visualCaptcha
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WP Content Filter
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Use this plugin to censor content on your site! Easily block out all forms of unwanted content by specifying a list of keywords to be filtered. Flexible options include advanced control over content such as strict/non-strict filtering. Flagged keywords which…
User Spam Remover
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User Spam Remover is a plugin for WordPress that automatically removes spam user registrations and other old, never-used user accounts. It also blocks the notification e-mail that WordPress normally sends to the administrator whenever a new user registers (annoying when…
Anti-spam by CleanTalk (no CAPTCHA)
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Top-rated anti-spam protection for WordPress. No CAPTCHA, no questions, no animal counting, no puzzles, no math and no spam bots. Universal AntiSpam plugin. Anti-Spam features Stops spam comments. Stops spam registrations. Stops spam contact emails. Stops spam orders. Stops spam…
Email Address Encoder
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A lightweight plugin that protects plain email addresses and mailto links from email-harvesting robots, by encoding them into decimal and hexadecimal entities. Has an effect on the posts, pages, comments, excerpts, text widgets and other filtered content. Works without JavaScript…
HumanCaptcha by Outerbridge
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Most captchas are based on the requirement to reproduce a number of randomly-generated characters (which are sometimes blurred, jiggled and/or on a fuzzy background). HumanCaptcha generates a simple question which the user must answer using logical thought. HumanCaptcha is much…
Google Captcha (reCAPTCHA)
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reCaptcha plugin is an effective security solution that protects your WordPress website forms from spam entries while letting real people pass through with ease. It can be used for login, registration, password recovery, comments, popular contact forms, and other. reCAPTCHA…
WP-SpamShield Anti-Spam
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Mailgun Email Validator
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Most email validators look for an @ and a .(dot) some go further and blacklist certain domain names. But Mailgun’s Advanced email validation service goes deeper and looks for the existence of the domain name, presence of a MX record…
Really Simple CAPTCHA
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Really Simple CAPTCHA does not work alone and is intended to work with other plugins. It is originally created for Contact Form 7, however, you can use it with your own plugin. Note: This product is “really simple” as its…
Better WordPress reCAPTCHA (support Akismet and Contact Form 7)
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