You are viewing an outdated report.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) 75,592,459 hostnames, but only 5,829,344 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	March 2015 Count	March 2015 %	February 2015 Count	February 2015 %	Growth %
Apache	3,074,778	52.75	3,075,261	53.17	-0.79
Microsoft-IIS	1,051,407	18.04	1,038,453	17.95	0.46
nginx	565,982	9.71	555,977	9.61	1.01
null	501,159	8.60	500,144	8.65	-0.57
Microsoft-HTTPAPI	172,614	2.96	171,791	2.97	-0.30
Apache-Coyote	62,699	1.08	61,547	1.06	1.08
IdeaWebServer	56,571	0.97	56,409	0.98	-0.49
cloudflare-nginx	44,053	0.76	26,872	0.46	62.67
IIS	36,380	0.62	34,810	0.60	3.70
LiteSpeed	32,851	0.56	32,749	0.57	-0.47
lighttpd	18,422	0.32	18,563	0.32	-1.53
BigIP	15,895	0.27	15,538	0.27	1.51
squid	11,053	0.19	10,718	0.19	2.33
A	10,246	0.18	10,324	0.18	-1.52
AkamaiGHost	8,803	0.15	9,197	0.16	-5.03
Rapidsite	8,227	0.14	8,342	0.14	-2.14
Lotus-Domino	7,868	0.13	7,901	0.14	-1.19
Tengine	5,324	0.09	5,236	0.09	0.89
sffe	5,153	0.09	5,087	0.09	0.51
Safedog	5,086	0.09	5,148	0.09	-1.97
Cowboy	4,730	0.08	4,447	0.08	5.54
WWW	4,631	0.08	4,552	0.08	0.95
IBM_HTTP_Server	4,134	0.07	4,183	0.07	-1.94
Varnish	3,282	0.06	3,202	0.06	1.70
Resin	2,725	0.05	2,676	0.05	1.04
kangle	2,598	0.04	2,727	0.05	-5.47
Zope	2,569	0.04	2,592	0.04	-1.65
AmazonS3	2,530	0.04	2,503	0.04	0.30
EZproxy	2,521	0.04	2,493	0.04	0.34
Oracle-Application-Server-10g	2,192	0.04	2,230	0.04	-2.47
Flywheel	2,185	0.04	2,028	0.04	6.91
GSHD	2,108	0.04	1,829	0.03	14.36
-	2,106	0.04	2,132	0.04	-1.98
WDaemon	1,677	0.03	1,662	0.03	0.12
openresty	1,652	0.03	1,614	0.03	1.56
CloudFront	1,647	0.03	1,332	0.02	22.69
Web	1,504	0.03	1,475	0.03	1.18
Cougar	1,385	0.02	1,407	0.02	-2.33
IceWarp	1,333	0.02	1,347	0.02	-1.81
xServers	1,274	0.02	1,253	0.02	0.89
GlassFish	1,219	0.02	1,219	0.02	-0.77
III	1,165	0.02	1,162	0.02	-0.52
Zeus	1,071	0.02	1,109	0.02	-4.17
Sun-ONE-Web-Server	1,022	0.02	1,038	0.02	-2.30
Rumpus	999	0.02	1,008	0.02	-1.66
Oracle-Application-Server-11g	982	0.02	977	0.02	-0.27
cpsrvd	945	0.02	934	0.02	0.39
thttpd	858	0.01	848	0.01	0.40
Bomgar	845	0.01	839	0.01	-0.06
Boa	773	0.01	767	0.01	0.00
smartcds	756	0.01	733	0.01	2.34
WebServer	742	0.01	746	0.01	-1.31
EdgePrism	730	0.01	743	0.01	-2.51
FC	723	0.01	826	0.01	-13.15
httpd	698	0.01	682	0.01	1.55
Oracle	687	0.01	682	0.01	-0.05
Sun	676	0.01	673	0.01	-0.33
CommuniGatePro	670	0.01	668	0.01	-0.48
Demandware	663	0.01	653	0.01	0.75
Pantheon	646	0.01	622	0.01	3.05
Cherokee	625	0.01	649	0.01	-4.44
Netscape-Enterprise	615	0.01	616	0.01	-0.94
*****************	614	0.01	564	0.01	8.02
PWS	600	0.01	654	0.01	-8.97
GWS	588	0.01	601	0.01	-2.92
ScreenConnect	567	0.01	550	0.01	2.29
ATS	555	0.01	590	0.01	-6.66
Sun-Java-System-Web-Server	526	0.01	528	0.01	-1.15
Apache-AdvancedExtranetServer	511	0.01	516	0.01	-1.74
redir-httpd	509	0.01	506	0.01	-0.19
FlashCom	503	0.01	480	0.01	3.98
kisa	495	0.01	492	0.01	-0.17
Oracle-iPlanet-Web-Server	486	0.01	478	0.01	0.89
Jetty	480	0.01	486	0.01	-2.00
ngx_openresty	448	0.01	465	0.01	-4.40
Kucci	446	0.01	0	0.00	N/A
SonicWALL	445	0.01	452	0.01	-2.31
YxlinkWAF	433	0.01	622	0.01	-30.92
TWebAP	431	0.01	424	0.01	0.86
Server	420	0.01	409	0.01	1.89
Google	420	0.01	420	0.01	-0.77
NOYB	419	0.01	421	0.01	-1.25
Abyss	404	0.01	407	0.01	-1.51
WS	399	0.01	402	0.01	-1.51
gunicorn	364	0.01	371	0.01	-2.65
Unknown	356	0.01	377	0.01	-6.30
SAP	354	0.01	348	0.01	0.94
yunjiasu-nginx	352	0.01	346	0.01	0.95
AnWeb	352	0.01	361	0.01	-3.25
WebServerX	338	0.01	337	0.01	-0.48
OpenCms	331	0.01	322	0.01	2.00
Footprint	329	0.01	320	0.01	2.02
NetBox	321	0.01	380	0.01	-16.18
QRATOR	319	0.01	309	0.01	2.44
WebtoB	316	0.01	325	0.01	-3.52
ghs	311	0.01	307	0.01	0.52
ASERVER	306	0.01	307	0.01	-1.10
Nginx	298	0.01	303	0.01	-2.41
WebSphere	293	0.01	301	0.01	-3.41
ODERLAND	292	0.01	619	0.01	-53.19

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.