Captcha Client for YunPian.com

This is a Captcha gem for ruby. It drawing captcha image with C code so it no dependencies.

This version include two important page 'Contact' and 'Register' with the 'Math-Captcha' method submit for prevent hacker attack.

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

Captcha-Plugin for Rails

Tencent Cloud Ruby SDK is the official software development kit, which allows Ruby developers to write software that makes use of Tencent Cloud service CAPTCHA.

Display and verify arcaptcha service captcha

Use Turnstile by Cloudflare to perform captcha validation in your Rails app

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

NO LONGER MAINTAINED AND NOT RECOMMENDED, AS BOTS ARE ABLE TO RESOLVE CAPTCHAS BETTER THAN HUMANS.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.

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.

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

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

Metabypass | Ruby-based easy implementation for solving any type of captcha by Metabypass

Captcha Gem for Rails, which generates captcha image by Rust.

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

A plugin to make the process of creating a negative captcha in Rails much less painful

BrainBuster - a logic captcha for Rails