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Survey Data Mining: Home | FAQ | Archive | Glossary |
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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:
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:
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 | September 2021 Count |
September 2021 % |
August 2021 Count |
August 2021 % |
Growth % |
Apache | 1,813,070 | 39.06 | 1,829,505 | 39.16 | -0.23 |
nginx | 1,372,498 | 29.57 | 1,367,035 | 29.26 | 1.07 |
Microsoft-IIS | 376,891 | 8.12 | 386,020 | 8.26 | -1.71 |
null | 372,890 | 8.03 | 376,176 | 8.05 | -0.21 |
Microsoft-HTTPAPI | 167,863 | 3.62 | 170,622 | 3.65 | -0.96 |
cloudflare | 100,559 | 2.17 | 100,195 | 2.14 | 1.04 |
LiteSpeed | 75,570 | 1.63 | 74,907 | 1.60 | 1.56 |
Nginx | 57,774 | 1.24 | 59,462 | 1.27 | -2.19 |
IdeaWebServer | 38,208 | 0.82 | 38,432 | 0.82 | 0.08 |
awselb | 28,823 | 0.62 | 28,907 | 0.62 | 0.38 |
BigIP | 28,219 | 0.61 | 28,290 | 0.61 | 0.42 |
openresty | 21,500 | 0.46 | 21,659 | 0.46 | -0.07 |
Tengine | 17,382 | 0.37 | 19,302 | 0.41 | -9.34 |
AmazonS3 | 16,543 | 0.36 | 16,569 | 0.35 | 0.51 |
Apache-Coyote | 15,892 | 0.34 | 16,303 | 0.35 | -1.87 |
AkamaiGHost | 15,266 | 0.33 | 15,983 | 0.34 | -3.84 |
CloudFront | 7,180 | 0.15 | 7,431 | 0.16 | -2.73 |
nginx-rc | 6,271 | 0.14 | 6,200 | 0.13 | 1.82 |
Flywheel | 5,991 | 0.13 | 6,062 | 0.13 | -0.51 |
wts | 5,405 | 0.12 | 5,200 | 0.11 | 4.64 |
nginx-reuseport | 4,072 | 0.09 | 4,116 | 0.09 | -0.40 |
Varnish | 3,820 | 0.08 | 4,044 | 0.09 | -4.90 |
lighttpd | 3,774 | 0.08 | 3,836 | 0.08 | -0.96 |
Caddy | 3,638 | 0.08 | 3,568 | 0.08 | 2.65 |
aeserver | 3,586 | 0.08 | 3,532 | 0.08 | 2.21 |
EZproxy | 2,406 | 0.05 | 2,417 | 0.05 | 0.21 |
Lotus-Domino | 2,324 | 0.05 | 2,344 | 0.05 | -0.19 |
Microsoft-Azure-Application-Gateway | 2,135 | 0.05 | 2,052 | 0.04 | 4.74 |
Server | 1,238 | 0.03 | 1,305 | 0.03 | -4.50 |
Safedog | 1,202 | 0.03 | 1,151 | 0.02 | 5.13 |
scl | 1,172 | 0.03 | 1,161 | 0.02 | 1.63 |
AliyunOSS | 1,070 | 0.02 | 1,094 | 0.02 | -1.54 |
squid | 955 | 0.02 | 1,001 | 0.02 | -3.95 |
WWW | 941 | 0.02 | 1,064 | 0.02 | -10.97 |
Icecast | 941 | 0.02 | 949 | 0.02 | -0.18 |
ddos-guard | 861 | 0.02 | 820 | 0.02 | 5.70 |
- | 798 | 0.02 | 773 | 0.02 | 3.93 |
VWebServer | 768 | 0.02 | 787 | 0.02 | -1.76 |
IceWarp | 768 | 0.02 | 780 | 0.02 | -0.88 |
o2switch-PowerBoost-v3 | 730 | 0.02 | 724 | 0.02 | 1.51 |
kangle | 724 | 0.02 | 748 | 0.02 | -2.56 |
Kestrel | 689 | 0.01 | 647 | 0.01 | 7.21 |
WDaemon | 586 | 0.01 | 588 | 0.01 | 0.33 |
Destiny | 583 | 0.01 | 584 | 0.01 | 0.50 |
Cowboy | 565 | 0.01 | 685 | 0.01 | -16.96 |
IIS | 536 | 0.01 | 556 | 0.01 | -2.95 |
ATS | 515 | 0.01 | 491 | 0.01 | 5.59 |
GlassFish | 514 | 0.01 | 525 | 0.01 | -1.44 |
ws-httpd | 511 | 0.01 | 750 | 0.02 | -31.41 |
ScreenConnect | 511 | 0.01 | 512 | 0.01 | 0.47 |
OpenBSD | 496 | 0.01 | 496 | 0.01 | 0.67 |
Resin | 494 | 0.01 | 496 | 0.01 | 0.27 |
aruba-proxy | 490 | 0.01 | 490 | 0.01 | 0.67 |
Firewall | 486 | 0.01 | 513 | 0.01 | -4.63 |
CHO | 477 | 0.01 | 480 | 0.01 | 0.04 |
redir-httpd | 472 | 0.01 | 472 | 0.01 | 0.67 |
QRATOR | 465 | 0.01 | 467 | 0.01 | 0.24 |
Zope | 452 | 0.01 | 459 | 0.01 | -0.86 |
Web | 444 | 0.01 | 456 | 0.01 | -1.98 |
ECAcc | 410 | 0.01 | 412 | 0.01 | 0.18 |
sffe | 405 | 0.01 | 547 | 0.01 | -25.46 |
elb | 400 | 0.01 | 395 | 0.01 | 1.95 |
****** | 390 | 0.01 | 399 | 0.01 | -1.60 |
WVS | 380 | 0.01 | 354 | 0.01 | 8.07 |
Swan | 375 | 0.01 | 0 | 0.00 | N/A |
cloudflare-nginx | 361 | 0.01 | 358 | 0.01 | 1.51 |
Oracle-Application-Server-10g | 355 | 0.01 | 375 | 0.01 | -4.70 |
EdgePrism | 353 | 0.01 | 354 | 0.01 | 0.39 |
Rumpus | 350 | 0.01 | 357 | 0.01 | -1.30 |
eClass | 338 | 0.01 | 324 | 0.01 | 5.02 |
cc-web | 336 | 0.01 | 332 | 0.01 | 1.88 |
web | 332 | 0.01 | 325 | 0.01 | 2.84 |
LRBD-2004e49 | 324 | 0.01 | 319 | 0.01 | 2.25 |
UploadServer | 323 | 0.01 | 329 | 0.01 | -1.16 |
uvicorn | 312 | 0.01 | 322 | 0.01 | -2.46 |
ddosx | 303 | 0.01 | 301 | 0.01 | 1.34 |
envoy | 299 | 0.01 | 291 | 0.01 | 3.44 |
yunjiasu | 296 | 0.01 | 0 | 0.00 | N/A |
Netscape-Enterprise | 288 | 0.01 | 299 | 0.01 | -3.03 |
Windows-Azure-Blob | 287 | 0.01 | 277 | 0.01 | 4.31 |
4D | 286 | 0.01 | 294 | 0.01 | -2.07 |
IBM_HTTP_Server | 285 | 0.01 | 286 | 0.01 | 0.32 |
istio-envoy | 284 | 0.01 | 276 | 0.01 | 3.59 |
ghs | 283 | 0.01 | 287 | 0.01 | -0.73 |
CloudWAF | 277 | 0.01 | 273 | 0.01 | 2.15 |
CommuniGatePro | 275 | 0.01 | 280 | 0.01 | -1.13 |
WildFly | 266 | 0.01 | 282 | 0.01 | -5.04 |
MageStack-MagentoOS | 266 | 0.01 | 270 | 0.01 | -0.82 |
none | 265 | 0.01 | 261 | 0.01 | 2.21 |
ias | 264 | 0.01 | 251 | 0.01 | 5.89 |
bfe | 264 | 0.01 | 266 | 0.01 | -0.09 |
myracloud | 257 | 0.01 | 255 | 0.01 | 1.46 |
awex | 254 | 0.01 | 252 | 0.01 | 1.47 |
kittenx | 253 | 0.01 | 252 | 0.01 | 1.07 |
CentOS | 249 | 0.01 | 260 | 0.01 | -3.59 |
WowzaStreamingEngine | 244 | 0.01 | 250 | 0.01 | -1.74 |
ECS | 235 | 0.01 | 237 | 0.01 | -0.18 |
Werkzeug | 232 | 0.00 | 0 | 0.00 | N/A |
rdwr | 226 | 0.00 | 0 | 0.00 | N/A |
FlowBalancer | 226 | 0.00 | 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.