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Sites built with TopoJSON

Extension of GeoJSON that encodes topology for compact geographic data in the browser.

#134 of 835 in Javascript Library First seen: Jun 11, 2026 Last seen: Aug 20, 2026 Website: github.com
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272 sites

258 found by StackScope, 14 via launch platforms

StackScope Wider Web 162 StackScope Discovery (Indie) 96 Product Hunt 11 Hacker News 2 Other 1
  • StackScope Wider Web 162
  • StackScope Discovery (Indie) 96
  • Product Hunt 11
  • Hacker News 2
  • Other 1
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 0.0% +0.0pp
Most used with HSTS, D3.js, Google Fonts
Top product types Finance, Education, Developer Tools

TopoJSON has been detected on 272 launches we've crawled, with 151 of those in August 2026 (0.0% of the month's launches so far). The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: Apocalypse Early Warning System — somethingsup.io, today.

It's most commonly paired with HSTS, D3.js, and Google Fonts. By product type, the launches using it are most often Finance (18%), Education (12%), and Developer Tools (11%). By estimated origin, India (18%) and the United Kingdom (15%) lead close together. By domain ending, launches using it are 5.2 times as likely as the average launch to live on a .org domain. The 14 scored launches using TopoJSON average a StackScope score of 5.4 out of 10, against 6.3 across all launches we score.

What kind of products ship with TopoJSON

85 launches

Finance
17.65%
Education
11.76%
Developer Tools
10.59%
Games
8.24%
Health
7.06%
Marketing
7.06%
Productivity
7.06%
Social
5.88%
AI
4.71%
Content
4.71%
E-commerce
4.71%
Hiring & HR
4.71%
Crypto
2.35%
Directory
2.35%
Design
1.18%

Domain endings using TopoJSON

272 sites

  • .com 37.13%
  • .app 9.56%
  • .org 8.09%
  • .io 5.88%
  • .ai 5.51%
  • .online 5.51%
  • .xyz 3.31%
  • .site 2.94%
  • .co 2.57%
  • .dev 2.57%
  • .net 2.57%
  • .in 2.21%
  • .us 2.21%
  • .cloud 1.84%
  • .uk 1.84%

Country-coded domains

39 of 272 sites. Mostly read from the domain ending, so the US is undercounted.

  • India India 17.95%
  • United Kingdom United Kingdom 15.38%
  • United States United States 12.82%
  • Canada Canada 7.69%
  • China China 7.69%
  • Germany Germany 5.13%
  • Italy Italy 5.13%
  • Russia Russia 5.13%
  • Türkiye Türkiye 5.13%
  • Brazil Brazil 2.56%
  • Switzerland Switzerland 2.56%
  • Czechia Czechia 2.56%
  • Indonesia Indonesia 2.56%
  • South Korea South Korea 2.56%
  • Sweden Sweden 2.56%

Share of new sites using TopoJSON

Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.

0.0%
last 7 days
+0.0pp vs prior week
0.0%
August so far
151 of 799,819 sites
272
sites all time
since Jun 2026
TopoJSON 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% Jul Aug Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery. Jun 4 · 0 / 599 = 0.0% Jun 5 · 0 / 581 = 0.0% 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 · 1 / 577 = 0.2% Jun 12 · 0 / 448 = 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 / 546 = 0.0% Jun 20 · 0 / 443 = 0.0% Jun 21 · 0 / 383 = 0.0% Jun 22 · 0 / 575 = 0.0% Jun 23 · 0 / 901 = 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 / 383 = 0.0% Jun 29 · 0 / 501 = 0.0% Jun 30 · 0 / 801 = 0.0% Jul 1 · 0 / 795 = 0.0% Jul 2 · 0 / 604 = 0.0% Jul 3 · 0 / 497 = 0.0% Jul 4 · 0 / 411 = 0.0% Jul 5 · 1 / 367 = 0.3% Jul 6 · 1 / 551 = 0.2% Jul 7 · 3 / 1167 = 0.3% Jul 8 · 2 / 12567 = 0.0% Jul 9 · 2 / 23710 = 0.0% Jul 10 · 7 / 22516 = 0.0% Jul 11 · 4 / 15953 = 0.0% Jul 12 · 2 / 20263 = 0.0% Jul 13 · 2 / 20891 = 0.0% Jul 14 · 5 / 20371 = 0.0% Jul 15 · 7 / 17212 = 0.0% Jul 16 · 2 / 14238 = 0.0% Jul 17 · 2 / 19686 = 0.0% Jul 18 · 6 / 22626 = 0.0% Jul 19 · 8 / 25896 = 0.0% Jul 20 · 2 / 22530 = 0.0% Jul 21 · 5 / 21596 = 0.0% Jul 22 · 1 / 23156 = 0.0% Jul 23 · 8 / 16808 = 0.0% Jul 24 · 2 / 12779 = 0.0% Jul 25 · 3 / 8913 = 0.0% Jul 26 · 2 / 19905 = 0.0% Jul 27 · 3 / 33718 = 0.0% Jul 28 · 4 / 37987 = 0.0% Jul 29 · 11 / 49849 = 0.0% Jul 30 · 12 / 43670 = 0.0% Jul 31 · 11 / 50748 = 0.0% Aug 1 · 15 / 50177 = 0.0% Aug 2 · 11 / 49479 = 0.0% Aug 3 · 13 / 47975 = 0.0% Aug 4 · 2 / 37157 = 0.0% Aug 5 · 4 / 32513 = 0.0% Aug 6 · 4 / 36304 = 0.0% Aug 7 · 4 / 37653 = 0.0% Aug 8 · 6 / 39506 = 0.0% Aug 9 · 7 / 33959 = 0.0% Aug 10 · 6 / 28600 = 0.0% Aug 11 · 7 / 31772 = 0.0% Aug 12 · 7 / 33067 = 0.0% Aug 13 · 6 / 49319 = 0.0% Aug 14 · 13 / 51000 = 0.0% Aug 15 · 10 / 50959 = 0.0% Aug 16 · 7 / 51271 = 0.0% Aug 17 · 5 / 40618 = 0.0% Aug 18 · 11 / 52328 = 0.0% Aug 19 · 13 / 46162 = 0.0%
Jun 4, 2026 77 days Aug 19, 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.

Javascript Library leaders

Tool % of launches % of category
#1 ▲1 jQuery 12.80% 32.48%
#2 ▼2 Motion 7.40% 18.78%
#3 ▲1 React Router 7.24% 18.36%
#4 – TanStack Router 4.26% 10.81%
#5 ▲5 Swiper 3.15% 8.00%
…
#134 ▲2 TopoJSON Current page 0.02% 0.05%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Javascript Library tool.Among July launches it ranked #126 in Javascript Library, up from #128 in June. All 835 in Javascript Library →

Often used with

Tool Launches
HSTS 10
D3.js 10
Google Fonts 8
Google Search Console 7
Google Analytics 7

Tools most often detected on the same launches as TopoJSON.

Recent launches we can show

110 of the 272 sites using TopoJSON are product launches we list individually. The other 162 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

Apocalypse Early Warning System — somethingsup.io Aug 20, 2026 Apocalypse Early Warning System — somethingsup.io Aug 19, 2026 NaviVett — Tanker Vetting & Clearance Infrastructure Aug 19, 2026 Watt Street — See what's connecting to the US power grid Aug 19, 2026 Datatox — what a data center near your home actually costs you Aug 19, 2026 Timeline History — Interactive World History Map Aug 19, 2026 Education GUTCALL | Outcome intelligence for prediction markets Aug 18, 2026 Finance ModelWhere — live AI model coverage Aug 18, 2026 Screenshot of WORLD POP ON, a launch using TopoJSON WORLD POP ON Aug 18, 2026 · score 5.0 تعمير | منصة إدارة المشاريع الهندسية من العرض حتى التسليم Aug 17, 2026 GuessUniverse – Test Your Knowledge Aug 16, 2026 Education Investors Atlas · Aktien-Screener, ETF-Vergleich & Backtesting Aug 16, 2026 Finance

Showing the most recent 12 of 110.

The StackScope API serves all 272 sites using TopoJSON, filterable and exportable, from £15 a month.

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