Ruby package for easy integration with the API of 2captcha captcha solving service to bypass recaptcha, hcaptcha, funcaptcha, geetest and solve any other captchas.

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.

A captcha that uses images instead of garbled text

AntiCaptcha api ruby wrapper

Captcha library which uses imagemagick to create captchas

Simple Audio Extension to Simple Captcha

A simple way to add zero friction captchas to Rails forms

ALTCHA is a free, open-source CAPTCHA alternative that protects your website from spam and abuse

Google reCaptcha helpers and verifier

Simple captcha

wxianfeng_simple_captcha is captcha for rails,modified from simple_captcha .

Ruby wrapper for Yandex.Cleanweb

SimpleCaptcha is available to be used with Rails 3 + 4 or above and also it provides the backward compatibility with previous versions of Rails.

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

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

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.

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

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.

Display and verify arcaptcha service captcha