You are viewing an outdated report.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) 34,964,885 hostnames, but only 3,654,634 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	November 2008 Count	November 2008 %	October 2008 Count	October 2008 %	Growth %
Apache	2,115,770	57.89	2,120,798	57.94	-0.09
Microsoft-IIS	979,209	26.79	985,651	26.93	-0.51
null	248,141	6.79	244,270	6.67	1.74
Rapidsite	60,123	1.65	60,591	1.66	-0.62
Apache-Coyote	27,543	0.75	27,087	0.74	1.84
IdeaWebServer	21,508	0.59	21,013	0.57	2.51
nginx	20,055	0.55	18,461	0.50	8.80
A	17,432	0.48	17,320	0.47	0.80
lighttpd	16,595	0.45	16,227	0.44	2.42
Lotus-Domino	13,350	0.37	13,550	0.37	-1.33
Netscape-Enterprise	9,100	0.25	9,468	0.26	-3.74
IBM_HTTP_Server	5,521	0.15	5,472	0.15	1.05
Zope	4,653	0.13	4,686	0.13	-0.56
Zeus	3,998	0.11	4,024	0.11	-0.50
squid	3,982	0.11	4,005	0.11	-0.43
Sun-ONE-Web-Server	3,856	0.11	3,950	0.11	-2.23
Oracle-Application-Server-10g	3,610	0.10	3,585	0.10	0.85
Resin	3,383	0.09	3,350	0.09	1.14
Apache-AdvancedExtranetServer	3,166	0.09	3,304	0.09	-4.03
Microsoft-HTTPAPI	2,828	0.08	2,350	0.06	20.52
NOYB	2,670	0.07	2,754	0.08	-2.91
WebServer	2,525	0.07	2,740	0.07	-7.71
Cougar	2,226	0.06	2,150	0.06	3.69
GWS	1,924	0.05	1,912	0.05	0.78
BigIP	1,917	0.05	1,766	0.05	8.71
LiteSpeed	1,855	0.05	1,759	0.05	5.62
WebServerX	1,737	0.05	1,433	0.04	21.40
IBM_HTTP_SERVER	1,657	0.05	1,692	0.05	-1.92
IceWarp	1,594	0.04	1,593	0.04	0.21
WDaemon	1,571	0.04	1,566	0.04	0.47
Jetty	1,551	0.04	1,556	0.04	-0.17
Ipswitch-IMail	1,441	0.04	1,487	0.04	-2.95
WWW	1,415	0.04	1,275	0.03	11.15
AkamaiGHost	1,387	0.04	1,520	0.04	-8.61
Oracle	1,375	0.04	1,404	0.04	-1.92
Boa	1,232	0.03	1,250	0.03	-1.29
WebSTAR	1,162	0.03	1,212	0.03	-3.98
WebLogic	1,140	0.03	1,175	0.03	-2.83
EZproxy	1,117	0.03	1,116	0.03	0.24
thttpd	1,109	0.03	1,165	0.03	-4.66
III	1,060	0.03	1,073	0.03	-1.06
Web	1,037	0.03	999	0.03	3.96
WebSite	1,028	0.03	1,043	0.03	-1.29
FileMakerPro	1,009	0.03	1,048	0.03	-3.58
CommuniGatePro	1,002	0.03	1,007	0.03	-0.35
PowerSchool	979	0.03	977	0.03	0.35
BIG-IP	922	0.03	945	0.03	-2.29
AnWeb	895	0.02	945	0.03	-5.15
WebSitePro	746	0.02	780	0.02	-4.22
4D_WebSTAR_S	718	0.02	746	0.02	-3.61
Sun-Java-System-Web-Server	713	0.02	664	0.02	7.54
cpsrvd	694	0.02	706	0.02	-1.55
4D_WebStar_D	666	0.02	678	0.02	-1.62
WebtoB	656	0.02	661	0.02	-0.61
AOLserver	655	0.02	666	0.02	-1.50
ListManagerWeb	597	0.02	597	0.02	0.15
httpd	582	0.02	549	0.01	6.17
DeleGate	522	0.01	522	0.01	0.15
redir-httpd	512	0.01	512	0.01	0.15
EdgePrism	477	0.01	629	0.02	-24.05
gws	475	0.01	349	0.01	36.31
SAMBAR	468	0.01	485	0.01	-3.36
httpd+ssl	447	0.01	474	0.01	-5.56
""	443	0.01	419	0.01	5.89
Stronghold	435	0.01	466	0.01	-6.51
NetCache	429	0.01	441	0.01	-2.58
Nost	422	0.01	402	0.01	5.13
Oracle9iAS	412	0.01	429	0.01	-3.82
Blocked	412	0.01	413	0.01	-0.09
HTTPD	411	0.01	0	0.00	N/A
JRun	398	0.01	391	0.01	1.94
Abyss	398	0.01	411	0.01	-3.02
Roxen	391	0.01	406	0.01	-3.55
WebSphere	360	0.01	369	0.01	-2.29
Orion	357	0.01	367	0.01	-2.58
Ultraseek	348	0.01	352	0.01	-0.99
Secured	343	0.01	345	0.01	-0.43
ENIAC	325	0.01	328	0.01	-0.77
NetWare-Enterprise-Web-Server	322	0.01	349	0.01	-7.60
IIS	319	0.01	335	0.01	-4.63
Sun	309	0.01	299	0.01	3.50
Indy	308	0.01	319	0.01	-3.30
Rumpus	306	0.01	302	0.01	1.48
Netscape-FastTrack	295	0.01	300	0.01	-1.52
Server	284	0.01	279	0.01	1.94
NCSA	281	0.01	287	0.01	-1.94
Protected	260	0.01	271	0.01	-3.92
OSU	257	0.01	267	0.01	-3.60
IBM-HTTP-Server	257	0.01	263	0.01	-2.14
Xitami	253	0.01	275	0.01	-7.86
Power	240	0.01	245	0.01	-1.89
DinaHTTPd	240	0.01	227	0.01	5.88
Jeus	231	0.01	237	0.01	-2.39
FJapache	213	0.01	213	0.01	0.15
Polaris	209	0.01	212	0.01	-1.27
MediaFire-HTTP	203	0.01	0	0.00	N/A
Kerio	200	0.01	202	0.01	-0.84
Hanbiro	199	0.01	199	0.01	0.15
CoralWebPrx	199	0.01	0	0.00	N/A
SAP	198	0.01	197	0.01	0.66

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.