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Sites using Rack CORS

12 launches via launch platforms Category: Developer Tools #19 of 121 in Developer Tools Tracked since Apr 2026 Last seen: Jul 6, 2026 Website: github.com

CORS middleware for Ruby Rack applications.

Found via: Product Hunt 11 · Hacker News 1 · StackScope Wider Web 28

View: Launch platforms All sources StackScope Discovery StackScope Wider Web
Last 7 days 0.0% -0.0pp
Most used with Google Analytics, HSTS, Google Search Console

Rack CORS has been detected on 12 launches we've crawled. Most recent detection: Valkence Club - Go Beyond The Feed, on July 6, 2026.

It's most commonly paired with Google Analytics, HSTS, and Google Search Console. The 12 scored launches using Rack CORS average a StackScope score of 8.3 out of 10, against 6.3 across all launches we score.

Share of new launches using Rack CORS

Each dot is one launch day. Line is the 7-day rolling average.

0.0%
last 7 days
-0.0pp vs prior week
0.0%
July so far
1 of 10,662 launches
12
launches all time
since Apr 2026
Rack CORS daily detection trend 5% 2% 0% May Jun Jul Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery. Apr 19 · 0 / 392 = 0.0% Apr 20 · 0 / 620 = 0.0% Apr 21 · 0 / 835 = 0.0% Apr 22 · 0 / 721 = 0.0% Apr 23 · 0 / 603 = 0.0% Apr 24 · 0 / 553 = 0.0% Apr 25 · 0 / 420 = 0.0% Apr 26 · 0 / 377 = 0.0% Apr 27 · 1 / 529 = 0.2% Apr 28 · 0 / 836 = 0.0% Apr 29 · 0 / 658 = 0.0% Apr 30 · 0 / 573 = 0.0% May 1 · 0 / 568 = 0.0% May 2 · 0 / 368 = 0.0% May 3 · 0 / 346 = 0.0% May 4 · 0 / 536 = 0.0% May 5 · 1 / 855 = 0.1% May 6 · 0 / 671 = 0.0% May 7 · 0 / 624 = 0.0% May 8 · 0 / 597 = 0.0% May 9 · 0 / 428 = 0.0% May 10 · 0 / 350 = 0.0% May 11 · 0 / 536 = 0.0% May 12 · 0 / 797 = 0.0% May 13 · 0 / 687 = 0.0% May 14 · 0 / 625 = 0.0% May 15 · 0 / 542 = 0.0% May 16 · 0 / 407 = 0.0% May 17 · 0 / 367 = 0.0% May 18 · 0 / 566 = 0.0% May 19 · 0 / 846 = 0.0% May 20 · 1 / 674 = 0.1% May 21 · 0 / 606 = 0.0% May 22 · 0 / 546 = 0.0% May 23 · 0 / 378 = 0.0% May 24 · 0 / 341 = 0.0% May 25 · 1 / 535 = 0.2% May 26 · 0 / 877 = 0.0% May 27 · 0 / 683 = 0.0% May 28 · 0 / 577 = 0.0% May 29 · 0 / 486 = 0.0% May 30 · 0 / 377 = 0.0% May 31 · 0 / 368 = 0.0% Jun 1 · 0 / 619 = 0.0% Jun 2 · 0 / 927 = 0.0% Jun 3 · 0 / 711 = 0.0% Jun 4 · 0 / 598 = 0.0% Jun 5 · 0 / 578 = 0.0% Jun 6 · 0 / 436 = 0.0% Jun 7 · 0 / 405 = 0.0% Jun 8 · 0 / 511 = 0.0% Jun 9 · 0 / 872 = 0.0% Jun 10 · 0 / 725 = 0.0% Jun 11 · 0 / 573 = 0.0% Jun 12 · 0 / 445 = 0.0% Jun 13 · 0 / 381 = 0.0% Jun 14 · 0 / 346 = 0.0% Jun 15 · 2 / 530 = 0.4% Jun 16 · 1 / 1047 = 0.1% Jun 17 · 0 / 899 = 0.0% Jun 18 · 0 / 672 = 0.0% Jun 19 · 0 / 544 = 0.0% Jun 20 · 0 / 443 = 0.0% Jun 21 · 0 / 384 = 0.0% Jun 22 · 2 / 574 = 0.3% Jun 23 · 0 / 899 = 0.0% Jun 24 · 0 / 739 = 0.0% Jun 25 · 0 / 619 = 0.0% Jun 26 · 0 / 533 = 0.0% Jun 27 · 0 / 433 = 0.0% Jun 28 · 0 / 385 = 0.0% Jun 29 · 0 / 503 = 0.0% Jun 30 · 0 / 803 = 0.0% Jul 1 · 0 / 799 = 0.0% Jul 2 · 0 / 604 = 0.0% Jul 3 · 0 / 498 = 0.0% Jul 4 · 0 / 411 = 0.0% Jul 5 · 0 / 367 = 0.0% Jul 6 · 1 / 552 = 0.2% Jul 7 · 0 / 929 = 0.0% Jul 8 · 0 / 752 = 0.0% Jul 9 · 0 / 688 = 0.0% Jul 10 · 0 / 564 = 0.0% Jul 11 · 0 / 448 = 0.0% Jul 12 · 0 / 397 = 0.0% Jul 13 · 0 / 552 = 0.0% Jul 14 · 0 / 885 = 0.0% Jul 15 · 0 / 738 = 0.0% Jul 16 · 0 / 820 = 0.0% Jul 17 · 0 / 658 = 0.0%
Apr 19, 2026 90 days Jul 17, 2026

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 23.05% 95.41%
#2 Rspack 0.32% 1.34%
#3 ▲1 Postman 0.10% 0.42%
#4 ▼3 Bito 0.08% 0.34%
#5 ▲2 GitHub 0.08% 0.32%
…
#19 ▲6 Rack CORS Current page 0.02% 0.08%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Developer Tools tool.Among June launches it ranked #12 in Developer Tools, up from #18 in May. All 121 in Developer Tools →

Often used with

Tool Launches
Google Analytics 12
HSTS 12
Google Search Console 11
Google Tag Manager 11
jsDelivr 10

Tools most often detected on the same launches as Rack CORS.

Most recent of 12 launches using Rack CORS

Screenshot of Valkence Club - Go Beyond The Feed, a launch using Rack CORS Valkence Club - Go Beyond The Feed Jul 6, 2026 · score 9.1 United States Social Screenshot of Valkence Connect - Your Unfair Advantage, a launch using Rack CORS Valkence Connect - Your Unfair Advantage Jun 22, 2026 · score 9.1 United States Marketing Screenshot of DealFlow, a launch using Rack CORS DealFlow Jun 22, 2026 · score 9.1 United States Screenshot of Pebira, a launch using Rack CORS Pebira Jun 16, 2026 · score 9.1 United States Screenshot of Valkence Tech - Predict What's Next, a launch using Rack CORS Valkence Tech - Predict What's Next Jun 15, 2026 · score 9.1 United States Screenshot of Waivly Referral Program - Get Rewards, a launch using Rack CORS Waivly Referral Program - Get Rewards Jun 15, 2026 · score 8.6 United States Social Screenshot of Valkence - Real-Time Internet Culture, a launch using Rack CORS Valkence - Real-Time Internet Culture May 25, 2026 · score 7.4 United States Social Screenshot of Hackster, a launch using Rack CORS Hackster May 20, 2026 · score 8.9 United States Developer Tools Screenshot of Waivly Job Submission - Free Listing, a launch using Rack CORS Waivly Job Submission - Free Listing May 5, 2026 · score 7.1 Hiring & HR Screenshot of Waivly Studio - On-Demand Growth Engine, a launch using Rack CORS Waivly Studio - On-Demand Growth Engine Apr 27, 2026 · score 7.1 Screenshot of Valkence - Internet Culture, Ranked, a launch using Rack CORS Valkence - Internet Culture, Ranked Apr 13, 2026 · score 9.1 United States Screenshot of Waivly Roadmap - Digital To Physical, a launch using Rack CORS Waivly Roadmap - Digital To Physical Apr 5, 2026 · score 6.0 Social
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