Websites Powered by OpenSSL
427,343 websites tracked using OpenSSL (Web server extensions) · openssl.org
OpenSSL is a web-server extension or module. Its official site is openssl.org. PoweredBy tracks the websites that use OpenSSL across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the web server extensions ecosystem.
Usage trend
50K
100K
150K
200K
Apr 2018
May 2020
May 2022
Jun 2024
Jun 2026
Domains observed using OpenSSL in each month's HTTP Archive crawl,
Apr 2018 to Jun 2026 · peak 187,590 in Nov 2022. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.7 s
INP 75 ms
CLS 0
TTFB 700 ms
Median site among 139,138 OpenSSL sites with Chrome UX data, p75 values, Jun 2026.
Top countries
United States
33,851
Japan
26,387
India
19,124
Brazil
14,179
Germany
13,830
Italy
13,124
South Korea
12,915
United Kingdom
12,773
Sites using OpenSSL by audience country, Chrome UX Report.
Top sites by authority
9+
10% · 37 of 372 sites
8+
10% · 764 of 7,677 sites
7+
5% · 2,512 of 45,712 sites
6+
4% · 4,297 of 110,136 sites
5+
3% · 6,759 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running OpenSSL in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using OpenSSL
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 301 | clemson.edu | 8.50/10 | 373,300 | 114,661 | Aug 2018 |
| 302 | case.edu | 8.50/10 | 694,400 | 120,999 | Aug 2018 |
| 303 | umontreal.ca | 8.50/10 | 3,700 | 761 | Aug 2018 |
| 304 | miami.edu | 8.50/10 | 5 | 13 | Aug 2018 |
| 305 | ku.dk | 8.50/10 | 5,000 | 2,453 | Aug 2018 |
| 306 | bunka.go.jp | 8.50/10 | 430 | 391 | Aug 2018 |
| 307 | chalmers.se | 8.50/10 | 6,100 | 2,725 | Aug 2018 |
| 308 | sjsu.edu | 8.49/10 | 502,600 | 132,550 | Aug 2018 |
| 309 | uni-goettingen.de | 8.49/10 | 6,400 | 3,874 | Aug 2018 |
| 310 | temple.edu | 8.49/10 | 130,400 | 30,152 | Aug 2018 |
| 311 | salute.gov.it | 8.49/10 | 830 | 386 | Mar 2021 |
| 312 | uni-tuebingen.de | 8.49/10 | 2,900 | 2,712 | Aug 2018 |
| 313 | tu-dresden.de | 8.49/10 | 2,300 | 3,199 | Dec 2020 |
| 314 | uni-koeln.de | 8.49/10 | 1,200 | 427 | Aug 2018 |
| 315 | uc.edu | 8.49/10 | 425,800 | 91,985 | Aug 2018 |
| 316 | unm.edu | 8.49/10 | 35,500 | 18,884 | Aug 2018 |
| 317 | ilsole24ore.com | 8.48/10 | 3,500 | 7,210 | Aug 2018 |
| 318 | ebsco.com | 8.48/10 | 9,567,300 | 933,945 | Oct 2024 |
| 319 | unirioja.es | 8.48/10 | 620 | 1,912 | Aug 2018 |
| 320 | greenend.org.uk | 8.47/10 | 54 | 76 | Apr 2018 |
| 321 | state.nj.us | 8.47/10 | 200 | 56 | Aug 2018 |
| 322 | gva.es | 8.47/10 | 490 | 1,924 | Aug 2018 |
| 323 | rp-online.de | 8.47/10 | 6,600 | 10,906 | Nov 2022 |
| 324 | poznan.pl | 8.47/10 | 320 | 564 | Apr 2018 |
| 325 | de.com | 8.46/10 | - | 2 | May 2019 |
| 326 | gov.si | 8.46/10 | 6,300 | 3,751 | Aug 2018 |
| 327 | state.fl.us | 8.46/10 | - | - | Aug 2018 |
| 328 | fazenda.gov.br | 8.46/10 | - | - | Jan 2025 |
| 329 | rainn.org | 8.46/10 | 73,900 | 8,820 | Oct 2021 |
| 330 | uni-bonn.de | 8.46/10 | 4,100 | 2,235 | Aug 2018 |
| 331 | queensu.ca | 8.46/10 | 44,000 | 26,583 | Aug 2018 |
| 332 | usu.edu | 8.46/10 | 224,200 | 87,704 | Aug 2018 |
| 333 | ladepeche.fr | 8.46/10 | 11,300 | 26,359 | Jan 2019 |
| 334 | k-state.edu | 8.45/10 | 242,700 | 74,729 | Aug 2018 |
| 335 | adelaide.edu.au | 8.45/10 | 47,400 | 19,273 | Aug 2018 |
| 336 | gov.hu | 8.44/10 | - | - | Aug 2018 |
| 337 | kobe-u.ac.jp | 8.44/10 | 2,400 | 1,229 | Aug 2018 |
| 338 | rit.edu | 8.44/10 | 158,100 | 87,161 | Aug 2018 |
| 339 | austlii.edu.au | 8.44/10 | 7,600 | 8,156 | Nov 2023 |
| 340 | aok.de | 8.44/10 | 25,300 | 3,309 | Aug 2018 |
| 341 | ulaval.ca | 8.44/10 | 2,800 | 1,607 | Aug 2018 |
| 342 | dni.gov | 8.44/10 | 278,200 | 30,124 | Jun 2018 |
| 343 | uwo.ca | 8.44/10 | 24,700 | 12,317 | Jan 2019 |
| 344 | uh.edu | 8.44/10 | 390,700 | 110,894 | Aug 2018 |
| 345 | iarc.fr | 8.44/10 | - | - | Oct 2022 |
| 346 | justice.cz | 8.43/10 | - | - | Oct 2023 |
| 347 | uni-muenster.de | 8.43/10 | 9,000 | 4,657 | Aug 2018 |
| 348 | us.es | 8.43/10 | 1,400 | 3,306 | Aug 2018 |
| 349 | mcmaster.ca | 8.43/10 | 4,600 | 1,351 | Jun 2018 |
| 350 | pref.kanagawa.jp | 8.43/10 | 130 | 139 | May 2025 |
| 351 | ugent.be | 8.42/10 | 3,800 | 3,554 | Aug 2018 |
| 352 | iii.org | 8.42/10 | 123,700 | 24,480 | Jun 2020 |
| 353 | wyo.gov | 8.42/10 | 68,000 | 1,457 | Sep 2023 |
| 354 | lsu.edu | 8.42/10 | 344,800 | 88,108 | Apr 2018 |
| 355 | governo.it | 8.42/10 | 49,700 | 4,540 | Apr 2025 |
| 356 | utk.edu | 8.42/10 | 132,100 | 8,479 | May 2018 |
| 357 | unh.edu | 8.42/10 | 159,700 | 47,900 | Aug 2018 |
| 358 | csun.edu | 8.41/10 | 289,400 | 100,100 | Aug 2018 |
| 359 | nottingham.ac.uk | 8.41/10 | 117,200 | 39,587 | Aug 2018 |
| 360 | scholastic.com | 8.41/10 | 235,200 | 72,935 | Aug 2018 |
| 361 | leeds.ac.uk | 8.41/10 | 8,300 | 5,209 | Aug 2018 |
| 362 | unipd.it | 8.41/10 | 3,000 | 3,552 | Aug 2018 |
| 363 | beniculturali.it | 8.41/10 | - | - | Aug 2018 |
| 364 | yokohama.lg.jp | 8.41/10 | - | - | Apr 2020 |
| 365 | esri.com | 8.40/10 | 257,500 | 73,769 | Apr 2021 |
| 366 | adb.org | 8.40/10 | 27,000 | 13,792 | Jun 2022 |
| 367 | inserm.fr | 8.40/10 | 3,100 | 2,265 | May 2020 |
| 368 | rbi.org.in | 8.39/10 | 22,500 | 19,015 | Sep 2025 |
| 369 | education.fr | 8.39/10 | - | - | Apr 2020 |
| 370 | uni-frankfurt.de | 8.39/10 | 650 | 1,027 | Aug 2018 |
| 371 | escholarship.org | 8.39/10 | 41,400 | 66,232 | May 2023 |
| 372 | sas.com | 8.38/10 | 89,000 | 16,401 | Nov 2020 |
| 373 | upv.es | 8.38/10 | 2,500 | 2,576 | Aug 2018 |
| 374 | tohoku.ac.jp | 8.38/10 | 2,300 | 1,759 | Aug 2018 |
| 375 | ugr.es | 8.38/10 | 8,500 | 8,711 | Aug 2018 |
| 376 | greatplacetowork.com | 8.37/10 | 146,900 | 36,087 | Jun 2021 |
| 377 | pp.ua | 8.37/10 | 22 | 5 | Apr 2018 |
| 378 | index.hu | 8.37/10 | 9,800 | 5,526 | Jan 2019 |
| 379 | state.co.us | 8.37/10 | - | - | Aug 2018 |
| 380 | uni-lj.si | 8.37/10 | 3,200 | 359 | Aug 2018 |
| 381 | kaiserpermanente.org | 8.37/10 | 41,900 | 494 | Aug 2018 |
| 382 | fgv.br | 8.37/10 | 2 | 10 | Nov 2018 |
| 383 | lodz.pl | 8.37/10 | 90 | 193 | Apr 2018 |
| 384 | santepubliquefrance.fr | 8.37/10 | 3,400 | 1,260 | Feb 2025 |
| 385 | jrc.or.jp | 8.37/10 | 420 | 340 | Aug 2018 |
| 386 | umu.se | 8.37/10 | 3,300 | 3,203 | Aug 2018 |
| 387 | dyndns.org | 8.36/10 | - | - | Aug 2018 |
| 388 | st-andrews.ac.uk | 8.36/10 | 48,900 | 16,687 | Aug 2018 |
| 389 | stjude.org | 8.36/10 | 198,900 | 67,593 | Aug 2019 |
| 390 | interno.gov.it | 8.36/10 | 1,100 | 1,313 | Aug 2018 |
| 391 | ks.gov | 8.36/10 | - | - | Aug 2018 |
| 392 | unt.edu | 8.36/10 | 188,400 | 26,607 | Aug 2018 |
| 393 | ne.gov | 8.36/10 | 71 | 79 | Mar 2021 |
| 394 | uow.edu.au | 8.36/10 | 22,800 | 15,138 | Aug 2018 |
| 395 | uqam.ca | 8.36/10 | 1,100 | 355 | Aug 2018 |
| 396 | fukuoka.lg.jp | 8.36/10 | - | - | Aug 2018 |
| 397 | wroc.pl | 8.36/10 | - | - | Jan 2019 |
| 398 | ufmg.br | 8.36/10 | 3,300 | 1,765 | Aug 2018 |
| 399 | pref.aichi.jp | 8.36/10 | 440 | 254 | Jan 2019 |
| 400 | rmit.edu.au | 8.36/10 | 10,700 | 16,187 | Aug 2023 |
Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.
Download top 10,000 as CSV (zip) →