You are viewing an outdated report.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) 26,610,086 hostnames, but only 3,363,501 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 2008 Count	January 2008 %	December 2007 Count	December 2007 %	Growth %
Apache	1,943,987	57.80	1,896,591	57.77	0.05
Microsoft-IIS	931,427	27.69	912,883	27.81	-0.41
null	205,038	6.10	197,318	6.01	1.43
Rapidsite	67,358	2.00	66,792	2.03	-1.56
Apache-Coyote	21,766	0.65	20,838	0.63	1.96
IdeaWebServer	15,977	0.48	14,810	0.45	5.30
A	15,676	0.47	15,196	0.46	0.69
Lotus-Domino	13,886	0.41	13,741	0.42	-1.36
Netscape-Enterprise	11,074	0.33	11,098	0.34	-2.60
nginx	8,962	0.27	7,971	0.24	9.74
lighttpd	8,486	0.25	7,932	0.24	4.43
IBM_HTTP_Server	4,747	0.14	4,601	0.14	0.71
Zeus	4,516	0.13	4,485	0.14	-1.72
Apache-AdvancedExtranetServer	4,444	0.13	4,454	0.14	-2.61
Zope	4,424	0.13	4,332	0.13	-0.32
WebServer	4,046	0.12	4,075	0.12	-3.09
Sun-ONE-Web-Server	3,950	0.12	3,905	0.12	-1.27
squid	3,260	0.10	3,109	0.09	2.35
NOYB	3,254	0.10	3,248	0.10	-2.21
Resin	3,197	0.10	3,104	0.09	0.53
Oracle-Application-Server-10g	3,192	0.09	3,056	0.09	1.95
IBM_HTTP_SERVER	2,002	0.06	2,007	0.06	-2.63
Cougar	1,961	0.06	1,937	0.06	-1.18
Ipswitch-IMail	1,791	0.05	1,840	0.06	-4.99
WebServerX	1,778	0.05	1,860	0.06	-6.69
Jetty	1,564	0.05	1,550	0.05	-1.51
IceWarp	1,560	0.05	1,550	0.05	-1.76
GWS	1,545	0.05	1,481	0.05	1.83
WebSTAR	1,541	0.05	1,543	0.05	-2.52
Oracle	1,479	0.04	1,479	0.05	-2.39
WDaemon	1,459	0.04	1,433	0.04	-0.62
WebLogic	1,233	0.04	1,213	0.04	-0.78
FileMakerPro	1,225	0.04	1,227	0.04	-2.55
Boa	1,211	0.04	1,164	0.04	1.55
BIG-IP	1,161	0.03	1,301	0.04	-12.90
WebSite	1,133	0.03	1,127	0.03	-1.87
AkamaiGHost	1,120	0.03	1,425	0.04	-23.28
WebSitePro	1,026	0.03	1,034	0.03	-3.15
III	1,019	0.03	1,014	0.03	-1.91
AnWeb	1,016	0.03	949	0.03	4.50
thttpd	1,013	0.03	986	0.03	0.28
CommuniGatePro	973	0.03	982	0.03	-3.29
EZproxy	924	0.03	894	0.03	0.88
PowerSchool	907	0.03	847	0.03	4.52
4D_WebSTAR_S	907	0.03	922	0.03	-3.98
LiteSpeed	836	0.02	795	0.02	2.64
httpd+ssl	791	0.02	828	0.03	-6.75
EdgePrism	757	0.02	678	0.02	8.98
Web	740	0.02	692	0.02	4.38
AOLserver	723	0.02	722	0.02	-2.26
4D_WebStar_D	639	0.02	639	0.02	-2.39
cpsrvd	638	0.02	621	0.02	0.28
WebtoB	630	0.02	611	0.02	0.64
Stronghold	607	0.02	604	0.02	-1.91
BigIP	598	0.02	386	0.01	51.22
SAMBAR	549	0.02	534	0.02	0.35
DeleGate	538	0.02	537	0.02	-2.21
Oracle9iAS	517	0.02	517	0.02	-2.39
redir-httpd	507	0.02	510	0.02	-2.97
NetWare-Enterprise-Web-Server	487	0.01	493	0.02	-3.58
ListManagerWeb	464	0.01	453	0.01	-0.02
NetCache	453	0.01	437	0.01	1.18
Abyss	433	0.01	411	0.01	2.83
Roxen	414	0.01	413	0.01	-2.16
Orion	410	0.01	413	0.01	-3.10
WebSphere	404	0.01	402	0.01	-1.91
httpd	399	0.01	399	0.01	-2.39
WWW	399	0.01	385	0.01	1.16
Netscape-FastTrack	397	0.01	404	0.01	-4.08
NCSA	381	0.01	376	0.01	-1.09
Sun-Java-System-Web-Server	359	0.01	331	0.01	5.87
Ultraseek	358	0.01	354	0.01	-1.29
Acenet	354	0.01	346	0.01	-0.13
Microsoft-HTTPAPI	353	0.01	314	0.01	9.73
IBM-HTTP-Server	350	0.01	360	0.01	-5.10
Blocked	350	0.01	354	0.01	-3.49
ENIAC	342	0.01	310	0.01	7.68
""	329	0.01	335	0.01	-4.14
Power	326	0.01	328	0.01	-2.99
OSU	322	0.01	328	0.01	-4.18
Xitami	317	0.01	316	0.01	-2.08
Nost	314	0.01	301	0.01	1.82
JRun	305	0.01	306	0.01	-2.71
Secured	298	0.01	261	0.01	11.45
NS_6.1	282	0.01	278	0.01	-0.99
Indy	280	0.01	274	0.01	-0.25
gws	254	0.01	221	0.01	12.18
FirstClass	253	0.01	255	0.01	-3.16
IIS	250	0.01	232	0.01	5.18
Mittwald	246	0.01	226	0.01	6.25
Server	240	0.01	414	0.01	-43.42
Jeus	228	0.01	219	0.01	1.62
AppleShareIP	216	0.01	213	0.01	-1.02
Polaris	210	0.01	206	0.01	-0.50
Rumpus	194	0.01	0	0.00	N/A
Apache-NeoNova	192	0.01	191	0.01	-1.88
CoralWebPrx	190	0.01	189	0.01	-1.87
UserLand	189	0.01	184	0.01	0.26
Apache2	188	0.01	181	0.01	1.38
FJapache	187	0.01	186	0.01	-1.87

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.