Solve Media CAPTCHA Replacement

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

A smart captcha library

RMagickCaptcha is a gem that implements captcha for using in Rails application.

Simple captcha image generator gem

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

Helps humankind with simpler captchas

Gem that uses RuCaptcha API to solver any type of captcha

Simple lib to generate a math_captcha to prevent spammers in form. Supports localization.

NO LONGER MAINTAINED AND NOT RECOMMENDED, AS BOTS ARE ABLE TO RESOLVE CAPTCHAS BETTER THAN HUMANS. Based on Login Attempts check if captcha is necessary. It stores a permanent cookie and uses a table for tracking login requests.

Form protection with simple captcha calculations.

MVC based Math, Logic Captcha

My version of SimpleCaptcha

Description of RailsCaptcha.

This plugin adds helpers for the YinXiangMa CAPTCHA API

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

This is mt first gem

IQ, Math Captcha

Death by Captcha Ruby implementation (HTTP API)

这是一个验证码生成器。基于rucaptcha。本人只是将他的源码拉下来。为我的网站进行适配。因为我不使用sesion.id