You are viewing an outdated report.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) 35,917,153 hostnames, but only 3,691,734 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	December 2008 Count	December 2008 %	November 2008 Count	November 2008 %	Growth %
Apache	2,140,015	57.97	2,115,770	57.89	0.13
Microsoft-IIS	983,073	26.63	979,209	26.79	-0.61
null	251,827	6.82	248,141	6.79	0.47
Rapidsite	60,134	1.63	60,123	1.65	-0.99
Apache-Coyote	28,122	0.76	27,543	0.75	1.08
IdeaWebServer	22,239	0.60	21,508	0.59	2.36
nginx	21,831	0.59	20,055	0.55	7.76
A	17,545	0.48	17,432	0.48	-0.36
lighttpd	16,897	0.46	16,595	0.45	0.80
Lotus-Domino	13,241	0.36	13,350	0.37	-1.81
Netscape-Enterprise	9,056	0.25	9,100	0.25	-1.48
IBM_HTTP_Server	5,648	0.15	5,521	0.15	1.27
Zope	4,650	0.13	4,653	0.13	-1.07
squid	4,048	0.11	3,982	0.11	0.64
Zeus	3,983	0.11	3,998	0.11	-1.38
Sun-ONE-Web-Server	3,895	0.11	3,856	0.11	-0.00
Oracle-Application-Server-10g	3,705	0.10	3,610	0.10	1.60
Resin	3,423	0.09	3,383	0.09	0.17
Microsoft-HTTPAPI	3,411	0.09	2,828	0.08	19.40
Apache-AdvancedExtranetServer	3,078	0.08	3,166	0.09	-3.76
NOYB	2,597	0.07	2,670	0.07	-3.71
Cougar	2,191	0.06	2,226	0.06	-2.56
WebServer	2,146	0.06	2,525	0.07	-15.86
LiteSpeed	2,098	0.06	1,855	0.05	11.96
BigIP	2,005	0.05	1,917	0.05	3.54
GWS	1,947	0.05	1,924	0.05	0.18
AkamaiGHost	1,864	0.05	1,387	0.04	33.04
WebServerX	1,704	0.05	1,737	0.05	-2.89
IBM_HTTP_SERVER	1,634	0.04	1,657	0.05	-2.38
IceWarp	1,595	0.04	1,594	0.04	-0.94
WDaemon	1,587	0.04	1,571	0.04	0.00
Jetty	1,537	0.04	1,551	0.04	-1.90
WWW	1,476	0.04	1,415	0.04	3.26
Ipswitch-IMail	1,406	0.04	1,441	0.04	-3.41
Oracle	1,344	0.04	1,375	0.04	-3.24
Boa	1,256	0.03	1,232	0.03	0.92
thttpd	1,191	0.03	1,109	0.03	6.31
WebLogic	1,139	0.03	1,140	0.03	-1.09
WebSTAR	1,136	0.03	1,162	0.03	-3.22
EZproxy	1,130	0.03	1,117	0.03	0.15
III	1,060	0.03	1,060	0.03	-1.00
Web	1,041	0.03	1,037	0.03	-0.62
WebSite	1,017	0.03	1,028	0.03	-2.06
CommuniGatePro	1,001	0.03	1,002	0.03	-1.10
PowerSchool	997	0.03	979	0.03	0.82
FileMakerPro	961	0.03	1,009	0.03	-5.71
AnWeb	953	0.03	895	0.02	5.41
BIG-IP	930	0.03	922	0.03	-0.15
Sun-Java-System-Web-Server	756	0.02	713	0.02	4.97
WebSitePro	719	0.02	746	0.02	-4.59
cpsrvd	715	0.02	694	0.02	1.99
4D_WebSTAR_S	699	0.02	718	0.02	-3.62
AOLserver	659	0.02	655	0.02	-0.40
4D_WebStar_D	659	0.02	666	0.02	-2.05
WebtoB	649	0.02	656	0.02	-2.06
httpd	639	0.02	582	0.02	8.69
ListManagerWeb	607	0.02	597	0.02	0.65
DeleGate	527	0.01	522	0.01	-0.06
redir-httpd	513	0.01	512	0.01	-0.81
gws	497	0.01	475	0.01	3.58
EdgePrism	472	0.01	477	0.01	-2.04
SAMBAR	466	0.01	468	0.01	-1.43
Stronghold	444	0.01	435	0.01	1.04
NetCache	441	0.01	429	0.01	1.76
""	438	0.01	443	0.01	-2.12
Nost	432	0.01	422	0.01	1.34
HTTPD	419	0.01	411	0.01	0.92
Blocked	418	0.01	412	0.01	0.44
Abyss	417	0.01	398	0.01	3.72
JRun	412	0.01	398	0.01	2.48
httpd+ssl	405	0.01	447	0.01	-10.31
Roxen	392	0.01	391	0.01	-0.75
Oracle9iAS	388	0.01	412	0.01	-6.77
WebSphere	380	0.01	360	0.01	4.49
Orion	364	0.01	357	0.01	0.94
Secured	346	0.01	343	0.01	-0.14
Ultraseek	345	0.01	348	0.01	-1.86
Sun	343	0.01	309	0.01	9.89
ENIAC	324	0.01	325	0.01	-1.31
Indy	320	0.01	308	0.01	2.85
IIS	319	0.01	319	0.01	-1.00
Rumpus	314	0.01	306	0.01	1.58
NetWare-Enterprise-Web-Server	309	0.01	322	0.01	-5.00
Server	288	0.01	284	0.01	0.39
NCSA	276	0.01	281	0.01	-2.77
Protected	275	0.01	260	0.01	4.71
Netscape-FastTrack	267	0.01	295	0.01	-10.40
MediaFire-HTTP	263	0.01	203	0.01	28.25
OSU	262	0.01	257	0.01	0.92
Xitami	261	0.01	253	0.01	2.13
Power	259	0.01	240	0.01	6.83
DinaHTTPd	249	0.01	240	0.01	2.71
IBM-HTTP-Server	245	0.01	257	0.01	-5.63
Jeus	231	0.01	231	0.01	-1.00
FJapache	210	0.01	213	0.01	-2.40
Hanbiro	202	0.01	199	0.01	0.49
Kerio	201	0.01	200	0.01	-0.51
Polaris	200	0.01	209	0.01	-5.27
SAP	198	0.01	198	0.01	-1.00
Apache-NeoNova	198	0.01	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.