You are viewing an outdated report.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) 39,912,827 hostnames, but only 3,836,380 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	September 2009 Count	September 2009 %	August 2009 Count	August 2009 %	Growth %
Apache	2,235,292	58.27	2,218,985	58.29	-0.04
Microsoft-IIS	977,629	25.48	972,697	25.55	-0.26
null	280,990	7.32	277,825	7.30	0.37
Rapidsite	56,004	1.46	56,515	1.48	-1.66
nginx	38,895	1.01	36,910	0.97	4.57
Apache-Coyote	32,138	0.84	31,065	0.82	2.66
IdeaWebServer	25,727	0.67	25,617	0.67	-0.34
lighttpd	18,677	0.49	18,605	0.49	-0.38
A	17,577	0.46	17,643	0.46	-1.14
Lotus-Domino	12,599	0.33	12,542	0.33	-0.31
Microsoft-HTTPAPI	10,668	0.28	9,383	0.25	12.83
IBM_HTTP_Server	6,194	0.16	6,109	0.16	0.62
Netscape-Enterprise	4,498	0.12	4,627	0.12	-3.53
LiteSpeed	4,418	0.12	4,632	0.12	-5.35
Zope	4,416	0.12	4,420	0.12	-0.85
squid	4,192	0.11	4,141	0.11	0.46
Oracle-Application-Server-10g	3,935	0.10	3,904	0.10	0.02
Sun-ONE-Web-Server	3,558	0.09	3,569	0.09	-1.07
Zeus	3,552	0.09	3,642	0.10	-3.22
Resin	3,397	0.09	3,352	0.09	0.57
BigIP	3,148	0.08	2,953	0.08	5.79
Apache-AdvancedExtranetServer	2,376	0.06	2,419	0.06	-2.53
AkamaiGHost	2,342	0.06	2,223	0.06	4.55
Cougar	2,268	0.06	2,301	0.06	-2.19
GWS	1,972	0.05	1,985	0.05	-1.41
NOYB	1,947	0.05	1,974	0.05	-2.12
WDaemon	1,601	0.04	1,574	0.04	0.94
IceWarp	1,550	0.04	1,556	0.04	-1.15
Jetty	1,453	0.04	1,452	0.04	-0.70
WWW	1,450	0.04	1,462	0.04	-1.58
WebServerX	1,329	0.03	1,327	0.03	-0.62
IBM_HTTP_SERVER	1,321	0.03	1,360	0.04	-3.61
EZproxy	1,284	0.03	1,268	0.03	0.49
Oracle	1,243	0.03	1,230	0.03	0.28
Web	1,234	0.03	1,200	0.03	2.05
WebServer	1,218	0.03	1,442	0.04	-16.18
Boa	1,167	0.03	1,185	0.03	-2.27
Ipswitch-IMail	1,141	0.03	1,166	0.03	-2.89
thttpd	1,139	0.03	1,147	0.03	-1.46
III	1,112	0.03	1,108	0.03	-0.41
PowerSchool	1,049	0.03	1,008	0.03	3.27
WebLogic	1,026	0.03	1,028	0.03	-0.96
Sun-Java-System-Web-Server	1,011	0.03	980	0.03	2.37
AnWeb	959	0.02	920	0.02	3.44
CommuniGatePro	957	0.02	950	0.02	-0.03
WebSTAR	916	0.02	928	0.02	-2.05
httpd	840	0.02	859	0.02	-2.96
FileMakerPro	804	0.02	794	0.02	0.48
BIG-IP	753	0.02	787	0.02	-5.05
cpsrvd	730	0.02	729	0.02	-0.63
4D_WebStar_D	696	0.02	655	0.02	5.45
ListManagerWeb	673	0.02	660	0.02	1.19
WebtoB	642	0.02	630	0.02	1.13
WebSitePro	625	0.02	642	0.02	-3.39
apache	605	0.02	0	0.00	N/A
AOLserver	571	0.01	581	0.02	-2.47
WebSite	548	0.01	548	0.01	-0.77
Sun	547	0.01	529	0.01	2.61
HTTPD	543	0.01	518	0.01	4.02
4D_WebSTAR_S	516	0.01	552	0.01	-7.24
redir-httpd	515	0.01	514	0.01	-0.57
DeleGate	515	0.01	518	0.01	-1.34
ThirdSphere	512	0.01	518	0.01	-1.91
gws	502	0.01	570	0.01	-12.60
Power	489	0.01	455	0.01	6.65
Secured	429	0.01	409	0.01	4.09
JRun	428	0.01	414	0.01	2.59
""	424	0.01	410	0.01	2.62
Abyss	412	0.01	411	0.01	-0.52
SAMBAR	407	0.01	392	0.01	3.03
Rumpus	391	0.01	361	0.01	7.48
WebSphere	379	0.01	366	0.01	2.76
Roxen	372	0.01	360	0.01	2.54
Stronghold	364	0.01	369	0.01	-2.11
NetCache	355	0.01	362	0.01	-2.68
ENIAC	331	0.01	329	0.01	-0.16
Server	322	0.01	301	0.01	6.16
Indy	312	0.01	289	0.01	7.13
Orion	305	0.01	306	0.01	-1.09
Oracle9iAS	305	0.01	312	0.01	-2.99
Ultraseek	295	0.01	305	0.01	-4.02
IIS	279	0.01	282	0.01	-1.82
httpd+ssl	269	0.01	271	0.01	-1.50
Powered	267	0.01	264	0.01	0.36
JS	246	0.01	235	0.01	3.88
NCSA	241	0.01	238	0.01	0.49
OSU	239	0.01	243	0.01	-2.40
lighttpd-yt	238	0.01	323	0.01	-26.88
Kerio	238	0.01	234	0.01	0.93
SAP	237	0.01	232	0.01	1.37
Xitami	236	0.01	231	0.01	1.38
CoralWebPrx	236	0.01	258	0.01	-9.23
NetWare-Enterprise-Web-Server	229	0.01	230	0.01	-1.20
EdgePrism	229	0.01	225	0.01	1.00
Cherokee	202	0.01	0	0.00	N/A
SW	198	0.01	194	0.01	1.28
Hanbiro	198	0.01	196	0.01	0.25
Polaris	194	0.01	190	0.00	1.32
Apache-NeoNova	192	0.01	192	0.01	-0.77
SegPache	190	0.00	193	0.01	-2.31

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.