You are viewing an outdated report. The latest version of this report was published on October 1st, 2024

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) 50,542,243 hostnames, but only 4,362,742 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 2011 Count	January 2011 %	December 2010 Count	December 2010 %	Growth %
Apache	2,571,521	58.94	2,541,522	58.93	0.02
Microsoft-IIS	1,004,082	23.01	1,000,760	23.20	-0.82
null	333,422	7.64	328,242	7.61	0.41
nginx	103,386	2.37	97,230	2.25	5.11
Rapidsite	48,718	1.12	49,312	1.14	-2.34
Apache-Coyote	41,626	0.95	41,211	0.96	-0.15
Microsoft-HTTPAPI	37,491	0.86	35,319	0.82	4.93
IdeaWebServer	34,488	0.79	33,422	0.77	2.01
lighttpd	18,479	0.42	17,943	0.42	1.81
A	17,305	0.40	17,213	0.40	-0.62
LiteSpeed	11,950	0.27	11,169	0.26	5.77
Lotus-Domino	11,724	0.27	11,780	0.27	-1.62
IBM_HTTP_Server	6,694	0.15	6,668	0.15	-0.76
BigIP	5,620	0.13	5,455	0.13	1.84
squid	4,586	0.11	4,495	0.10	0.86
Zope	4,066	0.09	4,075	0.09	-1.36
Oracle-Application-Server-10g	4,055	0.09	4,114	0.10	-2.56
Resin	3,384	0.08	3,380	0.08	-1.03
AkamaiGHost	3,156	0.07	3,076	0.07	1.43
Sun-ONE-Web-Server	2,834	0.06	2,876	0.07	-2.59
Zeus	2,822	0.06	2,839	0.07	-1.74
Netscape-Enterprise	2,680	0.06	2,742	0.06	-3.38
Cougar	2,372	0.05	2,352	0.05	-0.31
WebServerX	1,771	0.04	1,723	0.04	1.61
WDaemon	1,703	0.04	1,689	0.04	-0.33
GWS	1,630	0.04	1,659	0.04	-2.87
EZproxy	1,615	0.04	1,596	0.04	0.03
IceWarp	1,602	0.04	1,599	0.04	-0.96
apache	1,564	0.04	1,450	0.03	6.63
HTTPD	1,501	0.03	1,431	0.03	3.69
Apache-AdvancedExtranetServer	1,499	0.03	1,532	0.04	-3.28
PowerSchool	1,405	0.03	1,406	0.03	-1.22
Sun-Java-System-Web-Server	1,263	0.03	1,274	0.03	-2.00
Jetty	1,172	0.03	1,212	0.03	-4.41
III	1,161	0.03	1,166	0.03	-1.57
thttpd	1,149	0.03	1,176	0.03	-3.42
Web	1,106	0.03	1,103	0.03	-0.88
Oracle	1,092	0.03	1,103	0.03	-2.13
Boa	1,060	0.02	1,064	0.02	-1.52
NOYB	1,047	0.02	1,087	0.03	-4.78
httpd	1,032	0.02	1,050	0.02	-2.84
CommuniGatePro	906	0.02	915	0.02	-2.12
AnWeb	853	0.02	867	0.02	-2.74
cpsrvd	845	0.02	842	0.02	-0.79
IBM_HTTP_SERVER	843	0.02	856	0.02	-2.65
Sun	820	0.02	805	0.02	0.70
WWW	818	0.02	831	0.02	-2.69
Ipswitch-IMail	810	0.02	822	0.02	-2.59
ListManagerWeb	766	0.02	768	0.02	-1.40
Cherokee	740	0.02	693	0.02	5.56
WebtoB	655	0.02	649	0.02	-0.23
4D_WebStar_D	634	0.01	631	0.01	-0.68
Rumpus	632	0.01	622	0.01	0.44
WebSTAR	607	0.01	634	0.01	-5.36
FileMakerPro	583	0.01	623	0.01	-7.49
WebLogic	526	0.01	527	0.01	-1.33
sffe	523	0.01	579	0.01	-10.71
redir-httpd	515	0.01	514	0.01	-0.95
BIG-IP	506	0.01	507	0.01	-1.34
Varnish	505	0.01	464	0.01	7.59
DeleGate	482	0.01	483	0.01	-1.35
Bomgar	480	0.01	456	0.01	4.06
AOLserver	472	0.01	479	0.01	-2.59
WebSite	468	0.01	469	0.01	-1.36
Secured	444	0.01	435	0.01	0.90
WebSitePro	433	0.01	438	0.01	-2.27
xServers	419	0.01	370	0.01	11.95
Power	415	0.01	409	0.01	0.30
JRun	414	0.01	430	0.01	-4.82
Abyss	410	0.01	409	0.01	-0.90
Server	385	0.01	377	0.01	0.95
WebServer	381	0.01	412	0.01	-8.58
WebSphere	380	0.01	372	0.01	0.98
4D_WebSTAR_S	365	0.01	385	0.01	-6.28
CloudFront	349	0.01	255	0.01	35.29
FC	342	0.01	311	0.01	8.71
EdgePrism	340	0.01	360	0.01	-6.64
Indy	329	0.01	323	0.01	0.69
Roxen	322	0.01	324	0.01	-1.76
SW	303	0.01	287	0.01	4.37
SAMBAR	302	0.01	296	0.01	0.86
""	289	0.01	302	0.01	-5.40
SAP	283	0.01	278	0.01	0.63
IIS	281	0.01	264	0.01	5.22
Stronghold	278	0.01	290	0.01	-5.24
ENIAC	259	0.01	261	0.01	-1.90
NetCache	258	0.01	262	0.01	-2.66
Orion	246	0.01	252	0.01	-3.50
IIS6	244	0.01	245	0.01	-1.55
Ultraseek	233	0.01	234	0.01	-1.57
NetBox	223	0.01	237	0.01	-6.99
OpenCms	220	0.01	213	0.00	2.10
Hanbiro	212	0.00	216	0.01	-2.98
RomPager	211	0.00	219	0.01	-4.76
Unknown	210	0.00	202	0.00	2.77
TimmiT	206	0.00	213	0.00	-4.39
Oracle9iAS	204	0.00	212	0.00	-4.88
VB	200	0.00	197	0.00	0.36
BarracudaHTTP	199	0.00	198	0.00	-0.65
OSU	197	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.