You are viewing an outdated report.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) 48,021,314 hostnames, but only 4,227,747 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 2010 Count	October 2010 %	September 2010 Count	September 2010 %	Growth %
Apache	2,490,612	58.91	2,468,298	58.76	0.26
Microsoft-IIS	992,671	23.48	996,531	23.72	-1.02
null	319,669	7.56	318,863	7.59	-0.39
nginx	87,545	2.07	80,165	1.91	8.51
Rapidsite	50,960	1.21	51,251	1.22	-1.20
Apache-Coyote	39,436	0.93	39,391	0.94	-0.52
IdeaWebServer	32,496	0.77	31,887	0.76	1.26
Microsoft-HTTPAPI	30,981	0.73	28,886	0.69	6.57
A	17,394	0.41	17,426	0.41	-0.82
lighttpd	17,327	0.41	20,698	0.49	-16.82
Lotus-Domino	11,804	0.28	11,853	0.28	-1.05
LiteSpeed	10,355	0.24	9,555	0.23	7.68
IBM_HTTP_Server	6,542	0.15	6,532	0.16	-0.49
BigIP	5,046	0.12	4,900	0.12	2.32
squid	4,348	0.10	4,455	0.11	-3.02
Zope	4,164	0.10	4,215	0.10	-1.84
Oracle-Application-Server-10g	4,093	0.10	4,100	0.10	-0.81
Resin	3,345	0.08	3,401	0.08	-2.27
AkamaiGHost	3,026	0.07	2,665	0.06	12.82
Sun-ONE-Web-Server	2,948	0.07	2,990	0.07	-2.03
Netscape-Enterprise	2,911	0.07	3,055	0.07	-5.32
Zeus	2,904	0.07	2,930	0.07	-1.52
Cougar	2,363	0.06	2,336	0.06	0.51
WebServerX	1,686	0.04	1,661	0.04	0.86
GWS	1,676	0.04	1,696	0.04	-1.81
WDaemon	1,675	0.04	1,670	0.04	-0.34
Apache-AdvancedExtranetServer	1,602	0.04	1,639	0.04	-2.88
IceWarp	1,597	0.04	1,614	0.04	-1.68
EZproxy	1,549	0.04	1,525	0.04	0.93
HTTPD	1,500	0.04	1,282	0.03	16.26
apache	1,356	0.03	1,311	0.03	2.77
PowerSchool	1,354	0.03	1,328	0.03	1.31
Sun-Java-System-Web-Server	1,285	0.03	1,294	0.03	-1.33
Jetty	1,257	0.03	1,269	0.03	-1.58
Web	1,161	0.03	1,157	0.03	-0.29
III	1,159	0.03	1,148	0.03	0.31
thttpd	1,146	0.03	1,134	0.03	0.41
NOYB	1,107	0.03	1,164	0.03	-5.50
Oracle	1,096	0.03	1,118	0.03	-2.59
Boa	1,075	0.03	1,093	0.03	-2.27
httpd	1,050	0.02	938	0.02	11.23
CommuniGatePro	925	0.02	924	0.02	-0.53
IBM_HTTP_SERVER	906	0.02	933	0.02	-3.51
Ipswitch-IMail	860	0.02	866	0.02	-1.33
AnWeb	858	0.02	851	0.02	0.18
cpsrvd	856	0.02	850	0.02	0.06
Sun	799	0.02	792	0.02	0.24
WWW	791	0.02	802	0.02	-2.00
ListManagerWeb	737	0.02	729	0.02	0.45
WebSTAR	672	0.02	710	0.02	-5.96
WebtoB	647	0.02	657	0.02	-2.15
Cherokee	643	0.02	586	0.01	9.03
4D_WebStar_D	637	0.02	653	0.02	-3.07
FileMakerPro	624	0.01	635	0.02	-2.36
sffe	589	0.01	578	0.01	1.25
Rumpus	588	0.01	569	0.01	2.68
WebLogic	533	0.01	567	0.01	-6.60
redir-httpd	515	0.01	515	0.01	-0.64
AOLserver	511	0.01	506	0.01	0.34
BIG-IP	509	0.01	515	0.01	-1.79
DeleGate	489	0.01	487	0.01	-0.23
WebSite	481	0.01	489	0.01	-2.26
Secured	461	0.01	469	0.01	-2.33
WebSitePro	447	0.01	455	0.01	-2.38
Bomgar	425	0.01	401	0.01	5.31
Abyss	423	0.01	412	0.01	2.02
EdgePrism	422	0.01	413	0.01	1.53
JRun	421	0.01	431	0.01	-2.94
WebServer	412	0.01	392	0.01	4.43
4D_WebSTAR_S	393	0.01	402	0.01	-2.86
Varnish	389	0.01	363	0.01	6.48
Power	386	0.01	392	0.01	-2.16
WebSphere	370	0.01	372	0.01	-1.17
Server	362	0.01	352	0.01	2.19
xServers	359	0.01	336	0.01	6.16
Roxen	335	0.01	334	0.01	-0.34
""	327	0.01	343	0.01	-5.27
SAMBAR	321	0.01	331	0.01	-3.64
Indy	321	0.01	337	0.01	-5.35
SW	300	0.01	293	0.01	1.74
Stronghold	297	0.01	302	0.01	-2.28
IIS	278	0.01	282	0.01	-2.05
SAP	276	0.01	274	0.01	0.09
NetCache	271	0.01	271	0.01	-0.64
CloudFront	270	0.01	252	0.01	6.46
FC	265	0.01	260	0.01	1.27
Orion	258	0.01	263	0.01	-2.53
ENIAC	256	0.01	260	0.01	-2.17
IIS6	245	0.01	0	0.00	N/A
Ultraseek	243	0.01	245	0.01	-1.45
TimmiT	222	0.01	223	0.01	-1.08
Hanbiro	221	0.01	224	0.01	-1.97
NetBox	213	0.01	200	0.00	5.82
Oracle9iAS	212	0.01	214	0.01	-1.57
OpenCms	211	0.00	202	0.00	3.79
httpd+ssl	202	0.00	211	0.01	-4.88
Xitami	198	0.00	193	0.00	1.94
OSU	198	0.00	203	0.00	-3.08
VB	197	0.00	195	0.00	0.38
RomPager	196	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.