Zero Spam makes blocking spam comments a cinch. Install, activate and enjoy a spam-free site. Supports Gravity Forms, Ninja Forms, BuddyPress & mo
Max power, all-in-one, premium anti-spam. No comments & registrations spam, no contact spam, protects any forms. Just install and forget spam.
An extremely powerful WordPress anti-spam plugin that eliminates comment spam, trackback spam, contact form spam & registration spam.
This plugin allows you to implement super security captcha form into web forms.
WordPress SuperSonic with CloudFlare
This plugin allows you to implement Google Captcha into web forms.
Captcha Bank is an easy to use wordpress Captcha plugin to prevent spam on your site while letting real people pass through with ease. It's more
An extremely powerful anti-spam plugin that blocks Spam-bots without annoying captcha images.
Gwolle-GB is the WordPress guestbook you've just been looking for. Beautiful and easy.
Akismet checks your comments against the Akismet Web service to see if they look like spam or not.
Prevents automated SPAM by requiring visitors to answer a question of your choosing (plaintext or regex).
„... another popular solution to fight spam is Antispam Bee“ – Matt Mullenweg, Q&A WordCamp Europe 2014
Automatic updating of the comment blacklist in WordPress with antispam keys from GitHub.
Protect email addresses and mailto links from spambots and being used for spamming. Easy to use without configuration.
Encode mailto links, email addresses, phone numbers and any text to hide them from (spam)bots. Mailto links will be protected automatically.
Stop spam with a fun game instead of distorted text! PlayThru works effortlessly on blog comments, registration pages, lost password forms, and more.
Stop your website email addresses from being scraped and harvested by spammers with the best email obfuscator protection available.
Contact Form 7 Honeypot - Adds honeypot anti-spam functionality to CF7 forms.
Adds integration with Nocaptcha Mail.Ru service - free intelligent CAPTCHA service.
Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP blogs from spammers and unwanted persons.
The plugin sends an email message when a comment goes to the spam folder.
No spam in comments. No captcha.
CAPTCHA with the sophistication of video advertising that protects your website from spam. Make money as we take human verification to the next level.
Сaptcha generated numbers and latin characters. It is intended only for use in custom forms and displays a simple shortcode.
Simple Ajax Chat displays a fully customizable Ajax-powered chat box anywhere on your site.
Spam Master is the Ultimate Spam Protection plugin that blocks new user registrations and post comments with Real Time anti-spam lists.
Integrates reCAPTCHA anti-spam methods with WordPress sites using BuddyPress plugin, including comment and registration spam protection.
Block users using blacklists domain from registering to your WordPress site.
Inserts Google’s new reCAPTCHA into Infusionsoft web forms