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Captcha Tools

The captcha tools we detect on new sites, ranked by how many use each. Part of Build & Framework.

Tools tracked
55
in Build & Framework
Sites
75,926
using at least one captcha tool
Leader
92%
Cloudflare Turnstile, of these sites
Above 1%
2
tools on more than 1% of them

What we found

  1. Cloudflare Turnstile runs on more than half of the sites using a captcha tool (92%), 13 times as many sites as hCaptcha.
  2. Only 2 of the 55 captcha tools we track run on more than 1% of these sites.
  3. Among sites launched in September, Basilisk Captcha rose to #11 from #21 in August.
  4. NetEase Yidun is a regional leader, used almost entirely by sites in China.

The leading captcha tools

# Movement Tool Country Share Bar Sites 90 days
1 – Cloudflare Turnstile Privacy-friendly CAPTCHA replacement. 92% 70,041
2 – hCaptcha Privacy-friendly bot-detection challenge service, marketed as a Google reCAPTCHA alternative. 6.9% 5,228
3 – Friendly Captcha Privacy-friendly, proof-of-work CAPTCHA alternative for forms. 0.3% 256
4 ▲1 TNcode Open source slider puzzle captcha library for PHP and JavaScript forms. 0.2% 177
5 ▼1 DS CF7 Math Captcha WordPress plugin that adds a math question captcha to Contact Form 7 forms to block spam submissions. 0.2% 136
6 ▲2 Cap (CAPTCHA) Open-source proof-of-work CAPTCHA alternative using WebAssembly. 0.1% 110
7 ▲3 i13 reCaptcha WordPress and WooCommerce plugin range from I13 Web Solution that adds Google reCAPTCHA to login, registration and checkout forms. 0.1% 104
8 ▼3 Simple Cloudflare Turnstile and reCAPTCHA for Contact Form 7 WordPress plugin that adds reCAPTCHA or Turnstile verification to Contact Form 7 forms. 0.1% 93
9 ▼1 CAPTCHA 4WP WordPress plugin that adds Google reCAPTCHA and hCaptcha protection to site forms. 0.1% 92
10 – NetEase Yidun NetEase anti-bot, captcha, and fraud-prevention service. China 0.1% 78

Share is of the 75,926 sites using a captcha tool; a site can use more than one. A flag means nearly all of a tool's sites are in that country. Arrows compare each tool's rank among sites launched in September with August. The line is its share of new sites over 90 days. Showing the top 10 of 55.

Watches, exports and the API give you every captcha tool and the sites using each, from £15 a month.

Recently launched products using captcha tools

Product Launched
Vrodux ERP 19 Oct 2026
qrlia 19 Oct 2026
Scopewise 19 Oct 2026
per.hr 19 Oct 2026
DM Flow 19 Oct 2026
Weaver 19 Oct 2026

Often built with

Other kinds of tool most often found on the same sites, leaving out the plumbing every site has (DNS, CDN, hosting).