Top Alternatives to mCaptcha in 2026

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...

Arkose Labs

★ 2.8

The Arkose Labs platform undermines the economic drivers behind fraud until perpetrators are compelled to abandon attacks. Real-time risk classification of traffic with interactive enforcement challenges, the solution defeats automated attacks...

Cloudflare Turnstile

★ 3.0

Turnstile is Cloudflare's smart CAPTCHA alternative. It automatically chooses from a rotating suite of non-intrusive browser challenges based on telemetry and client behavior exhibited during a session.

Friendly Captcha

Friendly Captcha is a tool for preventing spam on your website.

InputGuard

★ 1.6

InputGuard is the privacy friendly alternative to reCAPTCHA or other captcha tools.

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.

Trustcaptcha

★ 1.3

Trustcaptcha is your user-friendly CAPTCHA solution for preventing spam and bot attacks on your website with a focus on GDPR compliance and UX.