ActsAsTextcaptcha provides spam protection for Rails models with text-based logic question captchas. Questions are fetched from Rob Tuley's textcaptcha.com They can be solved easily by humans but are tough for robots to crack.

Despamilator is a plugin based spam detector designed for use on your web forms borne out of two annoyances: Spam being submitted in my web forms and CAPTCHAS being intrusive. Despamilator will apply some commonly used heuristics from the world of anti-spam to help you decide whether your users a...

Rails extension for Cloudflare's Turnstile CAPTCHA alternative. This gem should work with Rails 6.x and 7.x, and with Faraday 1.x and 2.x.

Arithmetic Captcha

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

Drop in feedback engine with customizable fields, and captcha available

RubyGem package for visualCaptcha's backend service

AntiCaptcha api ruby wrapper

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

Easy to use classical captcha for Rails apps

you will get arithmatic sum with answer you just have to compare with ur user in controller

Integrate the AreYouAHuman.com CAPTCHA alternative human verification into your Ruby/Rails application

This library can help you create a captcha in your terminal application, which may be damaged by a large influx of requests.

This version include two important page 'Contact' and 'Register' with the 'Math-Captcha' method submit for prevent hacker attack.

A simple and fast image captcha generator that uses opencv and memcached.

This gem enable to use Captchme. Anti spam, Monetize captcha and Audience qualification

This is mt first gem

create captcha for api based project

Quick little arithmetic plain-text captcha