Cost / License
- Freemium
- Proprietary
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)
MTcaptcha is described as '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' and is an app in the online services category. There are more than 25 alternatives to MTcaptcha for a variety of platforms, including Web-based, SaaS, Self-Hosted, Docker and Wordpress apps. The best MTcaptcha alternative is Cap Captcha, which is both free and Open Source. Other great apps like MTcaptcha are Anubis, reCAPTCHA, Private Captcha and Procaptcha.
TrustSig replaces traditional CAPTCHAs with deep device fingerprinting. Puzzles and checkboxes frustrate human visitors and damage conversion rates. We built a platform that extracts hardware telemetry to block bot traffic out-of-band.

NoBot CAPTCHA API is a developer-friendly alternative to Google reCAPTCHA that helps prevent automated bot traffic without compromising user privacy.




AuthKong is a smart captcha service designed to protect websites from spam and abuse while ensuring real users can pass through effortlessly. It offers a more user-friendly and effective alternative to traditional captcha systems like reCAPTCHA, featuring easy-to-use slider and...

Protect your business from bots and spam while ensuring 100% data privacy compliance. No puzzles, no tracking – just invisible security that works.
conCaptcha is a self-hosted captcha which is faster, more user-friendly and more customizable than other captchas - available for PHP and ASP.NET websites. Users no longer have to read any annoying text images, solve difficult math equations or play any puzzle games.



GeeTest protects your websites, mobile apps and APIs from bad bot attacks with zero user friction. Its self-learning defense model based on Graph Convolutional Networks and massive volumes of biometric data collected in the past 7 years allows GeeTest to identify and mitigate...




Confident Technologies provides free CAPTCHA security software called Confident CAPTCHA, a picture CAPTCHA that stops spam and bots. Download our free CAPTCHA security software today.






A zero database architecture, powered by a proprietary hybrid in-memory indexing engine algorithm, that enables CAPTCHA authentication to be performed using minimal data bits against server memory.


