You are viewing an outdated report.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) 42,363,441 hostnames, but only 3,957,599 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 2010 Count	February 2010 %	January 2010 Count	January 2010 %	Growth %
Apache	2,315,973	58.52	2,300,952	58.53	-0.02
Microsoft-IIS	973,536	24.60	972,173	24.73	-0.53
null	299,228	7.56	296,554	7.54	0.23
Rapidsite	55,150	1.39	55,245	1.41	-0.84
nginx	54,648	1.38	49,884	1.27	8.82
Apache-Coyote	33,998	0.86	34,148	0.87	-1.10
IdeaWebServer	28,182	0.71	27,672	0.70	1.17
lighttpd	18,678	0.47	18,503	0.47	0.27
A	17,880	0.45	17,830	0.45	-0.39
Microsoft-HTTPAPI	16,808	0.42	15,322	0.39	8.97
Lotus-Domino	12,226	0.31	12,312	0.31	-1.36
LiteSpeed	6,437	0.16	5,786	0.15	10.51
IBM_HTTP_Server	6,318	0.16	6,307	0.16	-0.49
Zope	4,354	0.11	4,372	0.11	-1.07
squid	4,284	0.11	4,188	0.11	1.61
Oracle-Application-Server-10g	4,007	0.10	4,000	0.10	-0.49
BigIP	3,850	0.10	3,690	0.09	3.64
Netscape-Enterprise	3,756	0.09	3,887	0.10	-4.01
Sun-ONE-Web-Server	3,387	0.09	3,441	0.09	-2.22
Resin	3,360	0.08	3,396	0.09	-1.72
Zeus	3,241	0.08	3,321	0.08	-3.06
AkamaiGHost	2,744	0.07	2,565	0.07	6.27
Cougar	2,368	0.06	2,333	0.06	0.82
Apache-AdvancedExtranetServer	2,001	0.05	2,091	0.05	-4.94
GWS	1,870	0.05	1,868	0.05	-0.56
WDaemon	1,572	0.04	1,590	0.04	-1.79
IceWarp	1,550	0.04	1,555	0.04	-0.98
WebServerX	1,474	0.04	1,448	0.04	1.12
NOYB	1,463	0.04	1,554	0.04	-6.48
EZproxy	1,392	0.04	1,372	0.03	0.78
Jetty	1,389	0.04	1,406	0.04	-1.87
WWW	1,342	0.03	1,391	0.04	-4.16
Web	1,245	0.03	1,250	0.03	-1.06
PowerSchool	1,203	0.03	1,169	0.03	2.22
Oracle	1,203	0.03	1,209	0.03	-1.16
IBM_HTTP_SERVER	1,165	0.03	1,208	0.03	-4.20
Boa	1,156	0.03	1,133	0.03	1.35
Sun-Java-System-Web-Server	1,135	0.03	1,090	0.03	3.44
III	1,129	0.03	1,129	0.03	-0.67
thttpd	1,096	0.03	1,105	0.03	-1.47
Ipswitch-IMail	1,005	0.03	1,022	0.03	-2.32
CommuniGatePro	964	0.02	963	0.02	-0.56
WebLogic	915	0.02	942	0.02	-3.51
AnWeb	915	0.02	918	0.02	-0.99
httpd	831	0.02	821	0.02	0.54
WebSTAR	810	0.02	821	0.02	-2.00
HTTPD	793	0.02	744	0.02	5.88
cpsrvd	761	0.02	760	0.02	-0.53
apache	752	0.02	729	0.02	2.47
FileMakerPro	742	0.02	760	0.02	-3.02
ListManagerWeb	704	0.02	698	0.02	0.19
4D_WebStar_D	686	0.02	687	0.02	-0.81
Sun	658	0.02	643	0.02	1.65
BIG-IP	646	0.02	695	0.02	-7.67
gws	639	0.02	585	0.01	8.50
WebtoB	624	0.02	649	0.02	-4.49
Windows	589	0.01	529	0.01	10.60
WebSite	561	0.01	576	0.01	-3.25
AOLserver	530	0.01	537	0.01	-1.96
WebSitePro	522	0.01	534	0.01	-2.90
DeleGate	518	0.01	520	0.01	-1.05
redir-httpd	515	0.01	515	0.01	-0.67
ThirdSphere	471	0.01	479	0.01	-2.32
Rumpus	464	0.01	447	0.01	3.11
4D_WebSTAR_S	460	0.01	468	0.01	-2.36
Power	438	0.01	460	0.01	-5.42
Secured	433	0.01	425	0.01	1.20
JRun	426	0.01	431	0.01	-1.82
Abyss	416	0.01	415	0.01	-0.43
WebServer	396	0.01	602	0.02	-34.66
""	386	0.01	378	0.01	1.44
SAMBAR	374	0.01	385	0.01	-3.50
WebSphere	362	0.01	377	0.01	-4.62
Roxen	362	0.01	366	0.01	-1.75
Server	359	0.01	363	0.01	-1.76
Cherokee	345	0.01	305	0.01	12.36
Stronghold	343	0.01	341	0.01	-0.08
NetCache	323	0.01	318	0.01	0.90
Indy	321	0.01	327	0.01	-2.49
ENIAC	308	0.01	319	0.01	-4.09
Orion	290	0.01	291	0.01	-1.01
Bomgar	283	0.01	264	0.01	6.48
Ultraseek	276	0.01	280	0.01	-2.08
IIS	274	0.01	268	0.01	1.56
EdgePrism	264	0.01	239	0.01	9.73
CoralWebPrx	264	0.01	280	0.01	-6.34
Oracle9iAS	263	0.01	270	0.01	-3.24
SAP	256	0.01	255	0.01	-0.28
httpd+ssl	243	0.01	244	0.01	-1.07
Kerio	239	0.01	240	0.01	-1.08
Varnish	237	0.01	218	0.01	7.99
Xitami	236	0.01	231	0.01	1.48
OSU	222	0.01	228	0.01	-3.28
FC	222	0.01	201	0.01	9.71
CloudFront	222	0.01	213	0.01	3.53
JS	220	0.01	248	0.01	-11.88
Hanbiro	213	0.01	205	0.01	3.21
SW	210	0.01	215	0.01	-2.98
NCSA	208	0.01	220	0.01	-6.08
VB	204	0.01	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.