Death by Captcha Ruby implementation (HTTP API)

This is mt first gem

Forked from https://github.com/kares/simple_captcha

Generates and verifies ascii art captcha.

Rails mountable engine, that provides captcha support

dongsx

My version of SimpleCaptcha

IQ, Math Captcha

Form protection with simple captcha calculations.

Due to many unrequited complaints to the recaptcha team with regard to its unreadability for real human users, this gem offers a more readable selection of captcha images.

This plugin adds helpers for the YinXiangMa CAPTCHA API

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 are human or machine.

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

simple stupid captcha

A simple and custom captcha for Rails3.

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

Captcha generator for rails

ReCaptcha implements view helpers to generate ReCaptcha code, with the noscript counterpart, required methods that interface with the HTTP API for captcha verification, a DSL to generate a before_filter and the code to implement AJAX captcha validation.

Captcha-Plugin for Rails

A simple CAPTCHA implementation for Rails 5+ based on RMagick.