Unobtrusive, flexible and complete spam protection for Rails applications using honeypot strategy for better user experience.

DeathByCaptcha allows you to solve captchas with manual labor

A simple way to add honeypot captchas to Rails forms

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.

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

A library to make creating negative captchas less painful

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

TwoCaptcha allows you to solve captchas with manual labor

ActsAsTextcaptcha provides spam protection for Rails models with text-based logic question captchas. Questions are fetched from Rob Tuley's textcaptcha.com They can be solved easily by humans but are tough for robots to crack.

reCAPTCHA was too much for us, so we created this. Simplest captcha ever.

Captcha-Plugin for Rails

Simple reverse captcha solution that consist in create a hidden field that should be always empty.

Anti Captcha is an automated CAPTCHA solving service

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

Rack middleware Captcha verification using Recaptcha API.

Arithmetic Captcha

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.

Despamilator is a plugin based spam detector designed for use on your web forms borne out of two annoyances: Spam being submitted in my web forms and CAPTCHAS being intrusive. Despamilator will apply some commonly used heuristics from the world of anti-spam to help you decide whether your users a...

RubyGem package for visualCaptcha's backend service

Quick little arithmetic plain-text captcha