Websites Powered by OpenSSL
426,704 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
Jun 2022
Jul 2024
Aug 2026
Domains observed using OpenSSL in each month's HTTP Archive crawl,
Apr 2018 to Aug 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 135,099 OpenSSL sites with Chrome UX data, p75 values, Aug 2026.
Top countries
United States
29,654
Japan
22,526
India
16,898
Brazil
12,786
Germany
11,844
South Korea
11,243
United Kingdom
11,237
Italy
11,018
Sites using OpenSSL by audience country, Chrome UX Report.
Top sites by authority
9+
10% · 37 of 372 sites
8+
10% · 748 of 7,677 sites
7+
5% · 2,406 of 45,712 sites
6+
4% · 4,113 of 110,136 sites
5+
3% · 6,465 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 |
|---|---|---|---|---|---|
| 1 | europa.eu | 9.57/10 | 42,200 | 31,835 | Aug 2018 |
| 2 | amazonaws.com | 9.50/10 | - | - | Aug 2018 |
| 3 | cloudfront.net | 9.47/10 | - | - | Feb 2020 |
| 4 | nih.gov | 9.44/10 | 301,200 | 37,339 | Aug 2018 |
| 5 | who.int | 9.26/10 | 3,114,700 | 778,407 | Jan 2019 |
| 6 | harvard.edu | 9.24/10 | 472,900 | 13,570 | Aug 2018 |
| 7 | ca.gov | 9.23/10 | 1,457,100 | 28,722 | Aug 2018 |
| 8 | un.org | 9.21/10 | 2,209,200 | 439,253 | Aug 2018 |
| 9 | stanford.edu | 9.19/10 | 3,302,700 | 5,160 | Aug 2018 |
| 10 | bbc.co.uk | 9.18/10 | 6,004,800 | 2,144,161 | Aug 2018 |
| 11 | mit.edu | 9.18/10 | 161,200 | 27,360 | Apr 2018 |
| 12 | admin.ch | 9.18/10 | 4,200 | 753 | Aug 2018 |
| 13 | cnn.com | 9.16/10 | 15,960,900 | 3,032,217 | Jan 2019 |
| 14 | nasa.gov | 9.15/10 | 2,715,500 | 372,280 | Aug 2018 |
| 15 | wiley.com | 9.14/10 | 76,900 | 33,308 | Sep 2018 |
| 16 | usda.gov | 9.14/10 | 476,600 | 147,178 | Aug 2018 |
| 17 | irs.gov | 9.13/10 | 19,016,800 | 2,129,096 | Jul 2023 |
| 18 | epa.gov | 9.13/10 | 3,848,900 | 707,207 | Aug 2018 |
| 19 | berkeley.edu | 9.10/10 | 166,900 | 5,412 | Aug 2018 |
| 20 | cornell.edu | 9.10/10 | 242,100 | 23,854 | Aug 2018 |
| 21 | hhs.gov | 9.10/10 | 1,465,200 | 282,522 | Aug 2018 |
| 22 | canada.ca | 9.08/10 | 2,129,800 | 995,010 | Apr 2019 |
| 23 | mhlw.go.jp | 9.08/10 | 15,300 | 12,761 | Nov 2019 |
| 24 | state.gov | 9.07/10 | 3,314,200 | 200,218 | Aug 2018 |
| 25 | noaa.gov | 9.07/10 | 1,258,800 | 144,262 | Aug 2018 |
| 26 | gnu.org | 9.06/10 | 174,300 | 27,908 | Mar 2020 |
| 27 | free.fr | 9.05/10 | 3,400 | 1,262 | Jan 2019 |
| 28 | ed.gov | 9.05/10 | 1,229,500 | 99,935 | Aug 2018 |
| 29 | ny.gov | 9.04/10 | 691,300 | 55,212 | Aug 2018 |
| 30 | columbia.edu | 9.02/10 | 770,900 | 41,349 | Aug 2018 |
| 31 | arcgis.com | 9.01/10 | 958,800 | 298,101 | Feb 2020 |
| 32 | psu.edu | 9.01/10 | 581,600 | 94,595 | Aug 2018 |
| 33 | umich.edu | 9.01/10 | 36,500 | 1,974 | Aug 2018 |
| 34 | yale.edu | 9.01/10 | 177,900 | 6,885 | Aug 2018 |
| 35 | uk.com | 9.00/10 | 2 | 12 | Apr 2018 |
| 36 | upenn.edu | 9.00/10 | 179,200 | 5,457 | Aug 2018 |
| 37 | energy.gov | 9.00/10 | 1,887,700 | 301,694 | Aug 2018 |
| 38 | fortune.com | 8.99/10 | 1,538,600 | 582,756 | Jul 2020 |
| 39 | ox.ac.uk | 8.98/10 | 214,200 | 93,016 | Aug 2018 |
| 40 | princeton.edu | 8.98/10 | 246,800 | 50,700 | Aug 2018 |
| 41 | texas.gov | 8.98/10 | 856,400 | 43,777 | Aug 2018 |
| 42 | nhk.or.jp | 8.98/10 | 2,800 | 716 | Aug 2022 |
| 43 | cmu.edu | 8.97/10 | 436,800 | 81,774 | Aug 2018 |
| 44 | wisc.edu | 8.97/10 | 461,400 | 7,361 | Aug 2018 |
| 45 | washington.edu | 8.96/10 | 668,000 | 107,419 | May 2018 |
| 46 | umn.edu | 8.96/10 | 78 | 49 | Apr 2018 |
| 47 | nsw.gov.au | 8.95/10 | 75,300 | 73,181 | Jan 2019 |
| 48 | mynavi.jp | 8.95/10 | 81 | 14 | Apr 2019 |
| 49 | ethz.ch | 8.95/10 | 12,900 | 11,869 | Aug 2018 |
| 50 | sakura.ne.jp | 8.95/10 | - | - | Aug 2018 |
| 51 | maine.gov | 8.93/10 | 1,116,200 | 428,738 | Mar 2024 |
| 52 | pwc.com | 8.93/10 | 291,600 | 164,788 | Aug 2018 |
| 53 | fao.org | 8.93/10 | 213,900 | 125,762 | May 2019 |
| 54 | ucla.edu | 8.93/10 | 412,200 | 14,756 | Aug 2018 |
| 55 | jhu.edu | 8.93/10 | 177,400 | 6,915 | Aug 2018 |
| 56 | cisco.com | 8.92/10 | 1,161,900 | 251,239 | Aug 2018 |
| 57 | utexas.edu | 8.92/10 | 503,000 | 11,984 | Aug 2018 |
| 58 | uol.com.br | 8.92/10 | 33,600 | 42,015 | Apr 2018 |
| 59 | uchicago.edu | 8.92/10 | 63,700 | 10,331 | Aug 2018 |
| 60 | mlit.go.jp | 8.92/10 | 11,100 | 6,476 | Aug 2018 |
| 61 | gov.ru | 8.91/10 | 2,700 | 216 | Aug 2018 |
| 62 | aepd.es | 8.91/10 | 810 | 2,021 | Mar 2021 |
| 63 | nyu.edu | 8.90/10 | 674,000 | 142,032 | Aug 2018 |
| 64 | hbs.edu | 8.89/10 | 272,000 | 59,628 | Aug 2022 |
| 65 | usc.edu | 8.89/10 | 361,000 | 14,987 | Aug 2018 |
| 66 | duke.edu | 8.88/10 | 193,100 | 821 | Jun 2018 |
| 67 | cam.ac.uk | 8.87/10 | 208,200 | 35,354 | Aug 2018 |
| 68 | us.com | 8.86/10 | 32 | 9 | Jan 2019 |
| 69 | purdue.edu | 8.86/10 | 744,800 | 169,159 | Aug 2018 |
| 70 | northwestern.edu | 8.86/10 | 193,400 | 45,922 | Aug 2018 |
| 71 | heart.org | 8.85/10 | 3,203,900 | 465,174 | Aug 2018 |
| 72 | umd.edu | 8.85/10 | 253,300 | 15,690 | Aug 2018 |
| 73 | ufl.edu | 8.84/10 | 241,600 | 3,624 | Aug 2018 |
| 74 | ucsd.edu | 8.84/10 | 48,100 | 2,389 | Aug 2018 |
| 75 | ubc.ca | 8.84/10 | 14,500 | 2,813 | Aug 2018 |
| 76 | nrw.de | 8.83/10 | - | - | Aug 2018 |
| 77 | illinois.edu | 8.83/10 | 47,000 | 4,065 | Apr 2018 |
| 78 | ct.gov | 8.83/10 | 4,800 | 35 | Aug 2018 |
| 79 | ucdavis.edu | 8.83/10 | 383,600 | 93,475 | Aug 2018 |
| 80 | unc.edu | 8.83/10 | 342,800 | 27,928 | Aug 2018 |
| 81 | weather.gov | 8.83/10 | 11,573,700 | 1,001,922 | Apr 2024 |
| 82 | tokyo.lg.jp | 8.83/10 | - | - | Jan 2019 |
| 83 | asu.edu | 8.82/10 | 144,700 | 4,208 | Aug 2018 |
| 84 | maryland.gov | 8.82/10 | 173,300 | 7,828 | Aug 2018 |
| 85 | cnrs.fr | 8.82/10 | 4,300 | 2,992 | Aug 2018 |
| 86 | virginia.gov | 8.82/10 | 339,900 | 20,933 | Jun 2018 |
| 87 | mass.gov | 8.82/10 | 3,564,100 | 1,351,010 | Jun 2022 |
| 88 | mpg.de | 8.81/10 | 59,700 | 20,903 | Aug 2018 |
| 89 | undp.org | 8.81/10 | 220,100 | 57,922 | Aug 2018 |
| 90 | colorado.gov | 8.81/10 | 81,400 | 12,781 | Aug 2018 |
| 91 | utoronto.ca | 8.81/10 | 42,800 | 10,094 | Aug 2018 |
| 92 | soumu.go.jp | 8.81/10 | 1,000 | 724 | Apr 2021 |
| 93 | sfu.ca | 8.80/10 | 210,600 | 61,463 | Aug 2018 |
| 94 | utah.gov | 8.80/10 | 129,900 | 27,432 | Aug 2018 |
| 95 | fraunhofer.de | 8.79/10 | 2,900 | 3,059 | Aug 2018 |
| 96 | uzh.ch | 8.79/10 | 7,800 | 3,263 | Aug 2018 |
| 97 | mn.gov | 8.78/10 | 964,200 | 281,325 | Apr 2018 |
| 98 | georgetown.edu | 8.78/10 | 138,100 | 27,817 | Aug 2018 |
| 99 | pa.gov | 8.78/10 | 3,838,500 | 1,368,223 | May 2019 |
| 100 | msu.edu | 8.78/10 | 149,500 | 2,641 | Aug 2018 |
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) →