You are viewing an outdated report.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) 64,905,216 hostnames, but only 5,194,200 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	January 2013 Count	January 2013 %	December 2012 Count	December 2012 %	Growth %
Apache	3,046,575	58.65	3,028,465	58.77	-0.20
Microsoft-IIS	1,017,520	19.59	1,010,221	19.60	-0.07
null	413,975	7.97	412,047	8.00	-0.33
nginx	258,573	4.98	251,837	4.89	1.86
Microsoft-HTTPAPI	102,840	1.98	100,425	1.95	1.60
Apache-Coyote	54,860	1.06	53,993	1.05	0.80
IdeaWebServer	47,484	0.91	46,939	0.91	0.36
Rapidsite	27,868	0.54	28,489	0.55	-2.95
LiteSpeed	26,540	0.51	26,251	0.51	0.30
lighttpd	21,305	0.41	21,528	0.42	-1.82
A	13,237	0.25	13,352	0.26	-1.64
Lotus-Domino	10,282	0.20	10,280	0.20	-0.77
BigIP	9,930	0.19	9,239	0.18	6.63
squid	7,120	0.14	7,111	0.14	-0.66
AkamaiGHost	6,784	0.13	6,822	0.13	-1.34
IBM_HTTP_Server	6,713	0.13	6,647	0.13	0.19
cloudflare-nginx	5,032	0.10	3,331	0.06	49.87
HTTPD	3,424	0.07	3,356	0.07	1.22
Zope	3,408	0.07	3,436	0.07	-1.60
Oracle-Application-Server-10g	3,306	0.06	3,317	0.06	-1.12
Resin	3,025	0.06	3,002	0.06	-0.03
EZproxy	2,088	0.04	2,061	0.04	0.51
Cougar	1,978	0.04	2,005	0.04	-2.13
-	1,881	0.04	1,846	0.04	1.09
Sun-ONE-Web-Server	1,862	0.04	1,891	0.04	-2.31
Zeus	1,860	0.04	1,870	0.04	-1.32
WDaemon	1,738	0.03	1,719	0.03	0.31
Varnish	1,633	0.03	1,603	0.03	1.07
Web	1,622	0.03	1,610	0.03	-0.05
IceWarp	1,555	0.03	1,549	0.03	-0.41
Netscape-Enterprise	1,385	0.03	1,442	0.03	-4.71
xServers	1,346	0.03	1,326	0.03	0.71
kangle	1,264	0.02	1,134	0.02	10.58
Tengine	1,210	0.02	1,004	0.02	19.57
III	1,198	0.02	1,194	0.02	-0.46
GWS	1,154	0.02	1,172	0.02	-2.31
Cherokee	1,082	0.02	1,099	0.02	-2.33
thttpd	1,053	0.02	1,054	0.02	-0.88
hosting	1,036	0.02	293	0.01	250.79
MochiWeb	1,035	0.02	837	0.02	22.68
Boa	949	0.02	937	0.02	0.48
Oracle	932	0.02	933	0.02	-0.90
Rumpus	916	0.02	865	0.02	5.06
Nginx	911	0.02	898	0.02	0.65
cpsrvd	902	0.02	915	0.02	-2.20
Apache-AdvancedExtranetServer	888	0.02	894	0.02	-1.46
Sun-Java-System-Web-Server	872	0.02	897	0.02	-3.56
httpd	839	0.02	892	0.02	-6.69
sffe	815	0.02	875	0.02	-7.59
CommuniGatePro	802	0.02	819	0.02	-2.85
GlassFish	758	0.01	721	0.01	4.30
Sun	741	0.01	750	0.01	-1.98
Bomgar	736	0.01	724	0.01	0.85
Jetty	713	0.01	735	0.01	-3.76
WebServer	651	0.01	656	0.01	-1.55
WWW	651	0.01	639	0.01	1.07
Oracle-Application-Server-11g	583	0.01	577	0.01	0.24
AnWeb	567	0.01	579	0.01	-2.85
WebServerX	552	0.01	547	0.01	0.12
FC	548	0.01	573	0.01	-5.12
NOYB	544	0.01	549	0.01	-1.69
Kucci	515	0.01	529	0.01	-3.42
redir-httpd	514	0.01	514	0.01	-0.79
CloudFront	514	0.01	812	0.02	-37.20
smartcds	507	0.01	499	0.01	0.80
Server	507	0.01	535	0.01	-5.98
WebtoB	492	0.01	496	0.01	-1.59
ListManagerWeb	461	0.01	460	0.01	-0.57
Ipswitch-IMail	454	0.01	456	0.01	-1.23
ApacheBooster	448	0.01	376	0.01	18.21
IBM_HTTP_SERVER	438	0.01	452	0.01	-3.86
Abyss	435	0.01	420	0.01	2.75
DinaHTTPd	418	0.01	416	0.01	-0.31
EdgePrism	412	0.01	394	0.01	3.74
Oracle-iPlanet-Web-Server	398	0.01	402	0.01	-1.78
FlashCom	393	0.01	370	0.01	5.38
Unknown	391	0.01	377	0.01	2.89
FileMakerPro	391	0.01	385	0.01	0.76
4D_WebStar_D	388	0.01	384	0.01	0.24
Demandware	385	0.01	381	0.01	0.25
AOLserver	376	0.01	377	0.01	-1.05
HTTP	373	0.01	364	0.01	1.66
TWS	370	0.01	362	0.01	1.40
WebSphere	369	0.01	369	0.01	-0.79
SAP	356	0.01	348	0.01	1.49
WebSTAR	342	0.01	353	0.01	-3.88
WebLogic	320	0.01	326	0.01	-2.62
*****************	312	0.01	277	0.01	11.75
Indy	308	0.01	303	0.01	0.85
WS	303	0.01	296	0.01	1.56
OpenCms	300	0.01	295	0.01	0.89
PWS	295	0.01	323	0.01	-9.39
WebSite	293	0.01	0	0.00	N/A
Google	288	0.01	276	0.01	3.52
SonicWALL	286	0.01	278	0.01	2.06
Secured	282	0.01	305	0.01	-8.27
WP	274	0.01	271	0.01	0.31
AmazonS3	274	0.01	273	0.01	-0.43
Roxen	269	0.01	268	0.01	-0.42
eYouWS	266	0.01	271	0.01	-2.62

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.