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

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

BrainBuster - a logic captcha for Rails

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