#recaptcha

ALTCHA

ALTCHA uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. Unlike other CAPTCHA solutions, ALTCHA is free, open-source and self-hosted, does not use cookies nor fingerprinting, does not track users, and is fully...

CAPTCHAs.IO

★ 2.2

The most stable and accurate automated captcha recognition service in the Internet market today. Supported captcha types includes 30,000+ image captchas, reCAPTCHA v2 & v3 including invisible reCAPTCHA.

MTcaptcha

★ 2.5

MTCaptcha is a smart captcha service that prioritizes privacy and accessibility. It offers an adaptive invisible noCaptcha that is easy for humans but hard for bots, making verification frictionless. MTCaptcha is GDPR and WCAG compliant, ensuring that your data is never sold or...

Procaptcha

Prosopo Procaptcha redefines user verification with a unique approach that emphasizes privacy, security, and decentralization. It's a pioneering solution designed to offer an alternative to conventional, centralized CAPTCHA systems that often compromise user privacy.