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

.

Ruby port of VIT AutoCaptcha

anti-captcha is a Ruby library for recognize captcha on anti-captcha.com

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

ReCaptcha implements view helpers to generate ReCaptcha code, with the noscript counterpart, required methods that interface with the HTTP API for captcha verification, a DSL to generate a before_filter and the code to implement AJAX captcha validation.

Simple captcha based on plain text questions.

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

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

A simple CAPTCHA implementation for Rails 5+ based on RMagick.

Captcha generator for rails

Easy to use classical captcha for Rails apps

Captcha form Jike API

wxianfeng_simple_captcha is captcha for rails,modified from simple_captcha .

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.

ZeroCaptcha allows companies to solve captchas with artificial intelligence software, which is faster than humans and very accurate

Arithmetic Captcha

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

Submit captcha images and retrieve the text as a string.

Simple captcha