Antigate (Decode captcha service) wrapper for Ruby

Generates and verifies ascii art captcha.

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

Wrapper for Captchabot.com

dongsx

A simple image captcha gem

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

A simple way to add honeypot captchas to Rails forms

This is mt first gem

Quick little arithmetic plain-text captcha

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

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

A captcha that uses images instead of garbled text

Simple gem to add captcha or negative captcha to your Rails 3 application

simple stupid captcha

adds audio support to 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.

Rails extension for Cloudflare's Turnstile CAPTCHA alternative. This gem should work with Rails 6.x and 7.x, and with Faraday 1.x and 2.x.

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

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.