You are viewing an outdated report.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) 47,292,193 hostnames, but only 4,167,890 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	August 2010 Count	August 2010 %	July 2010 Count	July 2010 %	Growth %
Apache	2,449,144	58.76	2,432,019	58.73	0.06
Microsoft-IIS	992,812	23.82	992,025	23.96	-0.56
null	315,974	7.58	313,487	7.57	0.15
nginx	76,248	1.83	72,908	1.76	3.91
Rapidsite	51,711	1.24	52,249	1.26	-1.67
Apache-Coyote	38,749	0.93	38,277	0.92	0.58
IdeaWebServer	31,306	0.75	30,718	0.74	1.26
Microsoft-HTTPAPI	27,053	0.65	25,417	0.61	5.75
lighttpd	20,261	0.49	20,108	0.49	0.11
A	17,463	0.42	17,466	0.42	-0.66
Lotus-Domino	11,902	0.29	11,957	0.29	-1.10
LiteSpeed	9,226	0.22	8,631	0.21	6.21
IBM_HTTP_Server	6,538	0.16	6,496	0.16	-0.00
BigIP	4,738	0.11	4,561	0.11	3.21
squid	4,411	0.11	4,453	0.11	-1.58
Zope	4,239	0.10	4,232	0.10	-0.48
Oracle-Application-Server-10g	4,074	0.10	4,065	0.10	-0.42
Resin	3,346	0.08	3,383	0.08	-1.73
Netscape-Enterprise	3,182	0.08	3,240	0.08	-2.42
Sun-ONE-Web-Server	3,059	0.07	3,102	0.07	-2.02
AkamaiGHost	2,979	0.07	2,888	0.07	2.49
Zeus	2,929	0.07	2,958	0.07	-1.62
Cougar	2,356	0.06	2,373	0.06	-1.35
GWS	1,712	0.04	1,727	0.04	-1.51
Apache-AdvancedExtranetServer	1,674	0.04	1,728	0.04	-3.75
WDaemon	1,663	0.04	1,664	0.04	-0.70
WebServerX	1,633	0.04	1,512	0.04	7.31
IceWarp	1,592	0.04	1,580	0.04	0.11
EZproxy	1,502	0.04	1,492	0.04	0.02
NOYB	1,300	0.03	1,365	0.03	-5.37
PowerSchool	1,291	0.03	1,282	0.03	0.05
Jetty	1,286	0.03	1,308	0.03	-2.31
apache	1,263	0.03	1,228	0.03	2.19
Sun-Java-System-Web-Server	1,262	0.03	1,240	0.03	1.12
Web	1,154	0.03	1,161	0.03	-1.24
thttpd	1,147	0.03	1,144	0.03	-0.38
III	1,146	0.03	1,144	0.03	-0.47
Oracle	1,127	0.03	1,141	0.03	-1.86
HTTPD	1,120	0.03	1,073	0.03	3.71
Boa	1,119	0.03	1,109	0.03	0.25
IBM_HTTP_SERVER	948	0.02	988	0.02	-4.67
CommuniGatePro	923	0.02	922	0.02	-0.53
WWW	889	0.02	1,104	0.03	-19.99
Ipswitch-IMail	874	0.02	909	0.02	-4.47
AnWeb	864	0.02	921	0.02	-6.79
httpd	863	0.02	854	0.02	0.40
cpsrvd	836	0.02	815	0.02	1.92
Sun	784	0.02	762	0.02	2.23
WebSTAR	740	0.02	750	0.02	-1.97
ListManagerWeb	719	0.02	709	0.02	0.76
FileMakerPro	649	0.02	666	0.02	-3.18
WebtoB	647	0.02	651	0.02	-1.25
4D_WebStar_D	627	0.02	621	0.01	0.32
sffe	623	0.01	626	0.02	-1.12
WebLogic	562	0.01	578	0.01	-3.39
Rumpus	562	0.01	545	0.01	2.46
Cherokee	547	0.01	539	0.01	0.83
BIG-IP	518	0.01	514	0.01	0.13
redir-httpd	513	0.01	515	0.01	-1.03
WebSite	512	0.01	516	0.01	-1.41
AOLserver	506	0.01	516	0.01	-2.57
DeleGate	483	0.01	481	0.01	-0.23
Secured	479	0.01	507	0.01	-6.13
WebSitePro	465	0.01	473	0.01	-2.32
JRun	417	0.01	426	0.01	-2.74
Abyss	414	0.01	409	0.01	0.57
Power	404	0.01	399	0.01	0.60
4D_WebSTAR_S	400	0.01	415	0.01	-4.23
WebServer	398	0.01	407	0.01	-2.84
EdgePrism	393	0.01	390	0.01	0.12
Bomgar	390	0.01	367	0.01	5.58
WebSphere	372	0.01	370	0.01	-0.11
Server	349	0.01	359	0.01	-3.41
Varnish	343	0.01	334	0.01	2.03
Roxen	341	0.01	345	0.01	-1.79
""	336	0.01	340	0.01	-1.81
SAMBAR	332	0.01	342	0.01	-3.55
Indy	325	0.01	319	0.01	1.23
Stronghold	301	0.01	306	0.01	-2.27
SW	301	0.01	257	0.01	16.37
NetCache	296	0.01	303	0.01	-2.94
ENIAC	282	0.01	286	0.01	-2.03
IIS	272	0.01	266	0.01	1.60
SAP	269	0.01	277	0.01	-3.51
xServers	264	0.01	0	0.00	N/A
FC	261	0.01	265	0.01	-2.14
Orion	259	0.01	271	0.01	-5.04
Ultraseek	252	0.01	259	0.01	-3.33
CloudFront	247	0.01	248	0.01	-1.04
ThirdSphere	244	0.01	331	0.01	-26.76
http	242	0.01	188	0.00	27.90
TimmiT	229	0.01	215	0.01	5.83
Kerio	229	0.01	250	0.01	-8.99
Hanbiro	222	0.01	217	0.01	1.65
Oracle9iAS	221	0.01	230	0.01	-4.53
httpd+ssl	215	0.01	221	0.01	-3.34
OSU	211	0.01	211	0.01	-0.64
CoralWebPrx	209	0.01	215	0.01	-3.42
BarracudaHTTP	201	0.00	205	0.00	-2.58
VB	199	0.00	204	0.00	-3.08

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.