You are viewing an outdated report.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) 66,557,993 hostnames, but only 5,329,627 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 2013 Count	May 2013 %	April 2013 Count	April 2013 %	Growth %
Apache	3,091,897	58.01	3,062,861	58.16	-0.25
Microsoft-IIS	1,029,764	19.32	1,020,784	19.38	-0.32
null	433,530	8.13	423,689	8.05	1.11
nginx	296,050	5.55	285,718	5.43	2.39
Microsoft-HTTPAPI	114,028	2.14	111,168	2.11	1.36
Apache-Coyote	56,739	1.06	55,647	1.06	0.75
IdeaWebServer	49,546	0.93	48,963	0.93	-0.01
LiteSpeed	27,203	0.51	26,895	0.51	-0.06
Rapidsite	26,144	0.49	26,562	0.50	-2.74
lighttpd	20,600	0.39	20,591	0.39	-1.14
A	12,627	0.24	12,833	0.24	-2.77
AkamaiGHost	10,925	0.20	10,720	0.20	0.70
BigIP	10,669	0.20	10,663	0.20	-1.13
Lotus-Domino	9,922	0.19	9,937	0.19	-1.34
squid	8,142	0.15	7,684	0.15	4.70
IBM_HTTP_Server	6,467	0.12	6,504	0.12	-1.75
cloudflare-nginx	6,207	0.12	5,437	0.10	12.81
HTTPD	3,780	0.07	3,697	0.07	1.03
Zope	3,185	0.06	3,217	0.06	-2.17
Oracle-Application-Server-10g	3,164	0.06	3,223	0.06	-3.00
Resin	2,945	0.06	2,954	0.06	-1.49
EZproxy	2,176	0.04	2,158	0.04	-0.36
Cougar	1,911	0.04	1,910	0.04	-1.14
-	1,907	0.04	1,894	0.04	-0.51
Varnish	1,882	0.04	1,815	0.03	2.46
WDaemon	1,788	0.03	1,762	0.03	0.27
Zeus	1,733	0.03	1,791	0.03	-4.39
Sun-ONE-Web-Server	1,714	0.03	1,752	0.03	-3.33
Web	1,592	0.03	1,614	0.03	-2.53
Tengine	1,581	0.03	1,517	0.03	2.98
MochiWeb	1,556	0.03	1,393	0.03	10.38
xServers	1,517	0.03	1,479	0.03	1.35
IceWarp	1,500	0.03	1,517	0.03	-2.29
kangle	1,406	0.03	1,366	0.03	1.71
III	1,203	0.02	1,194	0.02	-0.44
Netscape-Enterprise	1,189	0.02	1,239	0.02	-5.17
sffe	1,087	0.02	1,002	0.02	7.20
GWS	1,077	0.02	1,105	0.02	-3.69
IIS	1,035	0.02	0	0.00	N/A
Cherokee	1,015	0.02	1,046	0.02	-4.12
thttpd	1,010	0.02	1,006	0.02	-0.79
Rumpus	978	0.02	943	0.02	2.48
Boa	933	0.02	933	0.02	-1.19
cpsrvd	911	0.02	916	0.02	-1.73
Oracle	900	0.02	912	0.02	-2.49
GlassFish	844	0.02	819	0.02	1.83
Apache-AdvancedExtranetServer	823	0.02	833	0.02	-2.37
Sun-Java-System-Web-Server	814	0.02	818	0.02	-1.67
Bomgar	788	0.01	779	0.01	-0.05
FC	784	0.01	767	0.01	1.00
httpd	783	0.01	769	0.01	0.61
CommuniGatePro	775	0.01	776	0.01	-1.31
WP	771	0.01	710	0.01	7.30
Sun	762	0.01	752	0.01	0.13
Jetty	738	0.01	741	0.01	-1.59
Oracle-Application-Server-11g	700	0.01	665	0.01	4.01
WebServer	649	0.01	658	0.01	-2.54
smartcds	647	0.01	625	0.01	2.29
WWW	626	0.01	627	0.01	-1.34
AnWeb	584	0.01	547	0.01	5.50
ApacheBooster	575	0.01	555	0.01	2.37
Server	560	0.01	548	0.01	0.98
NOYB	520	0.01	549	0.01	-6.41
redir-httpd	515	0.01	515	0.01	-1.19
WebServerX	505	0.01	515	0.01	-3.11
FlashCom	463	0.01	427	0.01	7.14
EdgePrism	454	0.01	412	0.01	8.89
PWS	451	0.01	422	0.01	5.60
WebtoB	439	0.01	456	0.01	-4.87
Abyss	433	0.01	429	0.01	-0.27
ListManagerWeb	423	0.01	426	0.01	-1.88
ASERVER	416	0.01	296	0.01	38.87
Ipswitch-IMail	411	0.01	415	0.01	-2.14
Demandware	409	0.01	402	0.01	0.53
Oracle-iPlanet-Web-Server	406	0.01	402	0.01	-0.20
IBM_HTTP_SERVER	387	0.01	401	0.01	-4.64
HTTP	383	0.01	367	0.01	3.12
SAP	372	0.01	365	0.01	0.71
AOLserver	371	0.01	373	0.01	-1.72
Unknown	370	0.01	383	0.01	-4.54
*****************	368	0.01	390	0.01	-6.76
DinaHTTPd	365	0.01	368	0.01	-1.99
FileMakerPro	361	0.01	370	0.01	-3.59
ATS	359	0.01	407	0.01	-12.84
WebSphere	355	0.01	357	0.01	-1.74
4D_WebStar_D	349	0.01	357	0.01	-3.40
WS	325	0.01	318	0.01	0.99
AmazonS3	322	0.01	331	0.01	-3.87
SonicWALL	321	0.01	312	0.01	1.66
Google	316	0.01	310	0.01	0.73
maged	309	0.01	295	0.01	3.50
WebSTAR	306	0.01	317	0.01	-4.62
OpenCms	302	0.01	299	0.01	-0.20
Indy	302	0.01	298	0.01	0.14
ngx_openresty	300	0.01	299	0.01	-0.86
WebLogic	299	0.01	297	0.01	-0.52
WebSite	276	0.01	279	0.01	-2.25
Roxen	272	0.01	273	0.01	-1.55
RomPager	271	0.01	272	0.01	-1.55
eYouWS	261	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.