You are viewing an outdated report.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) 60,214,897 hostnames, but only 4,920,828 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	April 2012 Count	April 2012 %	March 2012 Count	March 2012 %	Growth %
Apache	2,915,637	59.25	2,890,481	59.19	0.10
Microsoft-IIS	1,011,793	20.56	1,011,255	20.71	-0.71
null	383,154	7.79	382,898	7.84	-0.70
nginx	198,238	4.03	190,679	3.90	3.17
Microsoft-HTTPAPI	77,947	1.58	74,330	1.52	4.06
Apache-Coyote	50,426	1.02	49,902	1.02	0.28
IdeaWebServer	42,705	0.87	42,165	0.86	0.51
Rapidsite	33,776	0.69	34,850	0.71	-3.82
lighttpd	20,934	0.43	20,859	0.43	-0.41
LiteSpeed	20,884	0.42	20,267	0.42	2.26
A	14,591	0.30	14,733	0.30	-1.72
Lotus-Domino	10,887	0.22	10,891	0.22	-0.80
squid	7,808	0.16	6,209	0.13	24.79
BigIP	7,679	0.16	7,631	0.16	-0.14
IBM_HTTP_Server	6,719	0.14	6,710	0.14	-0.63
AkamaiGHost	4,362	0.09	6,970	0.14	-37.90
Oracle-Application-Server-10g	3,642	0.07	3,677	0.08	-1.71
Zope	3,622	0.07	3,638	0.07	-1.20
Resin	3,170	0.06	3,179	0.07	-1.05
HTTPD	2,731	0.06	2,651	0.05	2.23
Zeus	2,175	0.04	2,204	0.05	-2.07
Sun-ONE-Web-Server	2,166	0.04	2,202	0.05	-2.39
Cougar	2,163	0.04	2,265	0.05	-5.23
EZproxy	1,909	0.04	1,887	0.04	0.39
WDaemon	1,734	0.04	1,685	0.03	2.12
Netscape-Enterprise	1,729	0.04	1,777	0.04	-3.45
IceWarp	1,577	0.03	1,576	0.03	-0.70
Web	1,515	0.03	1,539	0.03	-2.31
GWS	1,348	0.03	1,362	0.03	-1.79
-	1,304	0.03	1,221	0.03	5.98
cloudflare-nginx	1,303	0.03	1,219	0.02	6.07
Varnish	1,259	0.03	1,240	0.03	0.75
III	1,195	0.02	1,189	0.02	-0.27
Cherokee	1,183	0.02	1,188	0.02	-1.18
Apachenginx	1,171	0.02	1,162	0.02	0.00
apache	1,107	0.02	1,088	0.02	0.97
thttpd	1,099	0.02	1,097	0.02	-0.58
Apache-AdvancedExtranetServer	1,076	0.02	1,093	0.02	-2.31
Sun-Java-System-Web-Server	1,017	0.02	1,034	0.02	-2.40
Boa	1,014	0.02	1,008	0.02	-0.18
Oracle	1,004	0.02	1,011	0.02	-1.45
xServers	995	0.02	946	0.02	4.37
httpd	949	0.02	939	0.02	0.29
cpsrvd	915	0.02	903	0.02	0.55
CommuniGatePro	863	0.02	869	0.02	-1.45
Jetty	852	0.02	864	0.02	-2.14
Rumpus	790	0.02	780	0.02	0.51
Sun	780	0.02	783	0.02	-1.15
Nginx	749	0.02	748	0.02	-0.63
sffe	734	0.01	668	0.01	9.04
WWW	716	0.01	729	0.01	-2.54
AnWeb	666	0.01	692	0.01	-4.49
Bomgar	664	0.01	661	0.01	-0.32
WebServerX	660	0.01	670	0.01	-2.25
NOYB	650	0.01	648	0.01	-0.46
ListManagerWeb	599	0.01	593	0.01	0.24
Ipswitch-IMail	556	0.01	560	0.01	-1.47
WebtoB	554	0.01	556	0.01	-1.12
IBM_HTTP_SERVER	544	0.01	555	0.01	-2.73
GlassFish	529	0.01	513	0.01	2.33
BIG-IP	526	0.01	514	0.01	1.55
redir-httpd	512	0.01	513	0.01	-0.96
Server	496	0.01	520	0.01	-5.35
4D_WebStar_D	486	0.01	501	0.01	-3.74
FileMakerPro	465	0.01	466	0.01	-0.98
Tengine	455	0.01	334	0.01	35.18
DinaHTTPd	429	0.01	431	0.01	-1.23
EdgePrism	426	0.01	406	0.01	4.12
FC	409	0.01	362	0.01	12.12
AOLserver	409	0.01	408	0.01	-0.52
Abyss	405	0.01	408	0.01	-1.50
kangle	401	0.01	339	0.01	17.38
WebServer	400	0.01	412	0.01	-3.66
WebSTAR	397	0.01	409	0.01	-3.68
WebLogic	378	0.01	397	0.01	-5.52
WebSphere	363	0.01	366	0.01	-1.58
Oracle-iPlanet-Web-Server	355	0.01	331	0.01	6.43
Oracle-Application-Server-11g	355	0.01	330	0.01	6.75
Unknown	338	0.01	347	0.01	-3.34
SAP	323	0.01	316	0.01	1.43
Indy	322	0.01	328	0.01	-2.58
WebSite	318	0.01	344	0.01	-8.27
WebSitePro	314	0.01	325	0.01	-4.12
TWS	313	0.01	302	0.01	2.85
OpenCms	311	0.01	306	0.01	0.86
JRun	309	0.01	310	0.01	-1.09
RomPager	308	0.01	312	0.01	-2.04
HTTP	307	0.01	283	0.01	7.65
Secured	306	0.01	302	0.01	0.55
PowerSchool	306	0.01	344	0.01	-11.73
Demandware	289	0.01	279	0.01	2.79
Roxen	283	0.01	285	0.01	-1.46
Power	271	0.01	243	0.00	10.67
SW	269	0.01	243	0.00	9.85
IIS	267	0.01	274	0.01	-3.30
WS	265	0.01	262	0.01	0.37
CloudFront	262	0.01	278	0.01	-6.48
PWS	255	0.01	273	0.01	-7.31
4D_WebSTAR_S	242	0.00	261	0.01	-7.99
""	234	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.