This gem enable to use Captchme. Anti spam, Monetize captcha and Audience qualification

Block repetetive requests from logged_in users and shows captcha.

My version of SimpleCaptcha

Ruby wrapper for Yandex.Cleanweb

Russian Post tracking toolset, consisting tracking form bot (since Russian Post is too retarded for normal API) and captcha solver/recognizer.

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

TrustCaptcha – Privacy-first CAPTCHA solution for Ruby. GDPR-compliant, bot protection made in Europe.

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

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

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

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

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

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.

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

Quick little arithmetic plain-text captcha

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

Ruby port of VIT AutoCaptcha

create captcha for api based project

This is mt first gem

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