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Sites using Cap (CAPTCHA)

Open-source proof-of-work CAPTCHA alternative using WebAssembly.

#5 of 36 in Captcha First seen: Jul 8, 2026 Last seen: Aug 25, 2026

24 sites

23 found by StackScope, 1 via launch platforms

StackScope Wider Web 19 StackScope Discovery (Indie) 4 Product Hunt 1
  • StackScope Wider Web 19
  • StackScope Discovery (Indie) 4
  • Product Hunt 1
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 0.0% +0.0pp
Most used with Cloudflare DNS, Cloudflare, Google Analytics
Top product types Developer Tools, E-commerce, Health

Cap (CAPTCHA) has been detected on 24 launches we've crawled, with 17 of those in August 2026 (0.0% of the month's launches so far). Most recent detection: All your customer ratings. One trusted report. · TrustReport.eu, yesterday.

It's most commonly paired with Cloudflare DNS, Cloudflare, and Google Analytics. By product type, the launches using it are most often Developer Tools (40%), E-commerce (20%), and Health (20%).

What kind of products ship with Cap (CAPTCHA)

10 launches

Developer Tools
40.00%
E-commerce
20.00%
Health
20.00%
Education
10.00%
Social
10.00%

Domain endings using Cap (CAPTCHA)

24 sites

  • .com 54.17%
  • .io 8.33%
  • .ai 4.17%
  • .ch 4.17%
  • .dev 4.17%

Share of new sites using Cap (CAPTCHA)

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
17 of 1,291,494 sites
24
sites all time
since Jul 2026
Cap (CAPTCHA) 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 · 0 / 795 = 0.0% Jul 2 · 0 / 604 = 0.0% Jul 3 · 0 / 497 = 0.0% Jul 4 · 0 / 411 = 0.0% Jul 5 · 0 / 367 = 0.0% Jul 6 · 0 / 551 = 0.0% Jul 7 · 0 / 1171 = 0.0% Jul 8 · 1 / 12581 = 0.0% Jul 9 · 0 / 23728 = 0.0% Jul 10 · 0 / 22536 = 0.0% Jul 11 · 0 / 15969 = 0.0% Jul 12 · 1 / 20283 = 0.0% Jul 13 · 1 / 20910 = 0.0% Jul 14 · 0 / 20396 = 0.0% Jul 15 · 0 / 17219 = 0.0% Jul 16 · 0 / 14254 = 0.0% Jul 17 · 1 / 19715 = 0.0% Jul 18 · 0 / 22670 = 0.0% Jul 19 · 1 / 26032 = 0.0% Jul 20 · 0 / 22566 = 0.0% Jul 21 · 0 / 21628 = 0.0% Jul 22 · 0 / 23191 = 0.0% Jul 23 · 0 / 16857 = 0.0% Jul 24 · 0 / 12843 = 0.0% Jul 25 · 0 / 8941 = 0.0% Jul 26 · 0 / 19959 = 0.0% Jul 27 · 0 / 33804 = 0.0% Jul 28 · 0 / 38136 = 0.0% Jul 29 · 2 / 49965 = 0.0% Jul 30 · 0 / 43826 = 0.0% Jul 31 · 0 / 50946 = 0.0% Aug 1 · 0 / 50342 = 0.0% Aug 2 · 1 / 49601 = 0.0% Aug 3 · 0 / 48139 = 0.0% Aug 4 · 0 / 37266 = 0.0% Aug 5 · 0 / 32638 = 0.0% Aug 6 · 0 / 36489 = 0.0% Aug 7 · 2 / 37799 = 0.0% Aug 8 · 0 / 39622 = 0.0% Aug 9 · 3 / 34136 = 0.0% Aug 10 · 0 / 28755 = 0.0% Aug 11 · 0 / 31932 = 0.0% Aug 12 · 0 / 33332 = 0.0% Aug 13 · 0 / 49637 = 0.0% Aug 14 · 3 / 51243 = 0.0% Aug 15 · 1 / 51310 = 0.0% Aug 16 · 0 / 51592 = 0.0% Aug 17 · 0 / 41157 = 0.0% Aug 18 · 0 / 53718 = 0.0% Aug 19 · 0 / 49198 = 0.0% Aug 20 · 2 / 66547 = 0.0% Aug 21 · 2 / 90045 = 0.0% Aug 22 · 2 / 91215 = 0.0% Aug 23 · 0 / 89616 = 0.0% Aug 24 · 0 / 78111 = 0.0% Aug 25 · 1 / 68054 = 0.0%
Jul 1, 2026 56 days Aug 25, 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

Captcha leaders

Tool % of launches % of category
#1 – Cloudflare Turnstile 1.28% 94.03%
#2 – hCaptcha 0.08% 5.79%
#3 Friendly Captcha <0.01% 0.31%
#4 TNcode <0.01% 0.12%
#5 Cap (CAPTCHA) Current page <0.01% 0.09%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Captcha tool. All 36 in Captcha →

Often used with

Tool Launches
Cloudflare DNS 1
Cloudflare 1
Google Analytics 1
Cloudflare Web Analytics 1
Google Tag Manager 1

Tools most often detected on the same launches as Cap (CAPTCHA).

Recent launches we can show

5 of the 24 sites using Cap (CAPTCHA) are product launches we list individually. The other 19 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

All your customer ratings. One trusted report. · TrustReport.eu Aug 20, 2026 Relay ITSM — the AI service desk your people actually use Aug 14, 2026 Capcat – Invisible open-source CAPTCHA alternative Jul 17, 2026 Developer Tools Storyplane: turn a request into shipped, signed-off software Jul 12, 2026 Developer Tools MonkeyCode AI Jul 8, 2026 Developer Tools

The StackScope API serves all 24 sites using Cap (CAPTCHA), filterable and exportable, from £15 a month.

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