You are viewing an outdated report.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) 85,885,069 hostnames, but only 5,732,036 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	December 2015 Count	December 2015 %	November 2015 Count	November 2015 %	Growth %
Apache	3,003,510	52.40	3,010,929	52.70	-0.57
Microsoft-IIS	917,044	16.00	922,462	16.15	-0.91
nginx	689,863	12.04	662,292	11.59	3.83
null	441,180	7.70	443,088	7.76	-0.75
Microsoft-HTTPAPI	198,332	3.46	196,049	3.43	0.84
cloudflare-nginx	65,464	1.14	62,816	1.10	3.88
Apache-Coyote	62,395	1.09	63,264	1.11	-1.69
IdeaWebServer	57,240	1.00	57,048	1.00	0.01
LiteSpeed	36,417	0.64	38,485	0.67	-5.68
IIS	20,337	0.35	19,621	0.34	3.31
BigIP	19,656	0.34	19,244	0.34	1.81
lighttpd	15,027	0.26	15,314	0.27	-2.19
squid	11,146	0.19	10,523	0.18	5.58
AkamaiGHost	10,931	0.19	11,193	0.20	-2.66
A	9,269	0.16	9,462	0.17	-2.36
Tengine	7,558	0.13	6,220	0.11	21.12
Lotus-Domino	6,950	0.12	7,085	0.12	-2.22
Rapidsite	6,614	0.12	6,995	0.12	-5.75
Cowboy	5,665	0.10	5,539	0.10	1.94
WWW	5,523	0.10	5,513	0.10	-0.14
sffe	4,729	0.08	4,749	0.08	-0.74
Safedog	4,714	0.08	4,329	0.08	8.54
GSHD	4,178	0.07	2,906	0.05	43.31
Flywheel	4,096	0.07	3,806	0.07	7.27
Varnish	3,908	0.07	3,800	0.07	2.51
AmazonS3	3,394	0.06	3,379	0.06	0.12
kangle	3,018	0.05	2,951	0.05	1.94
IBM_HTTP_Server	2,928	0.05	3,092	0.05	-5.61
EZproxy	2,617	0.05	2,636	0.05	-1.04
openresty	2,558	0.04	2,392	0.04	6.59
CloudFront	2,495	0.04	1,960	0.03	26.88
-	2,453	0.04	2,526	0.04	-3.20
Resin	2,445	0.04	2,575	0.05	-5.36
Zope	2,311	0.04	2,350	0.04	-1.98
Oracle-Application-Server-10g	1,733	0.03	1,792	0.03	-3.61
WDaemon	1,568	0.03	1,587	0.03	-1.52
xServers	1,407	0.02	1,382	0.02	1.48
Web	1,396	0.02	1,403	0.02	-0.82
IceWarp	1,283	0.02	1,281	0.02	-0.17
GlassFish	1,281	0.02	1,308	0.02	-2.38
III	1,133	0.02	1,143	0.02	-1.20
Cougar	1,059	0.02	1,092	0.02	-3.34
Pantheon	1,042	0.02	969	0.02	7.19
cpsrvd	966	0.02	949	0.02	1.46
smartcds	943	0.02	919	0.02	2.28
Oracle-Application-Server-11g	942	0.02	943	0.02	-0.43
Rumpus	941	0.02	980	0.02	-4.29
CHO	836	0.01	0	0.00	N/A
Bomgar	823	0.01	823	0.01	-0.32
Sun-ONE-Web-Server	818	0.01	850	0.01	-4.08
YxlinkWAF	786	0.01	788	0.01	-0.58
ScreenConnect	780	0.01	769	0.01	1.10
NetBox	760	0.01	613	0.01	23.58
WebServer	752	0.01	737	0.01	1.71
thttpd	750	0.01	761	0.01	-1.76
ATS	739	0.01	664	0.01	10.94
Advanced	707	0.01	694	0.01	1.54
*****************	694	0.01	647	0.01	6.92
Boa	681	0.01	699	0.01	-2.89
PWS	676	0.01	684	0.01	-1.49
httpd	671	0.01	661	0.01	1.18
Oracle	637	0.01	657	0.01	-3.36
Zeus	630	0.01	653	0.01	-3.83
EdgePrism	615	0.01	656	0.01	-6.55
XiakeWeb	605	0.01	2,412	0.04	-75.00
CommuniGatePro	601	0.01	611	0.01	-1.95
Sun	593	0.01	595	0.01	-0.66
kisa	522	0.01	516	0.01	0.84
Cherokee	518	0.01	545	0.01	-5.26
redir-httpd	506	0.01	507	0.01	-0.52
SonicWALL	485	0.01	482	0.01	0.30
Oracle-iPlanet-Web-Server	476	0.01	483	0.01	-1.77
Icecast	466	0.01	455	0.01	2.09
Server	455	0.01	448	0.01	1.23
TWebAP	444	0.01	430	0.01	2.92
Netscape-Enterprise	444	0.01	462	0.01	-4.21
GWS	427	0.01	452	0.01	-5.84
Apache-AdvancedExtranetServer	422	0.01	436	0.01	-3.52
Google	416	0.01	413	0.01	0.40
WowzaStreamingEngine	411	0.01	391	0.01	4.77
Nginx-VPSSIM	410	0.01	379	0.01	7.83
gunicorn	393	0.01	391	0.01	0.19
Abyss	393	0.01	380	0.01	3.09
FlashCom	381	0.01	392	0.01	-3.12
Jetty	379	0.01	387	0.01	-2.38
Unknown	377	0.01	363	0.01	3.52
QRATOR	375	0.01	365	0.01	2.41
ngx_openresty	372	0.01	389	0.01	-4.68
NginxPlus	355	0.01	326	0.01	8.54
yunjiasu-nginx	342	0.01	363	0.01	-6.09
SAP	339	0.01	340	0.01	-0.62
Protected	333	0.01	0	0.00	N/A
Sun-Java-System-Web-Server	332	0.01	386	0.01	-14.27
cc-web	330	0.01	332	0.01	-0.92
WS	328	0.01	351	0.01	-6.86
ghs	326	0.01	338	0.01	-3.86
HTTP	306	0.01	294	0.01	3.74
GSYQ	306	0.01	774	0.01	-60.59
unknown	304	0.01	306	0.01	-0.98
WebServerX	299	0.01	309	0.01	-3.55

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.