Sites using Rack CORS
CORS middleware for Ruby Rack applications.
Get told when a new site ships with Rack CORS.
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See how alerts work853 sites
839 found by StackScope, 14 via launch platforms
- StackScope Wider Web 821
- StackScope Discovery (Indie) 18
- Product Hunt 13
- Hacker News 1
Rack CORS has been detected on 853 launches we've crawled. The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: Amunra, today.
It's most commonly paired with Google Analytics, HSTS, and Google Tag Manager. By product type, the launches using it are most often Content (60%), E-commerce (33%), and Social (2%). By domain ending, launches using it are 99.5 times as likely as the average launch to live on a .store domain. The 14 scored launches using Rack CORS average a StackScope score of 8.4 out of 10, against 6.4 across all launches we score.
What kind of products ship with Rack CORS
446 launches
Domain endings using Rack CORS
852 sites
- .store 48.12%
- .com 39.20%
- .online 5.05%
- .ca 1.41%
- .org 1.17%
- .xyz 0.94%
- .net 0.59%
- .site 0.47%
- .uk 0.47%
- .us 0.47%
- .me 0.35%
Country
10 of 853 sites, where we are confident of the country.
-
United States
100.00%
Share of new sites using Rack CORS
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 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.
Developer Tools leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Vite
|
22.13% | 96.61% |
| #2 | – |
Rspack
|
0.39% | 1.68% |
| #3 | ▲1 |
pywb (Wayback Machine toolkit)
|
0.11% | 0.49% |
| #4 | ▼1 |
SheetJS
|
0.08% | 0.33% |
| #5 | – |
Weglot
|
0.06% | 0.25% |
| … | ||||
| #9 | ▼1 |
Rack CORS
Current page
|
0.03% | 0.15% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Developer Tools tool. All 313 in Developer Tools →
Often used with
| Tool | Launches |
|---|---|
Google Analytics
|
14 |
| HSTS | 14 |
Google Tag Manager
|
13 |
Google Search Console
|
12 |
Stripe
|
12 |
Tools most often detected on the same launches as Rack CORS.
Recent launches we can show
32 of the 853 sites using Rack CORS are product launches we list individually. The other 821 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
Wagon Apparel
E-commerce
Gifts of Hate
Social
Snack Aisle Threads
Social
Valkence Social - Talk Internet Culture
Social
SewingPattern.site | Printable PDF Sewing Patterns
Vibrato Eterno
Peter Radley
Content
Shandri
Content
Orcabonk
The Glendale Archives
Content
Novyrra
Content
Showing the most recent 12 of 32.
The StackScope API serves all 853 sites using Rack CORS, filterable and exportable, from £15 a month.