AntiCaptcha api ruby wrapper

Implements view helpers for the ASIRRA CAPTCHA system for Rails-based websites

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

Merb plugin that provides resource access rate limits and captcha'ing

A smart captcha library

Antigate (Decode captcha service) wrapper for Ruby

Generates and verifies ascii art captcha.

Simple negative captcha for Rails

dongsx

IQ, Math Captcha

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

This is mt first gem

create captcha for api based project

Quick little arithmetic plain-text captcha

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

Description of RailsCaptcha.

jQuery slide captcha system with jQuery & jQuery UI for Rails 3

Simple captcha image generator gem

Captcha generator for rails

A captcha that uses images instead of garbled text