Websites Powered by Caddy
177,452 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
Jul 2020
Aug 2022
Sep 2024
Oct 2026
Domains observed using Caddy in each month's HTTP Archive crawl,
Jun 2018 to Oct 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 30,509 Caddy sites with Chrome UX data, p75 values, Sep 2026.
Top countries
United States
8,992
India
5,042
Germany
4,197
United Kingdom
4,098
France
3,710
Romania
3,470
Brazil
3,343
Canada
3,166
Sites using Caddy by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Retail | 0.68% | 2,494 |
| Beauty and wellness | 0.61% | 190 |
| Games | 0.58% | 42 |
| Software and apps | 0.42% | 673 |
| Restaurants and food | 0.37% | 580 |
| Education | 0.34% | 214 |
| Non-profit and religious | 0.18% | 19 |
| Real estate | 0.17% | 139 |
| Arts and entertainment | 0.16% | 85 |
| Sports and fitness | 0.16% | 34 |
| Government | 0.15% | 14 |
| Blogs and publishing | 0.15% | 42 |
Share of each industry's websites with a detected stack that use Caddy; industries come from what sites declare in their own structured data.
Top sites by authority
9+
2% · 9 of 372 sites
8+
2% · 155 of 7,677 sites
7+
<1% · 415 of 45,712 sites
6+
<1% · 699 of 110,136 sites
5+
<1% · 1,059 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 | 3,869,700 | 1,088,944 | Jan 2023 |
| 3 | mit.edu | 9.18/10 | 163,800 | 31,239 | Oct 2023 |
| 4 | usda.gov | 9.14/10 | 474,600 | 136,928 | May 2025 |
| 5 | unesco.org | 9.06/10 | 294,400 | 71,304 | Jan 2023 |
| 6 | iso.org | 9.04/10 | 659,000 | 49,602 | Mar 2025 |
| 7 | columbia.edu | 9.02/10 | 768,900 | 38,656 | Dec 2023 |
| 8 | uk.com | 9.00/10 | 2 | 12 | Nov 2021 |
| 9 | energy.gov | 9.00/10 | 1,879,700 | 254,450 | Oct 2023 |
| 10 | princeton.edu | 8.98/10 | 244,600 | 46,551 | Jul 2025 |
| 11 | cmu.edu | 8.97/10 | 436,800 | 81,774 | May 2025 |
| 12 | wisc.edu | 8.97/10 | 461,200 | 6,382 | Dec 2025 |
| 13 | ethz.ch | 8.95/10 | 12,900 | 11,869 | Jun 2021 |
| 14 | nypost.com | 8.91/10 | 5,009,700 | 1,907,312 | Aug 2022 |
| 15 | nyu.edu | 8.90/10 | 674,000 | 142,032 | Sep 2025 |
| 16 | us.com | 8.86/10 | 32 | 8 | Jun 2024 |
| 17 | nami.org | 8.86/10 | 621,700 | 102,202 | Mar 2025 |
| 18 | iea.org | 8.85/10 | 168,000 | 79,019 | Aug 2022 |
| 19 | umd.edu | 8.85/10 | 253,200 | 15,103 | Oct 2026 |
| 20 | it.com | 8.81/10 | - | - | Apr 2025 |
| 21 | utoronto.ca | 8.81/10 | 42,800 | 10,094 | Sep 2022 |
| 22 | uzh.ch | 8.79/10 | 7,800 | 3,263 | Apr 2023 |
| 23 | feedly.com | 8.74/10 | 16,000 | 7,477 | Oct 2024 |
| 24 | mailerlite.com | 8.71/10 | 32,700 | 13,693 | Oct 2022 |
| 25 | uwaterloo.ca | 8.71/10 | 224,700 | 71,840 | Dec 2022 |
| 26 | arizona.edu | 8.71/10 | 127,500 | 23,873 | Mar 2025 |
| 27 | u-tokyo.ac.jp | 8.71/10 | 25,200 | 7,795 | Aug 2018 |
| 28 | srf.ch | 8.71/10 | 13,400 | 21,065 | Dec 2020 |
| 29 | hku.hk | 8.70/10 | 6,000 | 1,100 | Apr 2025 |
| 30 | ucsf.edu | 8.70/10 | 161,700 | 52,728 | Jul 2021 |
| 31 | gov.bc.ca | 8.69/10 | 2,200 | 880 | Oct 2020 |
| 32 | joinmastodon.org | 8.68/10 | 6,500 | 1,959 | Oct 2026 |
| 33 | indiana.edu | 8.67/10 | - | - | Feb 2026 |
| 34 | azure.com | 8.66/10 | - | - | Feb 2023 |
| 35 | usp.br | 8.65/10 | 1 | 19 | Jun 2021 |
| 36 | uq.edu.au | 8.65/10 | 9,700 | 1,554 | May 2021 |
| 37 | indiegogo.com | 8.64/10 | 56,400 | 25,185 | Nov 2025 |
| 38 | umass.edu | 8.64/10 | 346,800 | 74,804 | Mar 2026 |
| 39 | tudelft.nl | 8.63/10 | 23,300 | 7,683 | Jul 2024 |
| 40 | nus.edu.sg | 8.62/10 | 20,200 | 3,936 | Jun 2024 |
| 41 | hawaii.edu | 8.62/10 | 117,100 | 43,233 | Feb 2026 |
| 42 | osf.io | 8.61/10 | 4,000 | 7,453 | Mar 2025 |
| 43 | iu.edu | 8.61/10 | 79,300 | 4,571 | Feb 2026 |
| 44 | tum.de | 8.61/10 | 7,800 | 7,642 | Aug 2026 |
| 45 | timeout.com | 8.60/10 | 2,275,200 | 1,099,564 | Sep 2025 |
| 46 | dartmouth.edu | 8.60/10 | 37,800 | 10,895 | May 2025 |
| 47 | krakow.pl | 8.59/10 | 690 | 649 | Jan 2019 |
| 48 | helpscout.com | 8.58/10 | 30,500 | 9,972 | Mar 2025 |
| 49 | univie.ac.at | 8.58/10 | 10,000 | 1,103 | Sep 2024 |
| 50 | unam.mx | 8.58/10 | 1,900 | 1,196 | Oct 2024 |
| 51 | byu.edu | 8.57/10 | 71,300 | 6,541 | Jul 2023 |
| 52 | cnr.it | 8.57/10 | 810 | 1,174 | Nov 2022 |
| 53 | liu.se | 8.56/10 | 6,700 | 3,335 | Sep 2026 |
| 54 | rwth-aachen.de | 8.55/10 | 640 | 1,476 | Aug 2022 |
| 55 | dictionary.com | 8.54/10 | 42,459,700 | 1,452,995 | Mar 2025 |
| 56 | pubmatic.com | 8.53/10 | 2,700 | 1,568 | Sep 2023 |
| 57 | spb.ru | 8.53/10 | - | - | Aug 2022 |
| 58 | cancerresearchuk.org | 8.53/10 | 592,000 | 136,583 | Oct 2024 |
| 59 | cairn.info | 8.52/10 | 27 | 149 | Mar 2025 |
| 60 | manchester.ac.uk | 8.52/10 | 64,000 | 18,257 | Aug 2022 |
| 61 | agriculture.gouv.fr | 8.52/10 | 3,400 | 2,646 | Mar 2022 |
| 62 | ovh.net | 8.51/10 | - | - | Aug 2026 |
| 63 | uni-bremen.de | 8.51/10 | 2,000 | 1,789 | Jan 2023 |
| 64 | eu.org | 8.51/10 | - | - | Aug 2022 |
| 65 | atlasobscura.com | 8.51/10 | 1,442,400 | 356,620 | Jun 2022 |
| 66 | louvre.fr | 8.51/10 | 468,000 | 35,735 | Nov 2024 |
| 67 | uxdesign.cc | 8.50/10 | 24,300 | 29,656 | Jun 2022 |
| 68 | umontreal.ca | 8.50/10 | 3,700 | 761 | Aug 2023 |
| 69 | fastly.net | 8.49/10 | - | - | Aug 2018 |
| 70 | uni-goettingen.de | 8.49/10 | 6,400 | 3,874 | Nov 2025 |
| 71 | uni-tuebingen.de | 8.49/10 | 2,900 | 2,712 | Jun 2025 |
| 72 | tu-dresden.de | 8.49/10 | 2,300 | 3,199 | Jul 2024 |
| 73 | kvk.nl | 8.47/10 | 4,500 | 2,490 | Jul 2025 |
| 74 | uni-bonn.de | 8.46/10 | 4,100 | 2,235 | Nov 2022 |
| 75 | razorpay.com | 8.45/10 | 19,600 | 23,099 | Jan 2023 |
| 76 | 20min.ch | 8.45/10 | 7,200 | 7,842 | Jan 2023 |
| 77 | perl.org | 8.44/10 | 2,800 | 1,023 | Nov 2022 |
| 78 | payhip.com | 8.43/10 | 16,900 | 16,030 | Aug 2022 |
| 79 | sched.com | 8.41/10 | 9,000 | 2,778 | Aug 2025 |
| 80 | openlibrary.org | 8.41/10 | 175,300 | 109,746 | May 2023 |
| 81 | systeme.io | 8.40/10 | 5,900 | 3,761 | Mar 2025 |
| 82 | pp.ua | 8.37/10 | 22 | 5 | Feb 2023 |
| 83 | lodz.pl | 8.37/10 | 90 | 193 | Feb 2025 |
| 84 | devpost.com | 8.36/10 | 10,700 | 6,824 | Mar 2025 |
| 85 | genially.com | 8.36/10 | 35,200 | 20,458 | Aug 2026 |
| 86 | unt.edu | 8.36/10 | 188,300 | 23,407 | Jul 2024 |
| 87 | ufmg.br | 8.36/10 | 3,300 | 1,765 | Jul 2023 |
| 88 | uchile.cl | 8.35/10 | 1,900 | 3,976 | Jan 2022 |
| 89 | tu-darmstadt.de | 8.34/10 | 3,000 | 2,060 | Jul 2022 |
| 90 | tcd.ie | 8.34/10 | 25,400 | 17,278 | Nov 2025 |
| 91 | cvut.cz | 8.34/10 | 1,200 | 214 | Sep 2023 |
| 92 | unicamp.br | 8.34/10 | 860 | 1,061 | Aug 2026 |
| 93 | cas.cz | 8.33/10 | - | - | Dec 2024 |
| 94 | unipi.it | 8.32/10 | 1,500 | 1,950 | Oct 2024 |
| 95 | ncmec.org | 8.30/10 | 39 | 13 | Aug 2026 |
| 96 | complex.com | 8.28/10 | 794,400 | 385,429 | Jun 2022 |
| 97 | unu.edu | 8.28/10 | 16,800 | 5,872 | Aug 2024 |
| 98 | vhx.tv | 8.27/10 | 380 | 37 | Mar 2025 |
| 99 | idealist.org | 8.27/10 | 471,400 | 162,606 | May 2026 |
| 100 | com.ru | 8.27/10 | - | - | Feb 2020 |
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) →
Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).