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) 46,563,031 hostnames, but only 3,345,952 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 2025 Count	March 2025 %	February 2025 Count	February 2025 %	Growth %
Apache	1,113,814	33.29	1,120,056	33.33	-0.14
nginx	1,062,156	31.74	1,059,185	31.52	0.70
null	367,154	10.97	369,125	10.99	-0.12
Microsoft-IIS	173,064	5.17	174,385	5.19	-0.34
Microsoft-HTTPAPI	147,110	4.40	147,300	4.38	0.29
cloudflare	101,691	3.04	101,579	3.02	0.53
LiteSpeed	93,204	2.79	99,840	2.97	-6.25
awselb	34,219	1.02	28,948	0.86	18.71
openresty	27,513	0.82	26,882	0.80	2.78
IdeaWebServer	26,195	0.78	26,430	0.79	-0.47
CloudFront	21,033	0.63	22,173	0.66	-4.74
AmazonS3	20,065	0.60	20,022	0.60	0.64
Nginx	18,778	0.56	20,585	0.61	-8.39
BigIP	18,368	0.55	18,656	0.56	-1.13
AkamaiGHost	12,711	0.38	15,005	0.45	-14.93
Tengine	9,601	0.29	9,970	0.30	-3.30
Caddy	7,423	0.22	7,300	0.22	2.11
nginx-rc	6,208	0.19	6,208	0.18	0.42
Apache-Coyote	5,228	0.16	5,302	0.16	-0.98
Microsoft-Azure-Application-Gateway	5,062	0.15	5,040	0.15	0.86
wts	3,953	0.12	4,352	0.13	-8.79
nginx-reuseport	3,296	0.10	3,297	0.10	0.39
ddos-guard	3,154	0.09	3,125	0.09	1.35
Varnish	2,929	0.09	2,942	0.09	-0.02
lighttpd	1,923	0.06	1,936	0.06	-0.25
Aws	1,914	0.06	1,921	0.06	0.05
EZproxy	1,687	0.05	1,708	0.05	-0.81
hcdn	1,258	0.04	1,236	0.04	2.21
o2switch-PowerBoost-v3	1,248	0.04	1,225	0.04	2.31
AliyunOSS	1,188	0.04	1,160	0.03	2.84
Lotus-Domino	1,132	0.03	1,126	0.03	0.96
F-WEB	1,059	0.03	1,037	0.03	2.55
aruba-proxy	1,016	0.03	1,017	0.03	0.32
Golang.Server	970	0.03	965	0.03	0.94
Icecast	923	0.03	938	0.03	-1.19
CW	913	0.03	875	0.03	4.78
QRATOR	896	0.03	901	0.03	-0.14
Server	845	0.03	833	0.02	1.87
rdwr	758	0.02	750	0.02	1.49
sffe	697	0.02	762	0.02	-8.15
******	527	0.02	508	0.02	4.18
IceWarp	519	0.02	524	0.02	-0.54
squid	515	0.02	536	0.02	-3.51
namecheap-nginx	514	0.02	514	0.02	0.42
elb	501	0.01	505	0.02	-0.37
Safedog	493	0.01	800	0.02	-38.12
stgw	490	0.01	491	0.01	0.22
OpenBSD	485	0.01	482	0.01	1.05
Web	476	0.01	472	0.01	1.27
istio-envoy	471	0.01	456	0.01	3.72
redir-httpd	433	0.01	433	0.01	0.42
envoy	430	0.01	434	0.01	-0.50
WAF	401	0.01	438	0.01	-8.06
myracloud	385	0.01	385	0.01	0.42
eClass	382	0.01	382	0.01	0.42
none	379	0.01	368	0.01	3.42
Kestrel	379	0.01	367	0.01	3.70
Angie	375	0.01	365	0.01	3.17
Windows-Azure-Blob	370	0.01	375	0.01	-0.92
volt-adc	368	0.01	347	0.01	6.50
ldweb	351	0.01	346	0.01	1.87
WVS	351	0.01	346	0.01	1.87
kangle	348	0.01	346	0.01	1.00
Odoo.sh	331	0.01	314	0.01	5.86
WWW	320	0.01	346	0.01	-7.13
UploadServer	310	0.01	315	0.01	-1.17
OVHcloud	308	0.01	310	0.01	-0.23
*********	294	0.01	278	0.01	6.20
OOS	273	0.01	273	0.01	0.42
WDaemon	267	0.01	270	0.01	-0.70
JSP3	249	0.01	245	0.01	2.06
cc-web	237	0.01	240	0.01	-0.83
IIS	237	0.01	236	0.01	0.85
LTC-h3	222	0.01	221	0.01	0.88
cdn	220	0.01	229	0.01	-3.53
ghs	216	0.01	225	0.01	-3.60
ArvanCloud	211	0.01	212	0.01	-0.05
Destiny	210	0.01	209	0.01	0.90
Windows-Azure-Web	206	0.01	207	0.01	-0.06
ATS	206	0.01	169	0.01	22.41
snow_adc	203	0.01	198	0.01	2.96
*	198	0.01	199	0.01	-0.08
Resin	196	0.01	192	0.01	2.51
**********	196	0.01	200	0.01	-1.59
GlassFish	192	0.01	193	0.01	-0.10
cmproxy	189	0.01	182	0.01	4.28
BigScoots	182	0.01	182	0.01	0.42
Rumpus	172	0.01	173	0.01	-0.16
web	171	0.01	0	0.00	N/A
CloudWAF	171	0.01	202	0.01	-14.99
SY8045	166	0.00	167	0.00	-0.18
4D	163	0.00	160	0.00	2.30
gunicorn	161	0.00	156	0.00	3.64
ClausWeb-nginx	160	0.00	158	0.00	1.69
kittenx	159	0.00	164	0.00	-2.64
proxygen-bolt	158	0.00	171	0.01	-7.21
Sucuri	158	0.00	156	0.00	1.71
Fly	157	0.00	159	0.00	-0.84
webserver	154	0.00	147	0.00	5.20
CommuniGatePro	154	0.00	155	0.00	-0.23

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.