You are viewing an outdated report.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) 65,149,228 hostnames, but only 5,243,111 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	March 2013 Count	March 2013 %	February 2013 Count	February 2013 %	Growth %
Apache	3,062,655	58.41	3,055,899	58.59	-0.30
Microsoft-IIS	1,016,671	19.39	1,016,588	19.49	-0.51
null	425,428	8.11	416,109	7.98	1.71
nginx	275,391	5.25	266,528	5.11	2.79
Microsoft-HTTPAPI	108,482	2.07	105,683	2.03	2.12
Apache-Coyote	55,885	1.07	55,438	1.06	0.28
IdeaWebServer	48,422	0.92	47,896	0.92	0.57
Rapidsite	27,004	0.52	27,496	0.53	-2.30
LiteSpeed	26,963	0.51	26,763	0.51	0.23
lighttpd	20,819	0.40	21,117	0.40	-1.92
A	13,013	0.25	13,124	0.25	-1.36
BigIP	10,517	0.20	10,276	0.20	1.81
Lotus-Domino	10,074	0.19	10,174	0.20	-1.50
squid	7,298	0.14	7,182	0.14	1.09
IBM_HTTP_Server	6,608	0.13	6,592	0.13	-0.28
cloudflare-nginx	5,361	0.10	5,254	0.10	1.51
AkamaiGHost	4,301	0.08	5,716	0.11	-25.15
HTTPD	3,595	0.07	3,515	0.07	1.75
Zope	3,276	0.06	3,350	0.06	-2.72
Oracle-Application-Server-10g	3,236	0.06	3,269	0.06	-1.52
Resin	3,003	0.06	2,983	0.06	0.15
EZproxy	2,143	0.04	2,112	0.04	0.94
Cougar	1,928	0.04	1,957	0.04	-1.99
-	1,885	0.04	1,816	0.03	3.26
Zeus	1,795	0.03	1,828	0.04	-2.31
Sun-ONE-Web-Server	1,764	0.03	1,827	0.04	-3.95
Varnish	1,753	0.03	1,672	0.03	4.30
WDaemon	1,743	0.03	1,737	0.03	-0.17
Web	1,622	0.03	1,617	0.03	-0.21
IceWarp	1,532	0.03	1,554	0.03	-1.93
xServers	1,447	0.03	1,383	0.03	4.09
Tengine	1,392	0.03	1,350	0.03	2.58
kangle	1,362	0.03	1,347	0.03	0.59
MochiWeb	1,288	0.02	1,120	0.02	14.40
Netscape-Enterprise	1,284	0.02	1,334	0.03	-4.25
hosting	1,275	0.02	1,153	0.02	10.01
III	1,195	0.02	1,196	0.02	-0.60
GWS	1,108	0.02	1,125	0.02	-2.02
Cherokee	1,067	0.02	1,081	0.02	-1.81
thttpd	1,034	0.02	1,049	0.02	-1.94
Boa	953	0.02	950	0.02	-0.20
Nginx	947	0.02	946	0.02	-0.41
Rumpus	940	0.02	935	0.02	0.01
Oracle	917	0.02	919	0.02	-0.73
cpsrvd	910	0.02	901	0.02	0.48
sffe	849	0.02	957	0.02	-11.75
Apache-AdvancedExtranetServer	837	0.02	867	0.02	-3.96
Sun-Java-System-Web-Server	836	0.02	837	0.02	-0.64
httpd	796	0.02	809	0.02	-2.12
CommuniGatePro	793	0.02	801	0.02	-1.51
GlassFish	789	0.02	775	0.01	1.28
Bomgar	769	0.01	758	0.01	0.93
Sun	748	0.01	754	0.01	-1.31
FC	671	0.01	569	0.01	17.31
WebServer	664	0.01	649	0.01	1.78
Jetty	662	0.01	714	0.01	-7.76
WWW	640	0.01	638	0.01	-0.21
Oracle-Application-Server-11g	633	0.01	603	0.01	4.43
smartcds	608	0.01	562	0.01	7.62
AnWeb	595	0.01	595	0.01	-0.52
ApacheBooster	535	0.01	525	0.01	1.38
NOYB	534	0.01	537	0.01	-1.07
Server	528	0.01	505	0.01	4.01
WebServerX	518	0.01	569	0.01	-9.43
redir-httpd	515	0.01	514	0.01	-0.32
WebtoB	472	0.01	481	0.01	-2.38
Abyss	442	0.01	444	0.01	-0.97
ListManagerWeb	437	0.01	442	0.01	-1.64
EdgePrism	427	0.01	419	0.01	1.38
Ipswitch-IMail	424	0.01	439	0.01	-3.92
FlashCom	422	0.01	410	0.01	2.39
IBM_HTTP_SERVER	416	0.01	433	0.01	-4.42
PWS	415	0.01	358	0.01	15.32
Oracle-iPlanet-Web-Server	394	0.01	412	0.01	-4.86
Demandware	394	0.01	387	0.01	1.28
DinaHTTPd	391	0.01	401	0.01	-3.00
*****************	383	0.01	308	0.01	23.71
AOLserver	373	0.01	374	0.01	-0.78
TWS	372	0.01	373	0.01	-0.78
WebSphere	371	0.01	373	0.01	-1.05
FileMakerPro	369	0.01	388	0.01	-5.39
Unknown	363	0.01	364	0.01	-0.79
HTTP	361	0.01	369	0.01	-2.68
SAP	359	0.01	357	0.01	0.04
4D_WebStar_D	359	0.01	374	0.01	-4.51
WebSTAR	323	0.01	336	0.01	-4.37
WebLogic	316	0.01	309	0.01	1.74
WS	313	0.01	312	0.01	-0.20
Google	302	0.01	296	0.01	1.50
SonicWALL	299	0.01	290	0.01	2.57
OpenCms	299	0.01	298	0.01	-0.18
Indy	299	0.01	302	0.01	-1.51
WP	292	0.01	281	0.01	3.38
AmazonS3	285	0.01	276	0.01	2.73
CloudFront	282	0.01	419	0.01	-33.05
WebSite	276	0.01	279	0.01	-1.59
Roxen	270	0.01	269	0.01	-0.15
ngx_openresty	265	0.01	0	0.00	N/A
maged	265	0.01	0	0.00	N/A
eYouWS	265	0.01	274	0.01	-3.79

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.