Websites using Heroku
Heroku is a platform-as-a-service from Salesforce. Of the 32,312 websites we've scanned, 57 use it. Here are the most popular, where they are, what they run alongside Heroku.
Most popular websites using Heroku
The top 25 by popularity (Tranco rank) of the 57 we know of.
| Site | Industry | Rank |
|---|---|---|
 Zearn zearn.org | Educational technology | #12,415 |
 Align Technology aligntech.com | – | #13,544 |
 Infusionsoft infusionsoft.com | – | #21,555 |
 America's Test Kitchen americastestkitchen.com | – | #25,243 |
 Folger Shakespeare Library folger.edu | – | #37,385 |
 Fanatical fanatical.com | Video game | #39,088 |
 Baker Tilly bakertilly.com | – | #48,318 |
 User Interviews userinterviews.com | – | #54,891 |
 6amcity 6amcity.com | – | #90,823 |
 Shakespeare Birthplace Trust shakespeare.org.uk | – | #99,359 |
 Great Ormond Street Hospital for Children NHS Foundation Trust gosh.nhs.uk | – | #101,009 |
 Cambridge University Hospitals NHS Foundation Trust cuh.nhs.uk | – | #126,625 |
 Malala Yousafzai malala.org | – | #127,454 |
 Forever forever.com | – | #139,350 |
 PATH path.org | – | #145,018 |
 Comfort Keepers comfortkeepers.com | – | #156,658 |
 INNOQ innoq.com | – | #175,278 |
 One North, a TEKsystems company onenorth.com | – | #181,253 |
 NFX Guild nfx.com | – | #182,004 |
 Sue Ryder sueryder.org | – | #211,623 |
 Howler howler.co.za | – | #245,224 |
Berkeley Research Group thinkbrg.com | Professional service | #247,407 |
 Leoexpress leoexpress.com | – | #247,872 |
Kemira kemira.com | Chemical | #281,317 |
 Aga Khan Museum agakhanmuseum.org | – | #304,328 |
Get all 57 Heroku sites
The full list as a sheet, filtered by industry, country, popularity or site speed, with company details, contacts and email formats. Credits included to start.
What Heroku sites also use
- Google Tag Manager70%
- Cloudflare37%
- Amazon CloudFront28%
- WordPress25%
- jQuery23%
- Tailwind CSS23%
- Next.js18%
- React18%
Countries (by country domain)
- United Kingdom12%
- Brazil2%
- Mexico2%
- South Africa2%
- Czechia2%
- Canada2%
Where this comes from
We detect technologies from each site's own pages (code, headers and scripts) when it's enriched, so this covers the sites we've scanned, not the whole web, and it grows every day. Popularity is the Tranco list of the top million sites; only sites in it are named here. Updated October 2026.
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