Very effective anti-spam plugin that eliminates comment spam, and registration spam. Combines many effective methods for identifying spammers and keeping them off your site. THe plugin is designed to be very light weight so it will not interfere with the operation of your website. Easy to install and default options work perfectly on most sites. Will not lock you out. No Captchas needed. Works with JetPack Protect.

Prevent people from registering with emails that contain a subdomain to help reduce spam.

Easiness and effectiveness are the keys for a valid Captcha control. DC generates appealing captcha for your WP blog without compromising usability.

Zero Spam makes blocking spam comments and registrations easy.

Adds Mathematical Captcha to be solved in your form to prevent spam.

Simple and Easy CAPTCHA. Protects WordPress forms against spam bots by using a picture based challenge enabling users to solve it quickly and easily

Make your forms intelligent. Detect and block signups and emails from disposable and fake email addresses in your Contact Form 7 forms.

No spam, no scams, just seamless experiences with Zero Spam for WordPress - the shield your site deserves.

Notify a user about when he sent comment or form via Contact Form 7 and automatically blocked spammer IP by notifier users.

Stop spam bots from registering, logging in, filling out contact forms and commenting on your site without using annoying Captcha codes or puzzles.

Yes, it actually works. Waste Spammers' time. Make Them helpless.

"My business blog was shut down by Bluehost because the spam attack on my site was..." Blocks/Total Spam Attacks: 15,284,607

A1JSpamGuard is a simple and efficient WordPress plugin to block spam in comments, registration forms, and contact forms.

This is a captcha plugin by retype method

This is a captcha plugin by retype method

A simple to use plugin that helps you keep your WordPress site clean of spam comments.

Block WordPress comment spam, trackback spam, and pingback spam through intelligent analytics instead of interactive challenge response tests.

Improve your SEO with our smart WordPress SEO Plugin in a few easy steps.

A powerful spam protection plugin for Contact Form 7 that blocks bots, spam submissions, VPN users, repeated attempts, and automated attacks — without using CAPTCHA.

Simple, lightweight, no captcha, no configuration. Just works.