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Sites using Fly.io

Developer-focused hosting platform that runs apps and Postgres on a global edge network.

#20 of 2260 in Hosting Tracked since Apr 2026 Last seen: Sep 1, 2026 Website: fly.io
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3,761 sites

3,390 found by StackScope, 371 via launch platforms

StackScope Discovery (Indie) 1,783 StackScope Wider Web 1,607 Product Hunt 253 Hacker News 75 PeerPush 26 Other 17
  • StackScope Discovery (Indie) 1,783
  • StackScope Wider Web 1,607
  • Product Hunt 253
  • Hacker News 75
  • PeerPush 26
  • Other 17
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 0.1% +0.0pp
Most used with Tailwind CSS, Google Search Console, HSTS
Top product types Developer Tools, Productivity, Finance
Green hosting 24% vs 45% avg

Fly.io has been detected on 3,761 launches we've crawled. The 7-day rolling share is 0.1%, roughly steady week on week. Most recent detection: BoomWick, today.

It's most commonly paired with Tailwind CSS, Google Search Console, and HSTS. By product type, the launches using it are most often Developer Tools (15%), Productivity (13%), and Finance (9%). By estimated origin, the United States leads (45%), ahead of the United Kingdom (15%). By domain ending, launches using it are 1.9 times as likely as the average launch to live on a .dev domain.

What kind of products ship with Fly.io

1,793 launches

Developer Tools
15.00%
Productivity
12.88%
Finance
8.87%
AI
8.31%
Health
8.03%
Marketing
7.53%
E-commerce
7.03%
Education
6.80%
Games
6.64%
Social
6.08%
Content
5.52%
Hiring & HR
2.57%
Crypto
2.06%
Design
1.56%
Directory
1.12%

Domain endings using Fly.io

3,758 sites

  • .com 39.30%
  • .app 15.54%
  • .ai 7.88%
  • .io 6.60%
  • .dev 5.53%
  • .org 2.77%
  • .us 2.61%
  • .co 2.10%
  • .xyz 1.94%
  • .uk 1.78%
  • .net 1.73%
  • .ca 1.70%
  • .online 1.70%
  • .site 0.96%
  • .me 0.85%

Country

71 of 3,761 sites, where we are confident of the country.

  • United States United States 45.07%
  • United Kingdom United Kingdom 15.49%
  • Brazil Brazil 4.23%
  • Canada Canada 4.23%
  • Japan Japan 4.23%
  • India India 2.82%
  • Netherlands Netherlands 2.82%
  • New Zealand New Zealand 2.82%
  • Sweden Sweden 2.82%
  • Singapore Singapore 2.82%
  • Armenia Armenia 1.41%
  • Australia Australia 1.41%
  • Germany Germany 1.41%
  • Estonia Estonia 1.41%
  • Malta Malta 1.41%

Share of new sites using Fly.io

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 2026.

0.1%
last 7 days
+0.0pp vs prior week
3,761
sites all time
since Apr 2026
Fly.io daily detection trend Before 8 July 2026: launch platforms only. We began crawling the wider web on this date, so the cohort this share is measured against changes here. 5% 2% 0% Apr May Jun Jul Aug Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery. Weekly averages before this point, daily after. Jun 3 · 4 / 714 = 0.6% Jun 4 · 1 / 599 = 0.2% Jun 5 · 1 / 581 = 0.2% Jun 6 · 4 / 436 = 0.9% Jun 7 · 3 / 404 = 0.7% Jun 8 · 3 / 515 = 0.6% Jun 9 · 3 / 876 = 0.3% Jun 10 · 4 / 722 = 0.6% Jun 11 · 7 / 577 = 1.2% Jun 12 · 4 / 449 = 0.9% Jun 13 · 1 / 380 = 0.3% Jun 14 · 0 / 345 = 0.0% Jun 15 · 3 / 532 = 0.6% Jun 16 · 2 / 1052 = 0.2% Jun 17 · 0 / 907 = 0.0% Jun 18 · 2 / 674 = 0.3% Jun 19 · 7 / 547 = 1.3% Jun 20 · 1 / 443 = 0.2% Jun 21 · 1 / 383 = 0.3% Jun 22 · 2 / 576 = 0.3% Jun 23 · 1 / 900 = 0.1% Jun 24 · 6 / 737 = 0.8% Jun 25 · 2 / 618 = 0.3% Jun 26 · 3 / 534 = 0.6% Jun 27 · 3 / 431 = 0.7% Jun 28 · 0 / 383 = 0.0% Jun 29 · 5 / 503 = 1.0% Jun 30 · 2 / 801 = 0.2% Jul 1 · 2 / 795 = 0.3% Jul 2 · 2 / 604 = 0.3% Jul 3 · 3 / 499 = 0.6% Jul 4 · 2 / 411 = 0.5% Jul 5 · 1 / 367 = 0.3% Jul 6 · 3 / 551 = 0.5% Jul 7 · 6 / 1171 = 0.5% Jul 8 · 36 / 12590 = 0.3% Jul 9 · 60 / 23745 = 0.3% Jul 10 · 64 / 22551 = 0.3% Jul 11 · 50 / 15979 = 0.3% Jul 12 · 45 / 20291 = 0.2% Jul 13 · 39 / 20922 = 0.2% Jul 14 · 43 / 20408 = 0.2% Jul 15 · 31 / 17242 = 0.2% Jul 16 · 27 / 14264 = 0.2% Jul 17 · 38 / 19732 = 0.2% Jul 18 · 55 / 22700 = 0.2% Jul 19 · 48 / 26075 = 0.2% Jul 20 · 51 / 22586 = 0.2% Jul 21 · 34 / 21649 = 0.2% Jul 22 · 59 / 23202 = 0.3% Jul 23 · 40 / 16863 = 0.2% Jul 24 · 21 / 12855 = 0.2% Jul 25 · 17 / 8946 = 0.2% Jul 26 · 61 / 19976 = 0.3% Jul 27 · 60 / 33865 = 0.2% Jul 28 · 77 / 38221 = 0.2% Jul 29 · 71 / 50103 = 0.1% Jul 30 · 66 / 43951 = 0.2% Jul 31 · 101 / 51109 = 0.2% Aug 1 · 79 / 50479 = 0.2% Aug 2 · 80 / 49661 = 0.2% Aug 3 · 73 / 48190 = 0.2% Aug 4 · 73 / 37326 = 0.2% Aug 5 · 36 / 32706 = 0.1% Aug 6 · 49 / 36580 = 0.1% Aug 7 · 44 / 37888 = 0.1% Aug 8 · 56 / 39680 = 0.1% Aug 9 · 54 / 34205 = 0.2% Aug 10 · 48 / 28846 = 0.2% Aug 11 · 54 / 32017 = 0.2% Aug 12 · 54 / 33478 = 0.2% Aug 13 · 58 / 49911 = 0.1% Aug 14 · 57 / 51428 = 0.1% Aug 15 · 64 / 51492 = 0.1% Aug 16 · 81 / 51804 = 0.2% Aug 17 · 63 / 41406 = 0.2% Aug 18 · 84 / 53842 = 0.2% Aug 19 · 56 / 49414 = 0.1% Aug 20 · 77 / 66830 = 0.1% Aug 21 · 101 / 90357 = 0.1% Aug 22 · 100 / 91514 = 0.1% Aug 23 · 88 / 90226 = 0.1% Aug 24 · 82 / 78837 = 0.1% Aug 25 · 79 / 69248 = 0.1% Aug 26 · 95 / 65053 = 0.1% Aug 27 · 125 / 83367 = 0.1% Aug 28 · 86 / 83305 = 0.1% Aug 29 · 108 / 84154 = 0.1% Aug 30 · 95 / 92073 = 0.1% Aug 31 · 83 / 88567 = 0.1%
Mar 30, 2026 90 days Aug 31, 2026

The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

⋮ Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery.

Hosting leaders

Tool % of launches % of category
#1 – Vercel 14.62% 34.57%
#2 – Hostinger 11.08% 26.21%
#3 – Netlify 4.63% 10.95%
#4 – GitHub Pages 1.99% 4.72%
#5 – IONOS 1.83% 4.32%
…
#20 ▼4 Fly.io Current page 0.15% 0.36%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Hosting tool.The most common alternatives to Fly.io among indie launches are Vercel and Hostinger.Among August launches it ranked #22 in Hosting, down from #18 in July. All 2260 in Hosting →

Often used with

Tool Launches
Tailwind CSS 202
Google Search Console 198
HSTS 132
Cloudflare DNS 131
Google Fonts 126

Tools most often detected on the same launches as Fly.io.

Recent launches we can show

2,154 of the 3,761 sites using Fly.io are product launches we list individually. The other 1,607 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works

BoomWick Sep 1, 2026 Games Fit For Years — Strength that lasts. Sep 1, 2026 Health Hot Sauce Explorer — City Hot Sauce Guides, Gear, and the Pepper Index Sep 1, 2026 몇억이니 — 이름으로 찾는 재산·연수입 Sep 1, 2026 kinoh — every movie you've seen, in order Sep 1, 2026 Quietell - Private transcription for sensitive work on Windows Sep 1, 2026 Productivity QUALI — qualify. race. repeat. Sep 1, 2026 Good2Game Alpha — Spiele online mit Freunden Sep 1, 2026 Games makesaas.dev — SaaS templates you keep, not rent Sep 1, 2026 Developer Tools IBD Therapy Engine — evidence-based therapy decision support for IBD Sep 1, 2026 Health Neatply — remote job search & auto-apply Sep 1, 2026 Hiring & HR Pip — Present at the Speed of Thought Sep 1, 2026 Productivity

Showing the most recent 12 of 2,154.

The StackScope API serves all 3,761 sites using Fly.io, filterable and exportable, from £15 a month.

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.