Anti-spam protection for your website

Description of RailsCaptcha.

Simple captcha

A simple and fast image captcha generator that uses opencv and memcached.

这是一个验证码生成器。基于rucaptcha。本人只是将他的源码拉下来。为我的网站进行适配。因为我不使用sesion.id

Helper for Turnstile Captcha API

dongsx

This gem enable to use Captchme. Anti spam, Monetize captcha and Audience qualification

A gem to generate captcha pictures.

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

A smart captcha library

AntiCaptcha api ruby wrapper

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

Display and verify arcaptcha service captcha

Antispam helps prevent spam in your Rails applications by checking against DNS blacklists and spam-prevention databases. It has two core features: (1) IP-based spam detection using Project Honey Pot to block known spammers automatically, and (2) content-based spam detection using Defendium’s mach...

Merb plugin that provides resource access rate limits and captcha'ing

This gem provides integration with TrustCaptcha for Ruby applications, offering CAPTCHA verification with a focus on security and privacy.

A honeypot style captcha extension for ActiveRecord. Simple one-line inclusion in the model combined with a simple form field should trap the bad guys in the molasses.

This gem enable to use Captchme. Anti spam, Monetize captcha and Audience qualification

Merb plugin that provides resource access rate limits and captcha'ing