Helper for Turnstile Captcha API

Easy to use classical captcha for Rails apps

To help with keep the bots at bay this gem helps you easily add honeypots to forms and/or obfuscate your form field names

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

A captcha that uses images instead of garbled text

Simple captcha image generator gem

Anti-spam protection for your website

Repackaged visualCaptcha's backend service, including translation and minor modification. Mainly for private use. Everything still belongs to original author: emotionLoop. ...

Ruby wrapper for Yandex.Cleanweb

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

Quick little arithmetic plain-text captcha

create captcha for api based project

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

This is mt first gem

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

Form protection with simple captcha calculations.

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

Simple negative captcha for Rails

Generates and verifies ascii art captcha.

Antigate (Decode captcha service) wrapper for Ruby