← All technologies

Sites using Duffel

Flight booking API and travel payments platform.

#30 of 151 in API First seen: Apr 23, 2026 Last seen: Sep 1, 2026

17 sites

14 found by StackScope, 3 via launch platforms

StackScope Discovery (Indie) 10 StackScope Wider Web 4 Product Hunt 3
  • StackScope Discovery (Indie) 10
  • StackScope Wider Web 4
  • Product Hunt 3
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 0.0% +0.0pp
Most used with HSTS, Next.js, React

Duffel has been detected on 17 launches we've crawled. Most recent detection: Valyzen Travel | All-in flight prices, 3 days ago.

It's most commonly paired with HSTS, Next.js, and React.

Domain endings using Duffel

17 sites

  • .com 52.94%
  • .ai 23.53%
  • .in 11.76%
  • .app 5.88%
  • .site 5.88%

Share of new sites using Duffel

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

0.0%
last 7 days
+0.0pp vs prior week
0.0%
September so far
2 of 279,834 sites
17
sites all time
since Apr 2026
Duffel 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 Sep Weekly averages before this point, daily after. Jun 6 · 0 / 436 = 0.0% Jun 7 · 0 / 404 = 0.0% Jun 8 · 0 / 515 = 0.0% Jun 9 · 0 / 876 = 0.0% Jun 10 · 0 / 722 = 0.0% Jun 11 · 0 / 577 = 0.0% Jun 12 · 0 / 449 = 0.0% Jun 13 · 0 / 380 = 0.0% Jun 14 · 0 / 345 = 0.0% Jun 15 · 0 / 532 = 0.0% Jun 16 · 0 / 1052 = 0.0% Jun 17 · 0 / 907 = 0.0% Jun 18 · 0 / 674 = 0.0% Jun 19 · 0 / 547 = 0.0% Jun 20 · 0 / 443 = 0.0% Jun 21 · 0 / 383 = 0.0% Jun 22 · 0 / 576 = 0.0% Jun 23 · 0 / 900 = 0.0% Jun 24 · 0 / 737 = 0.0% Jun 25 · 0 / 618 = 0.0% Jun 26 · 0 / 534 = 0.0% Jun 27 · 0 / 431 = 0.0% Jun 28 · 0 / 382 = 0.0% Jun 29 · 0 / 503 = 0.0% Jun 30 · 0 / 801 = 0.0% Jul 1 · 0 / 795 = 0.0% Jul 2 · 0 / 604 = 0.0% Jul 3 · 0 / 499 = 0.0% Jul 4 · 0 / 411 = 0.0% Jul 5 · 0 / 367 = 0.0% Jul 6 · 0 / 551 = 0.0% Jul 7 · 0 / 1172 = 0.0% Jul 8 · 0 / 12591 = 0.0% Jul 9 · 0 / 23752 = 0.0% Jul 10 · 0 / 22553 = 0.0% Jul 11 · 1 / 15988 = 0.0% Jul 12 · 0 / 20295 = 0.0% Jul 13 · 0 / 20929 = 0.0% Jul 14 · 0 / 20418 = 0.0% Jul 15 · 0 / 17249 = 0.0% Jul 16 · 0 / 14270 = 0.0% Jul 17 · 0 / 19731 = 0.0% Jul 18 · 0 / 22709 = 0.0% Jul 19 · 0 / 26089 = 0.0% Jul 20 · 0 / 22592 = 0.0% Jul 21 · 0 / 21662 = 0.0% Jul 22 · 0 / 23209 = 0.0% Jul 23 · 0 / 16877 = 0.0% Jul 24 · 1 / 12861 = 0.0% Jul 25 · 0 / 8951 = 0.0% Jul 26 · 0 / 19989 = 0.0% Jul 27 · 0 / 33890 = 0.0% Jul 28 · 1 / 38233 = 0.0% Jul 29 · 0 / 50128 = 0.0% Jul 30 · 0 / 43972 = 0.0% Jul 31 · 1 / 51147 = 0.0% Aug 1 · 1 / 50536 = 0.0% Aug 2 · 0 / 49757 = 0.0% Aug 3 · 0 / 48272 = 0.0% Aug 4 · 0 / 37379 = 0.0% Aug 5 · 0 / 32721 = 0.0% Aug 6 · 0 / 36609 = 0.0% Aug 7 · 1 / 37907 = 0.0% Aug 8 · 0 / 39702 = 0.0% Aug 9 · 0 / 34236 = 0.0% Aug 10 · 0 / 28892 = 0.0% Aug 11 · 0 / 32048 = 0.0% Aug 12 · 0 / 33517 = 0.0% Aug 13 · 1 / 49986 = 0.0% Aug 14 · 1 / 51461 = 0.0% Aug 15 · 0 / 51545 = 0.0% Aug 16 · 1 / 51879 = 0.0% Aug 17 · 0 / 41478 = 0.0% Aug 18 · 3 / 53976 = 0.0% Aug 19 · 0 / 49562 = 0.0% Aug 20 · 0 / 66981 = 0.0% Aug 21 · 0 / 90499 = 0.0% Aug 22 · 0 / 91579 = 0.0% Aug 23 · 0 / 90317 = 0.0% Aug 24 · 0 / 78993 = 0.0% Aug 25 · 0 / 69447 = 0.0% Aug 26 · 0 / 65229 = 0.0% Aug 27 · 0 / 83582 = 0.0% Aug 28 · 2 / 83455 = 0.0% Aug 29 · 0 / 84382 = 0.0% Aug 30 · 0 / 92688 = 0.0% Aug 31 · 0 / 90272 = 0.0% Sep 1 · 2 / 91554 = 0.0% Sep 2 · 0 / 97182 = 0.0% Sep 3 · 0 / 91098 = 0.0%
Mar 30, 2026 90 days Sep 3, 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

API leaders

Tool % of launches % of category
#1 – Wikimedia 0.29% 36.48%
#2 – Google APIs 0.23% 28.98%
#3 – Pexels 0.08% 10.47%
#4 ▲2 FlagCDN 0.03% 3.81%
#5 – Simple Icons 0.03% 3.53%
…
#30 ▲4 Duffel Current page <0.01% 0.08%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any API tool.Among August launches it ranked #29 in API, up from #33 in July. All 151 in API →

Often used with

Tool Sites
HSTS 15
Next.js 11
React 11
Tailwind CSS 11
Stripe 9

Tools most often detected on the same sites as Duffel.

Recent launches we can show

13 of the 17 sites using Duffel are product launches we list individually. The other 4 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

Valyzen Travel | All-in flight prices Sep 1, 2026 Faretriever — We fetch your fare back Aug 28, 2026 Finance tour-az - Discover Your Next Great Adventure Aug 18, 2026 Travixo — Plan less. Experience more. Aug 18, 2026 Screenshot of SahraSafar, a launch using Duffel SahraSafar Aug 18, 2026 · score 9.1 Kosher Vacation Planning — Where to Go and How to Plan It | White Glove Itineraries Aug 16, 2026 Valyzen Travel | AI-Powered Price Negotiation Aug 13, 2026 Flybook - AI Search for Flights and Hotels Aug 7, 2026 Screenshot of TripAutomate, a launch using Duffel TripAutomate Jul 31, 2026 · score 7.6 Productivity Volta — AI-Powered Group Trip Planning Jul 28, 2026 Productivity Travelbird — Find the right flight Jul 24, 2026 EzFly — Book flights and hotels with an AI travel assistant Jul 11, 2026 Productivity

Showing the most recent 12 of 13.

The StackScope API serves all 17 sites using Duffel, 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.