Todd Lahman's comment spam blocking plugin that blocks automated spam with zero false positives.
This plugin will make your blog more secure by adding rules which spambots will not pass.
BotSmasher stops spam by checking comments and registrations against the BotSmasher API.
The Advanced WordPress Security plugin Developed by World Web Arts to protect your wordpress website from virus and malicious attack by permission set
WP True Typed is an anti-spam plugin to protect your site from comment spam.
WangGuard - MailPoet Connector is a plugin for connect WangGuard plugin with MailPoet.
Extremely simple, 0 configuration and 0 user/admin-interaction anti-spam plugin.
Secure & Monetize your site with Solve Media's CAPTCHA replacement.
minotaur - Rid the internet of text CAPTCHAs!
This plugin protects your registered user base by preventing registration with a disposable email addresse (like the ones provided by mailinator).
This plugin adds a new form of captcha to your Buddy Press registration and comment forms. Use this plugin to prevent bots from spamming your website
Test for comment spam, and automatically mark bogus comments as spam.
Add Hashcash spam protection to Contact Form 7.
Keep Your Site Happy, add Khush Captcha Anti-SpamBot Technology to your WordPress Registration and Comment Forms.
minteye - STOP SPAM, MAKE MONEY!
Bloquea el spam de todo tipo de robots con un captcha que es invisible para los usuarios de tu web o blog.
Several types of captcha to protect your site in one easy to use plugin.
This plugin detects temporary email addresses like mailinator, not connectable email addresses and helps to keep the userbase and comments clean.
Integrates CaptchaAd anti-spam methods with WordPress including comment, registration spam protection.
This is the new generation IceCaptcha plugin. The Anti-Spam security system misses no bots and does not disturb a human being.
Easy to use WordPress plugin to insert any Ads to your posts and BuddyPress sections.
Block visitors based on the country they are visiting from. It can be very useful for websites targeting a specific country or region to block visito
Smart invisible captcha for wordpress comments
Uses CloudFlare IP Geolocation and poses the question; what is your country code?
jQuery UI Slider Captcha
Integrates Picatcha image-identification CAPTCHA - anti-spam solution with WordPress including comment and registration.
Jackals build automated bots and spiders to crawl through the world wide web looking for vulnerable email addresses to add to their spam lists. Genera