You are viewing an outdated report.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) 27,374,802 hostnames, but only 3,390,128 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	February 2008 Count	February 2008 %	January 2008 Count	January 2008 %	Growth %
Apache	1,965,291	57.97	1,943,987	57.80	0.30
Microsoft-IIS	931,429	27.47	931,427	27.69	-0.79
null	207,842	6.13	205,038	6.10	0.57
Rapidsite	67,691	2.00	67,358	2.00	-0.29
Apache-Coyote	22,182	0.65	21,766	0.65	1.11
IdeaWebServer	16,559	0.49	15,977	0.48	2.83
A	15,864	0.47	15,676	0.47	0.40
Lotus-Domino	13,799	0.41	13,886	0.41	-1.41
Netscape-Enterprise	10,915	0.32	11,074	0.33	-2.21
nginx	9,700	0.29	8,962	0.27	7.38
lighttpd	8,882	0.26	8,486	0.25	3.84
IBM_HTTP_Server	4,817	0.14	4,747	0.14	0.68
Zope	4,425	0.13	4,424	0.13	-0.76
Zeus	4,387	0.13	4,516	0.13	-3.62
Apache-AdvancedExtranetServer	4,289	0.13	4,444	0.13	-4.25
WebServer	4,096	0.12	4,046	0.12	0.44
Sun-ONE-Web-Server	3,977	0.12	3,950	0.12	-0.11
NOYB	3,356	0.10	3,254	0.10	2.32
squid	3,287	0.10	3,260	0.10	0.04
Oracle-Application-Server-10g	3,231	0.10	3,192	0.09	0.43
Resin	3,193	0.09	3,197	0.10	-0.91
IBM_HTTP_SERVER	1,990	0.06	2,002	0.06	-1.38
Cougar	1,964	0.06	1,961	0.06	-0.63
Ipswitch-IMail	1,739	0.05	1,791	0.05	-3.67
WebServerX	1,727	0.05	1,778	0.05	-3.63
GWS	1,598	0.05	1,545	0.05	2.62
IceWarp	1,581	0.05	1,560	0.05	0.55
Jetty	1,556	0.05	1,564	0.05	-1.29
WebSTAR	1,494	0.04	1,541	0.05	-3.81
WDaemon	1,486	0.04	1,459	0.04	1.05
Oracle	1,474	0.04	1,479	0.04	-1.12
WebLogic	1,223	0.04	1,233	0.04	-1.59
FileMakerPro	1,187	0.04	1,225	0.04	-3.86
Boa	1,187	0.04	1,211	0.04	-2.75
WebSite	1,113	0.03	1,133	0.03	-2.54
BIG-IP	1,111	0.03	1,161	0.03	-5.06
III	1,039	0.03	1,019	0.03	1.16
AkamaiGHost	1,034	0.03	1,120	0.03	-8.40
WebSitePro	1,018	0.03	1,026	0.03	-1.56
thttpd	988	0.03	1,013	0.03	-3.23
AnWeb	985	0.03	1,016	0.03	-3.81
CommuniGatePro	983	0.03	973	0.03	0.23
EZproxy	932	0.03	924	0.03	0.07
PowerSchool	931	0.03	907	0.03	1.84
4D_WebSTAR_S	881	0.03	907	0.03	-3.63
LiteSpeed	849	0.03	836	0.02	0.76
httpd+ssl	808	0.02	791	0.02	1.35
Web	788	0.02	740	0.02	5.65
EdgePrism	782	0.02	757	0.02	2.49
BigIP	716	0.02	598	0.02	18.79
AOLserver	711	0.02	723	0.02	-2.43
WebtoB	654	0.02	630	0.02	2.99
4D_WebStar_D	652	0.02	639	0.02	1.23
cpsrvd	622	0.02	638	0.02	-3.27
Stronghold	578	0.02	607	0.02	-5.53
SAMBAR	541	0.02	549	0.02	-2.23
DeleGate	534	0.02	538	0.02	-1.52
redir-httpd	503	0.01	507	0.02	-1.57
Oracle9iAS	495	0.01	517	0.02	-5.01
ListManagerWeb	474	0.01	464	0.01	1.35
NetWare-Enterprise-Web-Server	473	0.01	487	0.01	-3.64
NetCache	457	0.01	453	0.01	0.09
Abyss	446	0.01	433	0.01	2.19
httpd	416	0.01	399	0.01	3.44
Roxen	414	0.01	414	0.01	-0.79
WWW	412	0.01	399	0.01	2.45
Orion	406	0.01	410	0.01	-1.75
ENIAC	402	0.01	342	0.01	16.62
Nost	388	0.01	314	0.01	22.60
WebSphere	385	0.01	404	0.01	-5.45
Netscape-FastTrack	383	0.01	397	0.01	-4.28
Sun-Java-System-Web-Server	382	0.01	359	0.01	5.57
Ultraseek	359	0.01	358	0.01	-0.51
Microsoft-HTTPAPI	355	0.01	353	0.01	-0.22
Blocked	351	0.01	350	0.01	-0.50
NCSA	339	0.01	381	0.01	-11.72
""	339	0.01	329	0.01	2.23
IBM-HTTP-Server	332	0.01	350	0.01	-5.89
JRun	317	0.01	305	0.01	3.12
Acenet	315	0.01	354	0.01	-11.72
Secured	313	0.01	298	0.01	4.21
OSU	311	0.01	322	0.01	-4.17
Xitami	304	0.01	317	0.01	-4.85
Power	302	0.01	326	0.01	-8.09
NS_6.1	293	0.01	282	0.01	3.08
Indy	288	0.01	280	0.01	2.05
gws	278	0.01	254	0.01	8.59
IIS	268	0.01	250	0.01	6.36
Mittwald	259	0.01	246	0.01	4.46
Server	246	0.01	240	0.01	1.69
FirstClass	238	0.01	253	0.01	-6.67
Jeus	231	0.01	228	0.01	0.52
Polaris	218	0.01	210	0.01	2.99
AppleShareIP	209	0.01	216	0.01	-4.00
Rumpus	204	0.01	194	0.01	4.33
Apache-NeoNova	197	0.01	192	0.01	1.80
FJapache	189	0.01	187	0.01	0.28
CoralWebPrx	189	0.01	190	0.01	-1.31
DinaHTTPd	187	0.01	0	0.00	N/A
UserLand	184	0.01	189	0.01	-3.41

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.