Websites Powered by Caddy
174,276 websites tracked using Caddy (Web servers) · caddyserver.com
Caddy is a web server that delivers the site's pages. Its official site is caddyserver.com. PoweredBy tracks the websites that use Caddy across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the web servers ecosystem.
Usage trend
20K
40K
60K
Jun 2018
Jun 2020
Jun 2022
Jun 2024
Jun 2026
Domains observed using Caddy in each month's HTTP Archive crawl,
Jun 2018 to Jun 2026 · peak 50,969 in Feb 2025. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.8 s
INP 75 ms
CLS 0
TTFB 700 ms
Median site among 31,035 Caddy sites with Chrome UX data, p75 values, Jun 2026.
Top countries
United States
10,865
India
5,533
Germany
4,904
United Kingdom
4,511
France
4,369
Romania
3,792
Brazil
3,684
Canada
3,629
Sites using Caddy by audience country, Chrome UX Report.
Top sites by authority
9+
2% · 9 of 372 sites
8+
2% · 156 of 7,677 sites
7+
<1% · 431 of 45,712 sites
6+
<1% · 739 of 110,136 sites
5+
<1% · 1,138 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Caddy in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Caddy
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | cloudfront.net | 9.47/10 | - | - | Jun 2026 |
| 2 | archive.org | 9.34/10 | 3,957,300 | 1,511,177 | Jan 2023 |
| 3 | mit.edu | 9.18/10 | 161,200 | 27,360 | Oct 2023 |
| 4 | usda.gov | 9.14/10 | 476,600 | 147,178 | May 2025 |
| 5 | unesco.org | 9.06/10 | 294,400 | 71,304 | Jan 2023 |
| 6 | iso.org | 9.04/10 | 663,700 | 64,103 | Mar 2025 |
| 7 | umich.edu | 9.01/10 | 36,500 | 1,974 | Nov 2021 |
| 8 | uk.com | 9.00/10 | 2 | 12 | Nov 2021 |
| 9 | energy.gov | 9.00/10 | 1,887,700 | 301,694 | Oct 2023 |
| 10 | princeton.edu | 8.98/10 | 246,800 | 50,700 | Jul 2025 |
| 11 | cmu.edu | 8.97/10 | 436,800 | 81,774 | May 2025 |
| 12 | wisc.edu | 8.97/10 | 461,400 | 7,361 | Dec 2025 |
| 13 | ethz.ch | 8.95/10 | 12,900 | 11,869 | Jun 2021 |
| 14 | nypost.com | 8.91/10 | 5,095,400 | 2,159,056 | Aug 2022 |
| 15 | us.com | 8.86/10 | 32 | 9 | Jun 2024 |
| 16 | nami.org | 8.86/10 | 626,800 | 117,511 | Mar 2025 |
| 17 | iea.org | 8.85/10 | 168,000 | 79,019 | Aug 2022 |
| 18 | uzh.ch | 8.79/10 | 7,800 | 3,263 | Apr 2023 |
| 19 | feedly.com | 8.74/10 | 16,000 | 7,477 | Oct 2024 |
| 20 | brown.edu | 8.73/10 | 377,100 | 26,065 | Dec 2020 |
| 21 | mailerlite.com | 8.71/10 | 32,900 | 15,222 | Oct 2022 |
| 22 | uwaterloo.ca | 8.71/10 | 224,700 | 71,840 | Dec 2022 |
| 23 | arizona.edu | 8.71/10 | 127,800 | 25,918 | Mar 2025 |
| 24 | u-tokyo.ac.jp | 8.71/10 | 25,200 | 7,795 | Aug 2018 |
| 25 | srf.ch | 8.71/10 | 13,400 | 21,065 | Dec 2020 |
| 26 | hku.hk | 8.70/10 | 6,000 | 1,100 | Apr 2025 |
| 27 | ucsf.edu | 8.70/10 | 162,500 | 56,785 | Jul 2021 |
| 28 | in.net | 8.69/10 | - | - | Sep 2024 |
| 29 | gov.bc.ca | 8.69/10 | 2,200 | 880 | Oct 2020 |
| 30 | usp.br | 8.65/10 | 1 | 19 | Jun 2021 |
| 31 | uq.edu.au | 8.65/10 | 9,700 | 1,554 | May 2021 |
| 32 | heroku.com | 8.64/10 | 9,700 | 8,956 | May 2026 |
| 33 | indiegogo.com | 8.64/10 | 56,400 | 25,185 | Nov 2025 |
| 34 | umass.edu | 8.64/10 | 348,000 | 111,861 | Mar 2026 |
| 35 | tudelft.nl | 8.63/10 | 23,300 | 7,683 | Jul 2024 |
| 36 | cookieyes.com | 8.62/10 | 12,300 | 5,263 | Apr 2026 |
| 37 | osf.io | 8.61/10 | 4,100 | 8,097 | Mar 2025 |
| 38 | iu.edu | 8.61/10 | 78,800 | 4,964 | Feb 2026 |
| 39 | timeout.com | 8.60/10 | 2,275,200 | 1,099,564 | Sep 2025 |
| 40 | kit.edu | 8.60/10 | 3,500 | 1,669 | Aug 2025 |
| 41 | krakow.pl | 8.59/10 | 690 | 649 | Jan 2019 |
| 42 | helpscout.com | 8.58/10 | 30,500 | 9,972 | Mar 2025 |
| 43 | univie.ac.at | 8.58/10 | 10,000 | 1,103 | Sep 2024 |
| 44 | uni-heidelberg.de | 8.58/10 | 8,000 | 4,696 | Aug 2022 |
| 45 | unam.mx | 8.58/10 | 1,900 | 1,196 | Oct 2024 |
| 46 | codeberg.org | 8.57/10 | 3,000 | 3,303 | Jul 2023 |
| 47 | ru.nl | 8.57/10 | 3,700 | 3,479 | Jan 2024 |
| 48 | emory.edu | 8.56/10 | 201,700 | 16,626 | Nov 2022 |
| 49 | cuni.cz | 8.56/10 | 4,400 | 1,637 | Aug 2022 |
| 50 | belgium.be | 8.55/10 | 20,400 | 1,736 | Sep 2025 |
| 51 | rwth-aachen.de | 8.55/10 | 640 | 1,476 | Aug 2022 |
| 52 | dictionary.com | 8.54/10 | 43,087,800 | 1,706,902 | Mar 2025 |
| 53 | pubmatic.com | 8.53/10 | 2,700 | 1,568 | Sep 2023 |
| 54 | za.com | 8.53/10 | - | - | Mar 2023 |
| 55 | spb.ru | 8.53/10 | - | - | Aug 2022 |
| 56 | cancerresearchuk.org | 8.53/10 | 592,000 | 136,583 | Oct 2024 |
| 57 | cairn.info | 8.52/10 | 27 | 149 | Mar 2025 |
| 58 | manchester.ac.uk | 8.52/10 | 64,000 | 18,257 | Aug 2022 |
| 59 | agriculture.gouv.fr | 8.52/10 | 3,400 | 2,646 | Mar 2022 |
| 60 | uni-bremen.de | 8.51/10 | 2,000 | 1,789 | Jan 2023 |
| 61 | eu.org | 8.51/10 | - | - | Aug 2022 |
| 62 | atlasobscura.com | 8.51/10 | 1,473,100 | 391,313 | Jun 2022 |
| 63 | copernicus.eu | 8.51/10 | 17,100 | 6,413 | Mar 2024 |
| 64 | louvre.fr | 8.51/10 | 468,000 | 35,735 | Nov 2024 |
| 65 | uxdesign.cc | 8.50/10 | 24,300 | 29,656 | Jun 2022 |
| 66 | shopify.dev | 8.49/10 | 48,900 | 21,599 | Apr 2026 |
| 67 | fastly.net | 8.49/10 | - | - | Aug 2018 |
| 68 | uni-goettingen.de | 8.49/10 | 6,400 | 3,874 | Nov 2025 |
| 69 | unibas.ch | 8.49/10 | 1,800 | 1,310 | Aug 2022 |
| 70 | sprinklr.com | 8.47/10 | 55,400 | 23,506 | Jun 2023 |
| 71 | kvk.nl | 8.47/10 | 4,500 | 2,490 | Jul 2025 |
| 72 | unil.ch | 8.47/10 | 2,600 | 1,615 | May 2026 |
| 73 | captivate.fm | 8.46/10 | 3,100 | 1,871 | Nov 2022 |
| 74 | uni-bonn.de | 8.46/10 | 4,100 | 2,235 | Nov 2022 |
| 75 | perl.org | 8.44/10 | 2,800 | 1,023 | Nov 2022 |
| 76 | payhip.com | 8.43/10 | 19,700 | 20,453 | Aug 2022 |
| 77 | us.es | 8.43/10 | 1,400 | 3,306 | Apr 2026 |
| 78 | sched.com | 8.41/10 | 9,000 | 2,778 | Aug 2025 |
| 79 | openlibrary.org | 8.41/10 | 182,500 | 121,958 | May 2023 |
| 80 | systeme.io | 8.40/10 | 5,900 | 3,761 | Mar 2025 |
| 81 | interaction-design.org | 8.37/10 | 194,700 | 34,407 | Feb 2024 |
| 82 | lodz.pl | 8.37/10 | 90 | 193 | Feb 2025 |
| 83 | devpost.com | 8.36/10 | 10,700 | 6,824 | Mar 2025 |
| 84 | unt.edu | 8.36/10 | 188,400 | 26,607 | Jul 2024 |
| 85 | ufmg.br | 8.36/10 | 3,300 | 1,765 | Jul 2023 |
| 86 | uni-hannover.de | 8.35/10 | 1,300 | 518 | Nov 2024 |
| 87 | uchile.cl | 8.35/10 | 1,900 | 3,976 | Jan 2022 |
| 88 | dtu.dk | 8.35/10 | 2,600 | 3,489 | May 2024 |
| 89 | uv.es | 8.35/10 | 19,100 | 19,126 | May 2026 |
| 90 | tcd.ie | 8.34/10 | 25,400 | 17,278 | Nov 2025 |
| 91 | cvut.cz | 8.34/10 | 1,200 | 214 | Sep 2023 |
| 92 | unipi.it | 8.32/10 | 1,500 | 1,950 | Oct 2024 |
| 93 | socialpilot.co | 8.30/10 | 54,400 | 32,176 | Mar 2025 |
| 94 | complex.com | 8.28/10 | 808,300 | 434,139 | Jun 2022 |
| 95 | unu.edu | 8.28/10 | 16,800 | 5,872 | Aug 2024 |
| 96 | vhx.tv | 8.27/10 | 380 | 37 | Mar 2025 |
| 97 | idealist.org | 8.27/10 | 477,400 | 182,501 | May 2026 |
| 98 | com.ru | 8.27/10 | - | - | Feb 2020 |
| 99 | iit.edu | 8.27/10 | 80,800 | 30,957 | Mar 2025 |
| 100 | pdx.edu | 8.27/10 | 152,000 | 32,376 | Oct 2025 |
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) →