https://www.cloudflare.com/application-services/products/turnstile/

1. hCaptcha

• Website: https://www.hcaptcha.com

• Pros:

  • Free for most users (Pro plan available).

  • Privacy-focused (GDPR/CCPA compliant).

  • Often used as a drop-in replacement for reCAPTCHA.

• Cons:

  • Some users find the challenges as annoying as reCAPTCHA.

  • Can be difficult for users with accessibility needs.

2. Cloudflare Turnstile

• Website: https://www.cloudflare.com/products/turnstile/

• Pros:

  • Invisible CAPTCHA (no challenge to solve).

  • Super fast and frictionless.

  • Doesn’t track users or require cookies.

  • Free to use, even if you're not a Cloudflare customer.

• Cons:

  • Still in relatively early adoption, so community support is smaller.

3. Friendly Captcha

• Website: https://friendlycaptcha.com

• Pros:

  • Privacy-first (no user tracking, GDPR compliant).

  • No image selection – uses a cryptographic puzzle in the background.

  • Accessible and user-friendly.

• Cons:

  • Paid plans for higher usage.

  • More backend-oriented (less visible to the user).

4. GeeTest CAPTCHA

• Website: https://www.geetest.com

• Pros:

  • Uses “slide to verify” CAPTCHA – interactive and fast.

  • AI-powered risk analysis.

  • Customizable for your brand.

• Cons:

  • Mostly used in China and APAC markets.

  • Not as privacy-friendly as some others.

5. Botpoison

• Website: https://botpoison.com

• Pros:

  • Invisible protection – no user interaction.

  • Easy to integrate with JavaScript.

  • Works well with SPAs and forms.

• Cons:

  • Less proven than older CAPTCHA solutions.

  • May not work as well in extremely high-risk scenarios.

Honorable Mentions

• MTCaptcha – Enterprise-ready, privacy-focused, accessible.

• KeyCAPTCHA – Combines CAPTCHA with advertising or promotional content.

• CaptchaFox – Open-source CAPTCHA system focused on ethical data handling.

Recommendation Summary