	0.02	1,038	0.02	0.71
openresty	1,031	0.02	991	0.02	3.97
FC	943	0.02	931	0.02	1.22
thttpd	941	0.02	976	0.02	-3.65
cpsrvd	928	0.02	925	0.02	0.26
Oracle-Application-Server-11g	908	0.02	888	0.02	2.19
sffe	891	0.02	941	0.02	-5.37
Flywheel	880	0.02	754	0.01	16.64
Bomgar	867	0.02	868	0.02	-0.18
Boa	867	0.02	876	0.02	-1.09
smartcds	840	0.01	802	0.01	4.67
Cherokee	837	0.01	857	0.02	-2.40
Netscape-Enterprise	798	0.01	820	0.01	-2.75
GWS	785	0.01	802	0.01	-2.18
Kucci	779	0.01	0	0.00	N/A
Sun	766	0.01	779	0.01	-1.73
httpd	740	0.01	746	0.01	-0.87
Oracle	738	0.01	750	0.01	-1.66
EdgePrism	733	0.01	721	0.01	1.60
CommuniGatePro	712	0.01	727	0.01	-2.13
WebServer	686	0.01	689	0.01	-0.50
Apache-AdvancedExtranetServer	623	0.01	643	0.01	-3.17
ngx_openresty	616	0.01	612	0.01	0.59
FlashCom	613	0.01	612	0.01	0.10
Sun-Java-System-Web-Server	610	0.01	635	0.01	-4.00
WWW	603	0.01	597	0.01	0.94
Demandware	557	0.01	544	0.01	2.32
CloudFront	556	0.01	455	0.01	22.12
PWS	551	0.01	521	0.01	5.69
*****************	548	0.01	577	0.01	-5.09
Jetty	547	0.01	548	0.01	-0.25
Oracle-iPlanet-Web-Server	475	0.01	465	0.01	2.09
maged	446	0.01	436	0.01	2.23
SonicWALL	439	0.01	428	0.01	2.50
NOYB	437	0.01	462	0.01	-5.47
AnWeb	424	0.01	444	0.01	-4.57
Abyss	420	0.01	438	0.01	-4.17
Google	412	0.01	413	0.01	-0.31
Server	411	0.01	418	0.01	-1.74
kisa	408	0.01	401	0.01	1.68
ScreenConnect	397	0.01	375	0.01	5.80
WebtoB	393	0.01	406	0.01	-3.26
WebServerX	385	0.01	375	0.01	2.60
ASERVER	385	0.01	380	0.01	1.25
ATS	384	0.01	359	0.01	6.90
SAP	377	0.01	385	0.01	-2.14
HTTP	377	0.01	387	0.01	-2.65
TWebAP	365	0.01	338	0.01	7.92
WS	364	0.01	354	0.01	2.76
redir-httpd	338	0.01	513	0.01	-34.16
gunicorn	332	0.01	314	0.01	5.66
WebSphere	331	0.01	325	0.01	1.78
OpenCms	326	0.01	332	0.01	-1.87
Unknown	323	0.01	0	0.00	N/A
Ipswitch-IMail	317	0.01	350	0.01	-9.49
ListManagerWeb	310	0.01	313	0.01	-1.02
Pantheon	309	0.01	288	0.01	7.22
ApacheBooster	307	0.01	341	0.01	-10.03
AOLserver	303	0.01	306	0.01	-1.04
FileMakerPro	298	0.01	308	0.01	-3.31

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.