You are viewing an outdated report. The latest version of this report was published on September 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) 23,331,627 hostnames, but only 3,114,088 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 2007 Count	March 2007 %	February 2007 Count	February 2007 %	Growth %
Apache	1,784,491	57.30	1,756,978	57.21	0.16
Microsoft-IIS	904,797	29.05	896,751	29.20	-0.50
null	164,843	5.29	160,659	5.23	1.18
Rapidsite	65,572	2.11	65,385	2.13	-1.11
Apache-Coyote	16,442	0.53	15,669	0.51	3.48
Lotus-Domino	14,436	0.46	14,472	0.47	-1.63
A	13,721	0.44	13,389	0.44	1.06
Netscape-Enterprise	13,296	0.43	13,607	0.44	-3.64
IdeaWebServer	11,571	0.37	11,082	0.36	2.96
Apache-AdvancedExtranetServer	5,904	0.19	6,026	0.20	-3.38
NOYB	5,350	0.17	5,203	0.17	1.40
lighttpd	4,837	0.16	4,580	0.15	4.15
Zeus	4,770	0.15	4,784	0.16	-1.68
nginx	4,379	0.14	3,878	0.13	11.35
Zope	4,152	0.13	4,058	0.13	0.90
IBM_HTTP_Server	3,856	0.12	3,759	0.12	1.16
Sun-ONE-Web-Server	3,828	0.12	3,772	0.12	0.08
WebServer	3,547	0.11	3,446	0.11	1.50
Resin	2,869	0.09	2,761	0.09	2.47
Oracle-Application-Server-10g	2,589	0.08	2,525	0.08	1.11
Ipswitch-IMail	2,368	0.08	2,474	0.08	-5.61
IBM_HTTP_SERVER	2,363	0.08	2,393	0.08	-2.62
squid	2,319	0.07	2,285	0.07	0.08
WebSTAR	2,151	0.07	2,225	0.07	-4.67
Cougar	1,697	0.05	1,652	0.05	1.30
Oracle	1,581	0.05	1,603	0.05	-2.74
Jetty	1,497	0.05	1,472	0.05	0.29
WebSitePro	1,480	0.05	1,590	0.05	-8.21
FileMakerPro	1,409	0.05	1,409	0.05	-1.39
IceWarp	1,389	0.04	1,365	0.04	0.35
WebLogic	1,331	0.04	1,326	0.04	-1.02
WDaemon	1,295	0.04	1,271	0.04	0.47
GWS	1,282	0.04	1,228	0.04	2.95
Boa	1,226	0.04	1,026	0.03	17.84
WebSite	1,199	0.04	1,245	0.04	-5.03
4D_WebSTAR_S	1,121	0.04	1,147	0.04	-3.62
AnWeb	1,070	0.03	973	0.03	8.44
BIG-IP	1,009	0.03	964	0.03	3.22
thttpd	999	0.03	1,005	0.03	-1.98
III	987	0.03	983	0.03	-0.99
CommuniGatePro	969	0.03	967	0.03	-1.18
httpd+ssl	938	0.03	929	0.03	-0.43
WebServerX	789	0.03	688	0.02	13.09
AOLserver	770	0.02	752	0.02	0.97
Stronghold	767	0.02	784	0.03	-3.53
EZproxy	754	0.02	752	0.02	-1.12
NetWare-Enterprise-Web-Server	720	0.02	733	0.02	-3.14
PowerSchool	714	0.02	686	0.02	2.64
Web	708	0.02	680	0.02	2.67
Oracle9iAS	658	0.02	677	0.02	-4.15
SAMBAR	625	0.02	621	0.02	-0.75
AkamaiGHost	598	0.02	503	0.02	17.24
4D_WebStar_D	589	0.02	590	0.02	-1.55
cpsrvd	574	0.02	552	0.02	2.54
NetCache	573	0.02	557	0.02	1.45
Netscape-FastTrack	572	0.02	590	0.02	-4.40
WebtoB	545	0.02	521	0.02	3.16
DeleGate	532	0.02	508	0.02	3.27
Orion	520	0.02	512	0.02	0.15
redir-httpd	506	0.02	507	0.02	-1.58
IBM-HTTP-Server	460	0.01	467	0.02	-2.87
Roxen	455	0.01	465	0.02	-3.51
FirstClass	454	0.01	496	0.02	-9.74
EdgePrism	450	0.01	384	0.01	15.56
NCSA	446	0.01	458	0.01	-3.97
LiteSpeed	433	0.01	401	0.01	6.48
Acenet	377	0.01	371	0.01	0.21
Ultraseek	374	0.01	371	0.01	-0.59
WebSphere	368	0.01	360	0.01	0.80
OSU	362	0.01	357	0.01	-0.01
Xitami	361	0.01	371	0.01	-4.05
Abyss	354	0.01	335	0.01	4.21
ListManagerWeb	343	0.01	337	0.01	0.37
AppleShareIP	318	0.01	330	0.01	-4.97
Nost	287	0.01	268	0.01	5.60
""	260	0.01	260	0.01	-1.39
JRun	258	0.01	250	0.01	1.77
IIS	245	0.01	240	0.01	0.67
httpd	244	0.01	229	0.01	5.07
Indy	239	0.01	237	0.01	-0.56
Jeus	234	0.01	226	0.01	2.10
Tcl-Webserver	228	0.01	227	0.01	-0.95
WWW	217	0.01	207	0.01	3.38
Microsoft-HTTPAPI	216	0.01	203	0.01	4.93
Power	213	0.01	204	0.01	2.96
Polaris	205	0.01	205	0.01	-1.39
UserLand	198	0.01	199	0.01	-1.88
HPWB	189	0.01	218	0.01	-14.51
Webserver	185	0.01	186	0.01	-1.92
Powered	185	0.01	187	0.01	-2.44
eSoft	181	0.01	188	0.01	-5.06
Apache-NeoNova	181	0.01	178	0.01	0.27
NAB	174	0.01	178	0.01	-3.60
OpenSA	173	0.01	173	0.01	-1.39
Disallowed	169	0.01	171	0.01	-2.54
NS_6.1	168	0.01	0	0.00	N/A
Server	166	0.01	156	0.01	4.93
Oracle_Web_Listener	159	0.01	163	0.01	-3.81
Squid	152	0.00	157	0.01	-4.53
Hanbiro	152	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.