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SimpleCaptcha is available to be used with Rails 3 or above and also it provides the backward compatibility with previous versions of Rails.
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0.0
Simple reverse captcha solution that consist in create a hidden field that should be always empty.
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0.07
Rack middleware Captcha verification using Recaptcha API.
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0.07
Rack middleware Captcha verification using Recaptcha API.
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Activity
0.01
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.
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Activity
0.0
Simple negative captcha for Rails
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0.01
A Google-style captcha for enterprise Rails apps
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0.0
Quick little arithmetic plain-text captcha
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0.0
A captcha verification approach for Rails apps, directly integrated into ActiveRecord’s validation mechanism and providing helpers for ActionController and ActionView.
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0.0
Simple negative captcha for Rails
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0.0
anti-captcha is a Ruby library for recognize captcha on anti-captcha.com
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0.0
Simple, easy captcha for Sinatra
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0.01
A Google-style captcha for enterprise Rails apps
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0.0
Merb plugin that provides resource access rate limits and captcha'ing
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0.0
Merb plugin that provides resource access rate limits and captcha'ing
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0.0
Implementation of captcha (Completely Automated Public Turing-Test to Tell Computers and Humans Apart) that is both easy to use and easy to customize/extend.
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Activity
0.07
BrainBuster - a logic captcha for Rails
Activity
0.64
A plugin to make the process of creating a negative captcha in Rails much less painful
Activity