Captcha

Helpers for the reCAPTCHA API

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

A Google-style captcha for enterprise Rails apps

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

reCAPTCHA Enterprise is a service that protects your site from spam and abuse.

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-Plugin for Rails

reCAPTCHA Enterprise is a service that protects your site from spam and abuse. Note that google-cloud-recaptcha_enterprise-v1 is a version-specific client library. For most uses, we recommend installing the main client library google-cloud-recaptcha_enterprise instead. See the readme for more details.

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A simple way to add honeypot captchas to Rails forms

reCAPTCHA Enterprise is a service that protects your site from spam and abuse. Note that google-cloud-recaptcha_enterprise-v1beta1 is a version-specific client library. For most uses, we recommend installing the main client library google-cloud-recaptcha_enterprise instead. See the readme for more details.

DeathByCaptcha allows you to solve captchas with manual labor

Rack middleware Captcha verification using Recaptcha API.

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

Google reCAPTCHA v3 + Rails (integration)

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.

TwoCaptcha allows you to solve captchas with manual labor

Ruby helpers for hCaptcha

recaptcha support for decko

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.

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Anti Captcha is an automated CAPTCHA solving service

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 are human or machine.

A smart captcha library

A captcha verification approach for Rails apps, directly integrated into ActiveRecord’s validation mechanism and providing helpers for ActionController and ActionView.

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

RubyGem package for visualCaptcha's backend service

SimpleCaptcha is the simplest and a robust captcha. Its implementation requires adding up a single line in views and in controllers/models. SimpleCaptcha is available to be used with Rails2.0 or above and also it provides the backward compatibility with previous versions of Rails.

Integrate the AreYouAHuman.com CAPTCHA alternative human verification into your Ruby/Rails application

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

Drop in feedback engine with customizable fields, and captcha available

This is the simple REST client for reCAPTCHA Enterprise API V1. Simple REST clients are Ruby client libraries that provide access to Google services via their HTTP REST API endpoints. These libraries are generated and updated automatically based on the discovery documents published by the service, and they handle most concerns such as authentication, pagination, retry, timeouts, and logging. You can use this client to access the reCAPTCHA Enterprise API, but note that some services may provide a separate modern client that is easier to use.

An extension for Rack::Attack that supports responding to throttled requests with Recaptcha tags

Arithmetic Captcha

Quick little arithmetic plain-text captcha

library to access to RingCaptcha API

This plugin adds helpers for the reCAPTCHA API

A Google-style captcha for enterprise Rails apps

jQuery slide captcha system with jQuery & jQuery UI for Rails 3

AntiCaptcha api ruby wrapper

dongsx

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

Implementation of Google's ReCAPTCHA Mailhide API

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

A captcha solver (only for easy ones) gem

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.

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

Generates Text Catpchas, that are 'nice' by my own personal definition!

Due to many unrequited complaints to the recaptcha team with regard to its unreadability for real human users, this gem offers a more readable selection of captcha images.