Websites Powered by Really Simple SSL & Security
1,386,066 websites tracked using Really Simple SSL & Security (Security) · really-simple-ssl.com
Really Simple SSL & Security is a security tool that protects the site from attacks. Its official site is really-simple-ssl.com. PoweredBy tracks the websites that use Really Simple SSL & Security across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the security ecosystem.
Usage trend
250K
500K
750K
1M
Apr 2024
Nov 2024
May 2025
Dec 2025
Jun 2026
Domains observed using Really Simple SSL & Security in each month's HTTP Archive crawl,
Apr 2024 to Jun 2026 · peak 897,467 in Apr 2024. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 2.4 s
INP 50 ms
CLS 0
TTFB 1300 ms
Median site among 569,753 Really Simple SSL & Security sites with Chrome UX data, p75 values, Jun 2026.
Top countries
United States
97,418
Brazil
48,788
Spain
47,706
Japan
42,353
France
40,734
Italy
36,640
United Kingdom
35,181
Germany
32,992
Sites using Really Simple SSL & Security by audience country, Chrome UX Report.
Top sites by authority
9+
7% · 27 of 372 sites
8+
6% · 437 of 7,677 sites
7+
3% · 1,413 of 45,712 sites
6+
3% · 2,929 of 110,136 sites
5+
2% · 5,958 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Really Simple SSL & Security in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Really Simple SSL & Security
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | cloudfront.net | 9.47/10 | - | - | Apr 2024 |
| 2 | github.io | 9.43/10 | 1,800 | 1 | Aug 2024 |
| 3 | weebly.com | 9.24/10 | 162,400 | 11,089 | Mar 2026 |
| 4 | harvard.edu | 9.24/10 | 472,900 | 13,570 | Apr 2024 |
| 5 | bund.de | 9.23/10 | - | - | Apr 2024 |
| 6 | ca.gov | 9.23/10 | 1,457,100 | 28,722 | Apr 2024 |
| 7 | stanford.edu | 9.19/10 | 3,302,700 | 5,160 | Apr 2024 |
| 8 | mit.edu | 9.18/10 | 161,200 | 27,360 | Apr 2024 |
| 9 | nasa.gov | 9.15/10 | 2,715,500 | 372,280 | Oct 2024 |
| 10 | pages.dev | 9.14/10 | - | - | Sep 2024 |
| 11 | berkeley.edu | 9.10/10 | 166,900 | 5,412 | Apr 2024 |
| 12 | cornell.edu | 9.10/10 | 242,100 | 23,854 | Apr 2024 |
| 13 | usatoday.com | 9.08/10 | 10,803,700 | 3,413,388 | Apr 2024 |
| 14 | mhlw.go.jp | 9.08/10 | 15,300 | 12,761 | Apr 2024 |
| 15 | unesco.org | 9.06/10 | 294,400 | 71,304 | Apr 2024 |
| 16 | vercel.app | 9.05/10 | - | - | Apr 2024 |
| 17 | wpengine.com | 9.04/10 | 66,500 | 17,967 | Apr 2024 |
| 18 | deloitte.com | 9.04/10 | 393,900 | 170,966 | Apr 2024 |
| 19 | ny.gov | 9.04/10 | 691,300 | 55,212 | Apr 2024 |
| 20 | b-cdn.net | 9.02/10 | - | - | Apr 2024 |
| 21 | ieee.org | 9.02/10 | 37,200 | 20,161 | Apr 2024 |
| 22 | columbia.edu | 9.02/10 | 770,900 | 41,349 | Apr 2024 |
| 23 | netlify.app | 9.01/10 | 2 | 2 | Apr 2024 |
| 24 | psu.edu | 9.01/10 | 581,600 | 94,595 | Apr 2024 |
| 25 | umich.edu | 9.01/10 | 36,500 | 1,974 | Apr 2024 |
| 26 | uk.com | 9.00/10 | 2 | 12 | Apr 2024 |
| 27 | upenn.edu | 9.00/10 | 179,200 | 5,457 | Apr 2024 |
| 28 | complianz.io | 8.98/10 | 510 | 864 | Apr 2024 |
| 29 | ox.ac.uk | 8.98/10 | 214,200 | 93,016 | Apr 2024 |
| 30 | princeton.edu | 8.98/10 | 246,800 | 50,700 | Apr 2024 |
| 31 | texas.gov | 8.98/10 | 856,400 | 43,777 | Apr 2024 |
| 32 | wisc.edu | 8.97/10 | 461,400 | 7,361 | Apr 2024 |
| 33 | umn.edu | 8.96/10 | 78 | 49 | Apr 2024 |
| 34 | lefigaro.fr | 8.95/10 | 18,400 | 38,648 | Apr 2024 |
| 35 | nsw.gov.au | 8.95/10 | 75,300 | 73,181 | Apr 2024 |
| 36 | ethz.ch | 8.95/10 | 12,900 | 11,869 | Apr 2024 |
| 37 | sakura.ne.jp | 8.95/10 | - | - | Apr 2024 |
| 38 | maine.gov | 8.93/10 | 1,116,200 | 428,738 | Apr 2024 |
| 39 | ucla.edu | 8.93/10 | 412,200 | 14,756 | Apr 2024 |
| 40 | jhu.edu | 8.93/10 | 177,400 | 6,915 | Apr 2024 |
| 41 | wa.gov | 8.93/10 | 719,800 | 8,195 | Apr 2024 |
| 42 | utexas.edu | 8.92/10 | 503,000 | 11,984 | Apr 2024 |
| 43 | uol.com.br | 8.92/10 | 33,600 | 42,015 | Apr 2024 |
| 44 | gov.ru | 8.91/10 | 2,700 | 216 | Apr 2024 |
| 45 | gallup.com | 8.91/10 | 126,500 | 36,270 | Jan 2025 |
| 46 | nyu.edu | 8.90/10 | 674,000 | 142,032 | Apr 2024 |
| 47 | usc.edu | 8.89/10 | 361,000 | 14,987 | Apr 2024 |
| 48 | duke.edu | 8.88/10 | 193,100 | 821 | Apr 2024 |
| 49 | azurewebsites.net | 8.87/10 | - | - | Apr 2024 |
| 50 | appspot.com | 8.87/10 | - | - | Apr 2024 |
| 51 | cam.ac.uk | 8.87/10 | 208,200 | 35,354 | Apr 2024 |
| 52 | francetvinfo.fr | 8.87/10 | 38 | 31 | Apr 2024 |
| 53 | us.com | 8.86/10 | 32 | 9 | Apr 2024 |
| 54 | coe.int | 8.86/10 | 138,700 | 44,475 | Jun 2026 |
| 55 | northwestern.edu | 8.86/10 | 193,400 | 45,922 | Apr 2024 |
| 56 | umd.edu | 8.85/10 | 253,300 | 15,690 | Apr 2024 |
| 57 | ouest-france.fr | 8.84/10 | 53,500 | 79,938 | Apr 2024 |
| 58 | ufl.edu | 8.84/10 | 241,600 | 3,624 | Apr 2024 |
| 59 | ucsd.edu | 8.84/10 | 48,100 | 2,389 | Apr 2024 |
| 60 | ubc.ca | 8.84/10 | 14,500 | 2,813 | Apr 2024 |
| 61 | illinois.edu | 8.83/10 | 47,000 | 4,065 | Apr 2024 |
| 62 | ucdavis.edu | 8.83/10 | 383,600 | 93,475 | Apr 2024 |
| 63 | unc.edu | 8.83/10 | 342,800 | 27,928 | Apr 2024 |
| 64 | tokyo.lg.jp | 8.83/10 | - | - | Apr 2024 |
| 65 | cnrs.fr | 8.82/10 | 4,300 | 2,992 | Apr 2024 |
| 66 | virginia.gov | 8.82/10 | 339,900 | 20,933 | Apr 2024 |
| 67 | it.com | 8.81/10 | - | - | Aug 2024 |
| 68 | nejm.org | 8.81/10 | 541,200 | 217,655 | Apr 2024 |
| 69 | utoronto.ca | 8.81/10 | 42,800 | 10,094 | Apr 2024 |
| 70 | shrm.org | 8.80/10 | 338,100 | 114,977 | Dec 2024 |
| 71 | in.gov | 8.80/10 | 3,076,000 | 1,001,546 | Apr 2024 |
| 72 | mn.gov | 8.78/10 | 964,200 | 281,325 | Apr 2024 |
| 73 | georgetown.edu | 8.78/10 | 138,100 | 27,817 | Apr 2024 |
| 74 | msu.edu | 8.78/10 | 149,500 | 2,641 | Apr 2024 |
| 75 | mext.go.jp | 8.78/10 | 1,300 | 1,556 | Apr 2024 |
| 76 | wpenginepowered.com | 8.77/10 | - | - | Apr 2024 |
| 77 | eu.com | 8.77/10 | - | - | Apr 2024 |
| 78 | kpmg.com | 8.77/10 | 125,800 | 81,369 | Jan 2025 |
| 79 | gouv.qc.ca | 8.77/10 | - | - | Apr 2024 |
| 80 | bu.edu | 8.77/10 | 813,200 | 295,729 | Apr 2024 |
| 81 | uci.edu | 8.76/10 | 94,700 | 9,859 | Apr 2024 |
| 82 | tamu.edu | 8.76/10 | 352,900 | 11,636 | Apr 2024 |
| 83 | ohio.gov | 8.76/10 | 367,500 | 35,968 | Apr 2024 |
| 84 | amnesty.org | 8.75/10 | 320,300 | 77,595 | Dec 2024 |
| 85 | berlin.de | 8.75/10 | 78,900 | 23,782 | Apr 2024 |
| 86 | army.mil | 8.75/10 | 1,049,000 | 286,727 | Apr 2024 |
| 87 | rutgers.edu | 8.75/10 | 147,400 | 31,478 | Apr 2024 |
| 88 | mo.gov | 8.75/10 | 136,100 | 9,975 | Apr 2024 |
| 89 | nj.gov | 8.74/10 | 2,479,000 | 955,576 | May 2024 |
| 90 | epfl.ch | 8.74/10 | 12,900 | 6,546 | Apr 2024 |
| 91 | illinois.gov | 8.73/10 | 523,000 | 73,209 | Apr 2024 |
| 92 | ncsu.edu | 8.72/10 | 155,900 | 15,968 | Apr 2024 |
| 93 | ucsb.edu | 8.71/10 | 73,800 | 11,445 | Apr 2024 |
| 94 | arizona.edu | 8.71/10 | 127,800 | 25,918 | Apr 2024 |
| 95 | u-tokyo.ac.jp | 8.71/10 | 25,200 | 7,795 | Apr 2024 |
| 96 | hku.hk | 8.70/10 | 6,000 | 1,100 | Apr 2024 |
| 97 | thomsonreuters.com | 8.70/10 | 145,100 | 57,340 | Apr 2024 |
| 98 | interieur.gouv.fr | 8.70/10 | 1,500 | 1,189 | Apr 2024 |
| 99 | ucsf.edu | 8.70/10 | 162,500 | 56,785 | Apr 2024 |
| 100 | in.net | 8.69/10 | - | - | Apr 2024 |
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) →
Compare Really Simple SSL & Security
- Really Simple SSL & Security vs HSTS
- Really Simple SSL & Security vs reCAPTCHA
- Really Simple SSL & Security vs Cloudflare Bot Management
- Really Simple SSL & Security vs DDoS-Guard
- Really Simple SSL & Security vs Cloudflare Turnstile