Websites Powered by Fly.io
13,954 websites tracked using Fly.io (PaaS) · fly.io
Fly.io is a platform-as-a-service used to deploy and host the application. Its official site is fly.io. PoweredBy tracks the websites that use Fly.io across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the paas ecosystem.
Usage trend
1K
2K
3K
4K
Aug 2022
Aug 2023
Sep 2024
Sep 2025
Sep 2026
Domains observed using Fly.io in each month's HTTP Archive crawl,
Aug 2022 to Sep 2026 · peak 3,832 in Sep 2024. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.9 s
INP 75 ms
CLS 0
TTFB 700 ms
Median site among 4,178 Fly.io sites with Chrome UX data, p75 values, Sep 2026.
Top countries
United States
2,015
India
883
United Kingdom
751
Australia
684
Canada
629
Germany
542
Brazil
514
France
505
Sites using Fly.io by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Games | 0.31% | 15 |
| Software and apps | 0.27% | 312 |
| Non-profit and religious | 0.26% | 20 |
| Finance and insurance | 0.11% | 18 |
| Pets and animals | 0.07% | 2 |
| Education | 0.07% | 35 |
| Arts and entertainment | 0.04% | 16 |
| Government | 0.04% | 3 |
| Professional services | 0.04% | 15 |
| Sports and fitness | 0.04% | 6 |
| Retail | 0.03% | 96 |
| Home and construction | 0.03% | 15 |
Share of each industry's websites with a detected stack that use Fly.io; industries come from what sites declare in their own structured data.
Top sites by authority
9+
<1% · 1 of 372 sites
8+
<1% · 18 of 7,677 sites
7+
<1% · 58 of 45,712 sites
6+
<1% · 121 of 110,136 sites
5+
<1% · 202 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Fly.io in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Fly.io
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | un.org | 9.21/10 | 2,209,200 | 439,253 | Aug 2022 |
| 2 | nsw.gov.au | 8.95/10 | 75,300 | 73,181 | Mar 2026 |
| 3 | it.com | 8.81/10 | - | - | Aug 2026 |
| 4 | dreamhost.com | 8.76/10 | 34,700 | 11,034 | Mar 2026 |
| 5 | shields.io | 8.71/10 | 1,400 | 1,735 | Aug 2022 |
| 6 | uga.edu | 8.65/10 | 234,500 | 2,950 | Aug 2026 |
| 7 | dartmouth.edu | 8.60/10 | 37,800 | 10,895 | Feb 2026 |
| 8 | starbucks.com | 8.59/10 | 2,649,300 | 229,263 | Jan 2024 |
| 9 | latribune.fr | 8.51/10 | 1,600 | 3,943 | Jul 2026 |
| 10 | au.dk | 8.50/10 | 500 | 473 | Jun 2023 |
| 11 | beyondblue.org.au | 8.44/10 | 25,700 | 13,093 | Aug 2022 |
| 12 | butterfly.org.au | 8.35/10 | 1,800 | 1,678 | Jul 2025 |
| 13 | avrotros.nl | 8.26/10 | 500 | 427 | Jan 2026 |
| 14 | fly.io | 8.23/10 | 4,000 | 5,381 | Aug 2022 |
| 15 | palletsprojects.com | 8.10/10 | 2 | 17 | Aug 2024 |
| 16 | remix.run | 8.03/10 | 11,000 | 3,334 | Aug 2022 |
| 17 | simonwillison.net | 8.03/10 | 13,100 | 18,096 | Aug 2024 |
| 18 | myswitzerland.com | 8.00/10 | 378,600 | 30,847 | Apr 2024 |
| 19 | blackdoginstitute.org.au | 7.95/10 | 18,700 | 8,081 | Aug 2022 |
| 20 | ledevoir.com | 7.92/10 | 7,800 | 9,271 | Oct 2025 |
| 21 | baeldung.com | 7.88/10 | 237,700 | 141,637 | Jul 2026 |
| 22 | reactrouter.com | 7.85/10 | 10,400 | 9,068 | Aug 2022 |
| 23 | filippo.io | 7.79/10 | 370 | 50 | Aug 2022 |
| 24 | smilingmind.com.au | 7.78/10 | 1,500 | 493 | Aug 2022 |
| 25 | raisely.com | 7.71/10 | 370 | 1,019 | Aug 2022 |
| 26 | fly.dev | 7.65/10 | - | - | Aug 2022 |
| 27 | samaltman.com | 7.64/10 | - | - | Aug 2022 |
| 28 | slaveryfootprint.org | 7.52/10 | 110 | 147 | Oct 2024 |
| 29 | deepgram.com | 7.51/10 | 37,500 | 14,485 | Nov 2025 |
| 30 | heb.com | 7.51/10 | 2,273,500 | 651,442 | Feb 2025 |
| 31 | changelog.com | 7.50/10 | 560 | 602 | Aug 2022 |
| 32 | salvationarmy.org.au | 7.50/10 | 15,300 | 10,217 | Aug 2022 |
| 33 | culturemap.com | 7.49/10 | - | 2 | May 2025 |
| 34 | climatecouncil.org.au | 7.49/10 | 5,400 | 4,074 | Jun 2024 |
| 35 | unicef.org.au | 7.46/10 | 3,900 | 3,015 | Aug 2022 |
| 36 | domain.me | 7.45/10 | 1,000 | 841 | Oct 2025 |
| 37 | rapecrisis.org.uk | 7.45/10 | 8,700 | 2,565 | Sep 2024 |
| 38 | raiselysite.com | 7.43/10 | - | - | Mar 2024 |
| 39 | phoenixframework.org | 7.41/10 | 1,100 | 393 | Aug 2022 |
| 40 | kidsweb.de | 7.40/10 | - | 9 | Apr 2025 |
| 41 | savvycal.com | 7.40/10 | 3,400 | 1,696 | Aug 2022 |
| 42 | birdlife.org.au | 7.40/10 | 13,000 | 4,488 | Jul 2023 |
| 43 | jqlang.org | 7.39/10 | 2,900 | 7,479 | Apr 2025 |
| 44 | sane.org | 7.39/10 | 5,000 | 2,081 | Jul 2023 |
| 45 | caritas.org | 7.35/10 | 5,800 | 1,880 | Aug 2026 |
| 46 | vietnamairlines.com | 7.31/10 | 98,500 | 28,172 | Feb 2026 |
| 47 | globalenergymonitor.org | 7.29/10 | 11,600 | 2,815 | Sep 2026 |
| 48 | oxfam.org.au | 7.10/10 | 750 | 961 | Aug 2022 |
| 49 | evilmartians.com | 7.09/10 | 1,200 | 1,301 | Sep 2026 |
| 50 | jepsen.io | 7.07/10 | 360 | 142 | Mar 2023 |
| 51 | scout.org | 7.04/10 | 3,300 | 2,472 | May 2023 |
| 52 | wizardzines.com | 7.02/10 | 190 | 98 | Mar 2026 |
| 53 | marineconservation.org.au | 7.02/10 | 7,700 | 1,913 | Sep 2026 |
| 54 | mentalhealth.org.nz | 7.02/10 | 6,900 | 5,215 | Aug 2023 |
| 55 | glassnode.com | 7.02/10 | 520 | 1,120 | Apr 2026 |
| 56 | flyingdoctor.org.au | 7.02/10 | 1,100 | 498 | Aug 2022 |
| 57 | pattern.com | 7.00/10 | 34,300 | 3,404 | Oct 2023 |
| 58 | datasette.io | 7.00/10 | 17 | 48 | Oct 2022 |
| 59 | supportact.org.au | 6.99/10 | 54 | 64 | Jul 2025 |
| 60 | mallofamerica.com | 6.93/10 | 461,400 | 84,601 | Nov 2024 |
| 61 | imazon.org.br | 6.93/10 | 34 | 38 | Oct 2025 |
| 62 | alliancy.fr | 6.90/10 | 5 | 37 | Jul 2026 |
| 63 | posthaven.com | 6.88/10 | 110 | 4 | Aug 2022 |
| 64 | concern.net | 6.87/10 | 2,500 | 2,511 | Mar 2024 |
| 65 | aliforneycenter.org | 6.86/10 | 1,200 | 280 | Nov 2022 |
| 66 | booqable.com | 6.83/10 | 4,100 | 2,039 | Jun 2023 |
| 67 | bsl.org.au | 6.83/10 | 62 | 97 | Jul 2026 |
| 68 | udisc.com | 6.78/10 | 147,600 | 38,058 | Aug 2022 |
| 69 | formcrafts.com | 6.76/10 | 160 | 468 | Jun 2024 |
| 70 | twoplustwo.com | 6.74/10 | 1,300 | 52 | Jul 2026 |
| 71 | ethics.org.au | 6.73/10 | 29,300 | 4,197 | Aug 2022 |
| 72 | nappy.co | 6.70/10 | 2,600 | 717 | Nov 2024 |
| 73 | cerebralpalsy.org.au | 6.70/10 | 1,600 | 566 | Jun 2025 |
| 74 | schuttrange.lu | 6.64/10 | 18 | 3 | Apr 2026 |
| 75 | javascriptweekly.com | 6.62/10 | 1,000 | 355 | Jul 2026 |
| 76 | petermac.org | 6.60/10 | 2,300 | 2,642 | Dec 2023 |
| 77 | adonisjs.com | 6.59/10 | 8,700 | 2,006 | Oct 2025 |
| 78 | websocket.org | 6.59/10 | 770 | 279 | Apr 2025 |
| 79 | bcna.org.au | 6.59/10 | 1,200 | 1,967 | May 2026 |
| 80 | internetmedicin.se | 6.57/10 | 550 | 430 | Oct 2022 |
| 81 | healthify.nz | 6.55/10 | 112,000 | 69,837 | Nov 2025 |
| 82 | nfcr.org | 6.53/10 | 14,500 | 3,041 | Jun 2026 |
| 83 | dentistry.co.uk | 6.53/10 | 1,800 | 3,557 | Jul 2026 |
| 84 | drinklmnt.com | 6.50/10 | 98,800 | 4,959 | May 2023 |
| 85 | heartfoundation.org.nz | 6.47/10 | 69,900 | 37,383 | Aug 2022 |
| 86 | northwood.edu | 6.46/10 | 39,500 | 13,642 | Nov 2025 |
| 87 | baker.edu.au | 6.45/10 | 1,300 | 949 | Aug 2022 |
| 88 | pagelines.com | 6.44/10 | - | - | Jul 2023 |
| 89 | vhv.de | 6.43/10 | 190 | 150 | Jun 2026 |
| 90 | headsupguys.org | 6.42/10 | 5,500 | 3,974 | Jun 2026 |
| 91 | newsouthbooks.com.au | 6.41/10 | 610 | 2,350 | Jun 2026 |
| 92 | aspect.org.au | 6.40/10 | 1,500 | 841 | Jul 2026 |
| 93 | stnicholascenter.org | 6.40/10 | 39,300 | 4,626 | Aug 2024 |
| 94 | parkerdewey.com | 6.39/10 | 1,100 | 875 | Oct 2024 |
| 95 | api.video | 6.38/10 | 13,200 | 2,224 | Oct 2023 |
| 96 | countingdownto.com | 6.38/10 | 37,900 | 4,683 | Aug 2025 |
| 97 | wormhole.com | 6.38/10 | 4,700 | 787 | Jan 2025 |
| 98 | dockyard.com | 6.37/10 | 790 | 381 | Apr 2023 |
| 99 | thekids.org.au | 6.33/10 | 1,600 | 1,246 | Jun 2026 |
| 100 | xgimi.com | 6.30/10 | - | - | Mar 2026 |
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).
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