Description of TinyCaptcha.

Antigate (Decode captcha service) wrapper for Ruby

Generates and verifies ascii art captcha.

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

Description of RailsCaptcha.

Anti-spam protection for your website

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

A captcha that uses images instead of garbled text

This plugin adds helpers for the YinXiangMa CAPTCHA API

Define questions and answers in a YAML file and validate your models with a single line of code. No more captchas or other stupid tricks.

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

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

A honeypot style captcha extension for ActiveRecord. Simple one-line inclusion in the model combined with a simple form field should trap the bad guys in the molasses.

Generates Text Catpchas, that are 'nice' by my own personal definition!

My version of SimpleCaptcha

Ruby wrapper for Yandex.Cleanweb

This is a gem wrapper for tiny captcha in C with no dependencies.

Helper for Turnstile Captcha API

Easy to use classical captcha for Rails apps

A gem to generate captcha pictures.