You are viewing an outdated report.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) 34,284,521 hostnames, but only 3,660,088 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	October 2008 Count	October 2008 %	September 2008 Count	September 2008 %	Growth %
Apache	2,120,798	57.94	2,111,082	58.02	-0.13
Microsoft-IIS	985,651	26.93	978,641	26.90	0.13
null	244,270	6.67	240,157	6.60	1.12
Rapidsite	60,591	1.66	62,268	1.71	-3.26
Apache-Coyote	27,087	0.74	26,387	0.73	2.05
IdeaWebServer	21,013	0.57	20,638	0.57	1.22
nginx	18,461	0.50	17,255	0.47	6.36
A	17,320	0.47	17,234	0.47	-0.09
lighttpd	16,227	0.44	15,588	0.43	3.49
Lotus-Domino	13,550	0.37	13,535	0.37	-0.48
Netscape-Enterprise	9,468	0.26	9,681	0.27	-2.77
IBM_HTTP_Server	5,472	0.15	5,394	0.15	0.85
Zope	4,686	0.13	4,662	0.13	-0.08
Zeus	4,024	0.11	4,085	0.11	-2.07
squid	4,005	0.11	3,885	0.11	2.48
Sun-ONE-Web-Server	3,950	0.11	3,948	0.11	-0.54
Oracle-Application-Server-10g	3,585	0.10	3,588	0.10	-0.67
Resin	3,350	0.09	3,353	0.09	-0.68
Apache-AdvancedExtranetServer	3,304	0.09	3,399	0.09	-3.37
NOYB	2,754	0.08	2,932	0.08	-6.62
WebServer	2,740	0.07	2,920	0.08	-6.72
Microsoft-HTTPAPI	2,350	0.06	1,918	0.05	21.80
Cougar	2,150	0.06	2,136	0.06	0.06
GWS	1,912	0.05	1,866	0.05	1.86
BigIP	1,766	0.05	1,635	0.04	7.38
LiteSpeed	1,759	0.05	1,642	0.05	6.50
IBM_HTTP_SERVER	1,692	0.05	1,741	0.05	-3.38
IceWarp	1,593	0.04	1,586	0.04	-0.15
WDaemon	1,566	0.04	1,554	0.04	0.18
Jetty	1,556	0.04	1,568	0.04	-1.35
AkamaiGHost	1,520	0.04	3,150	0.09	-52.03
Ipswitch-IMail	1,487	0.04	1,487	0.04	-0.59
WebServerX	1,433	0.04	1,396	0.04	2.05
Oracle	1,404	0.04	1,397	0.04	-0.09
WWW	1,275	0.03	1,242	0.03	2.05
Boa	1,250	0.03	1,242	0.03	0.05
WebSTAR	1,212	0.03	1,246	0.03	-3.30
WebLogic	1,175	0.03	1,183	0.03	-1.26
thttpd	1,165	0.03	1,141	0.03	1.50
EZproxy	1,116	0.03	1,060	0.03	4.67
III	1,073	0.03	1,055	0.03	1.11
FileMakerPro	1,048	0.03	1,056	0.03	-1.34
WebSite	1,043	0.03	1,048	0.03	-1.06
CommuniGatePro	1,007	0.03	995	0.03	0.61
Web	999	0.03	1,065	0.03	-6.75
PowerSchool	977	0.03	996	0.03	-2.48
BIG-IP	945	0.03	959	0.03	-2.04
AnWeb	945	0.03	978	0.03	-3.94
WebSitePro	780	0.02	788	0.02	-1.60
4D_WebSTAR_S	746	0.02	767	0.02	-3.31
cpsrvd	706	0.02	706	0.02	-0.59
4D_WebStar_D	678	0.02	661	0.02	1.97
AOLserver	666	0.02	667	0.02	-0.74
Sun-Java-System-Web-Server	664	0.02	598	0.02	10.39
WebtoB	661	0.02	672	0.02	-2.21
EdgePrism	629	0.02	594	0.02	5.27
ListManagerWeb	597	0.02	579	0.02	2.50
httpd	549	0.01	518	0.01	5.36
DeleGate	522	0.01	532	0.01	-2.46
redir-httpd	512	0.01	512	0.01	-0.59
SAMBAR	485	0.01	494	0.01	-2.40
httpd+ssl	474	0.01	517	0.01	-8.86
Stronghold	466	0.01	474	0.01	-2.26
NetCache	441	0.01	457	0.01	-4.07
Oracle9iAS	429	0.01	434	0.01	-1.73
""	419	0.01	403	0.01	3.36
Blocked	413	0.01	408	0.01	0.63
Abyss	411	0.01	408	0.01	0.14
Roxen	406	0.01	407	0.01	-0.83
Nost	402	0.01	401	0.01	-0.34
JRun	391	0.01	375	0.01	3.65
WebSphere	369	0.01	366	0.01	0.23
Orion	367	0.01	382	0.01	-4.49
Ultraseek	352	0.01	352	0.01	-0.59
gws	349	0.01	389	0.01	-10.81
NetWare-Enterprise-Web-Server	349	0.01	354	0.01	-1.99
Secured	345	0.01	314	0.01	9.23
IIS	335	0.01	334	0.01	-0.29
ENIAC	328	0.01	467	0.01	-30.18
Indy	319	0.01	312	0.01	1.64
Rumpus	302	0.01	288	0.01	4.25
Netscape-FastTrack	300	0.01	306	0.01	-2.54
Sun	299	0.01	286	0.01	3.93
NCSA	287	0.01	294	0.01	-2.95
Server	279	0.01	269	0.01	3.11
Xitami	275	0.01	276	0.01	-0.95
Protected	271	0.01	256	0.01	5.24
OSU	267	0.01	275	0.01	-3.48
IBM-HTTP-Server	263	0.01	277	0.01	-5.61
Power	245	0.01	251	0.01	-2.96
Jeus	237	0.01	230	0.01	2.44
DinaHTTPd	227	0.01	226	0.01	-0.15
TimmiT	215	0.01	220	0.01	-2.85
FJapache	213	0.01	216	0.01	-1.97
Polaris	212	0.01	198	0.01	6.44
NS_6.1	203	0.01	220	0.01	-8.27
Kerio	202	0.01	191	0.01	5.14
Hanbiro	199	0.01	195	0.01	1.45
SAP	197	0.01	189	0.01	3.62
Apache-NeoNova	197	0.01	196	0.01	-0.08

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.