You are viewing an outdated report. The latest version of this report was published on October 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) 38,549,333 hostnames, but only 3,769,917 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	July 2009 Count	July 2009 %	June 2009 Count	June 2009 %	Growth %
Apache	2,195,758	58.24	2,195,770	58.11	0.23
Microsoft-IIS	967,433	25.66	977,915	25.88	-0.85
null	274,249	7.27	271,957	7.20	1.07
Rapidsite	56,487	1.50	57,033	1.51	-0.73
nginx	34,830	0.92	32,874	0.87	6.19
Apache-Coyote	30,530	0.81	30,442	0.81	0.52
IdeaWebServer	25,189	0.67	24,739	0.65	2.05
lighttpd	18,355	0.49	18,238	0.48	0.87
A	17,573	0.47	17,604	0.47	0.05
Lotus-Domino	12,540	0.33	12,718	0.34	-1.18
Microsoft-HTTPAPI	8,579	0.23	7,647	0.20	12.44
IBM_HTTP_Server	6,081	0.16	6,029	0.16	1.09
Netscape-Enterprise	4,741	0.13	5,107	0.14	-6.96
Zope	4,467	0.12	4,550	0.12	-1.60
LiteSpeed	4,262	0.11	4,034	0.11	5.89
squid	4,160	0.11	4,387	0.12	-4.96
Oracle-Application-Server-10g	3,856	0.10	3,827	0.10	0.99
Zeus	3,810	0.10	3,859	0.10	-1.05
Sun-ONE-Web-Server	3,634	0.10	3,750	0.10	-2.87
Resin	3,346	0.09	3,386	0.09	-0.96
BigIP	2,815	0.07	2,656	0.07	6.23
Apache-AdvancedExtranetServer	2,471	0.07	2,583	0.07	-4.12
Cougar	2,244	0.06	2,269	0.06	-0.88
AkamaiGHost	2,054	0.05	2,820	0.07	-27.00
NOYB	1,988	0.05	1,733	0.05	14.97
GWS	1,985	0.05	2,005	0.05	-0.77
WDaemon	1,569	0.04	1,581	0.04	-0.53
IceWarp	1,565	0.04	1,575	0.04	-0.41
WebServer	1,499	0.04	1,832	0.05	-17.99
Jetty	1,452	0.04	1,520	0.04	-4.26
WWW	1,439	0.04	1,455	0.04	-0.88
IBM_HTTP_SERVER	1,356	0.04	1,416	0.04	-4.02
WebServerX	1,336	0.04	1,393	0.04	-3.87
EZproxy	1,247	0.03	1,235	0.03	1.20
Oracle	1,246	0.03	1,270	0.03	-1.67
Boa	1,187	0.03	1,202	0.03	-1.02
Ipswitch-IMail	1,183	0.03	1,231	0.03	-3.68
Web	1,182	0.03	1,183	0.03	0.14
thttpd	1,124	0.03	1,154	0.03	-2.38
III	1,105	0.03	1,107	0.03	0.05
WebLogic	1,055	0.03	1,078	0.03	-1.91
PowerSchool	1,000	0.03	1,052	0.03	-4.73
Sun-Java-System-Web-Server	955	0.03	936	0.02	2.26
WebSTAR	948	0.03	985	0.03	-3.54
CommuniGatePro	948	0.03	968	0.03	-1.84
AnWeb	871	0.02	962	0.03	-9.25
httpd	863	0.02	825	0.02	4.84
FileMakerPro	830	0.02	867	0.02	-4.05
BIG-IP	801	0.02	820	0.02	-2.10
cpsrvd	715	0.02	711	0.02	0.79
4D_WebStar_D	677	0.02	691	0.02	-1.80
ListManagerWeb	650	0.02	643	0.02	1.32
WebSitePro	646	0.02	661	0.02	-2.05
WebtoB	627	0.02	640	0.02	-1.81
AOLserver	593	0.02	606	0.02	-1.92
gws	590	0.02	573	0.02	3.20
4D_WebSTAR_S	555	0.01	585	0.02	-4.91
WebSite	544	0.01	576	0.02	-5.34
ThirdSphere	530	0.01	515	0.01	3.15
DeleGate	516	0.01	526	0.01	-1.68
redir-httpd	511	0.01	513	0.01	-0.16
HTTPD	495	0.01	495	0.01	0.23
Sun	489	0.01	455	0.01	7.72
Power	449	0.01	424	0.01	6.14
JRun	418	0.01	421	0.01	-0.49
""	416	0.01	412	0.01	1.20
Abyss	406	0.01	426	0.01	-4.48
SAMBAR	401	0.01	418	0.01	-3.85
Secured	382	0.01	382	0.01	0.23
Stronghold	377	0.01	376	0.01	0.49
WebSphere	371	0.01	390	0.01	-4.66
Roxen	371	0.01	376	0.01	-1.11
NetCache	368	0.01	373	0.01	-1.12
Rumpus	364	0.01	362	0.01	0.78
ENIAC	323	0.01	322	0.01	0.54
Oracle9iAS	319	0.01	328	0.01	-2.52
Orion	316	0.01	327	0.01	-3.14
lighttpd-yt	311	0.01	462	0.01	-32.53
Ultraseek	307	0.01	317	0.01	-2.93
Indy	300	0.01	320	0.01	-6.04
Server	298	0.01	301	0.01	-0.77
Powered	276	0.01	291	0.01	-4.94
httpd+ssl	275	0.01	0	0.00	N/A
IIS	268	0.01	272	0.01	-1.25
NCSA	257	0.01	269	0.01	-4.24
OSU	251	0.01	249	0.01	1.03
NetWare-Enterprise-Web-Server	246	0.01	267	0.01	-7.66
Xitami	234	0.01	246	0.01	-4.66
SAP	232	0.01	231	0.01	0.66
Kerio	223	0.01	218	0.01	2.53
JS	219	0.01	196	0.01	11.99
CoralWebPrx	215	0.01	240	0.01	-10.21
SW	206	0.01	0	0.00	N/A
EdgePrism	206	0.01	192	0.01	7.53
SegPache	197	0.01	197	0.01	0.23
Hanbiro	195	0.01	204	0.01	-4.20
FJapache	193	0.01	199	0.01	-2.80
Apache-NeoNova	192	0.01	195	0.01	-1.32
Polaris	191	0.01	194	0.01	-1.32
BarracudaHTTP	184	0.00	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.