Description of TinyCaptcha.

SimpleCaptcha is available to be used with Rails 3 + 4 or above and also it provides the backward compatibility with previous versions of Rails.

RubyGem package for visualCaptcha's backend service

A captcha solver (only for easy ones) gem

Captcha based on encyrpting and decrypting user data by mathematical operation

Captcha based on encyrpting and decrypting user data by mathematical operation

Ruby wrapper for Yandex.Cleanweb

API to interact with BrandCAPTCHA http://www.pontamedia.com/en/brandcaptcha/

Wrapper for Captchabot.com

Simple lib to generate a math_captcha to prevent spammers in form. Supports localization.

0-9 arası sayıları kullanarak random olarak 2 sayı seçer ve yine random olarak toplama ya da çarpma yaparak sonucu verir.

A simple way to add zero friction captchas to Rails forms

Captcha library which uses imagemagick to create captchas

Block repetetive requests from logged_in users and shows captcha.

A simple image captcha gem

Simple captcha

Description of RailsCaptcha.

Simple Audio Extension to Simple Captcha

ZeroCaptcha allows companies to solve captchas with artificial intelligence software, which is faster than humans and very accurate

Google reCaptcha helpers and verifier