This plugin enables you to use a Google reCAPTCHA contact form on your blog.
Spam Master is the Ultimate Spam Protection plugin that blocks new user registrations and post comments with Real Time anti-spam lists.
Protect your site against bad bots by trapping them in a virtual blackhole.
An easy to use wordpress Captcha plugin to prevent spam on your site. You can use Image Captcha to protect comments and the admin panel.
Plugin to reject spam. Port from same author from http://www.phpbbantispam.com Actually visits the URL from commenter to spider for spamwords.
Stop spam with a fun game instead of distorted text! PlayThru works effortlessly on blog comments, registration pages, lost password forms, and more.
Write email addresses without worrying about spambots and email harvesters.
MP Spam Be Gone is the simplest, most effective Spam blocker.
Powerful and invisible fighter against comment spam.
This antispam plugin provides very simple(one-click) and powerful captcha for your blog.
This plugin removes all HTML tags, BBCode tags and links from added comments (including link to author's website)
This plugin allows WordPress to block over 95% of spam comments using a time-based hash.
Integrates reCAPTCHA anti-spam methods with WordPress sites using BuddyPress plugin, including comment and registration spam protection.
Login Form with security, design and redirect features. Custom login WordPress client login website
Defensio is an advanced spam, malicious content and profanity filtering web service that learns and adapts.
Block 250+ spam sites, such as semalt.com and 4webmasters.org! Keep your website safe and your Google Analytics statistics clean and accurate.
Enhance your Gravity Forms to include anti-spam measures originally based on the work of David Walsh's "Zero Spam" technique.
Stop spam with a fun, fast mini-game CAPTCHA! FunCaptcha is free, and works on every desktop and mobile device. For BuddyPress, Ninja Forms, Gravity F
Add captcha to forms easily, comment form, login form, register form, rest password form, easy to use and translate ready, no spam comments!
The whole idea to this plugin is to keep spammer robots from posting on your blog, reducing the space taken by spam messages in the database, and prev
With the release of WordPress 2.8 development of Yawasp is discontinued!!! For further protection against automated Spambots please checkout the succe
Adds Graphic Captcha Protection field for login, registration, lost password, comments pages. Perfect antispam solution for your website.
The Advanced WordPress Security plugin Developed by World Web Arts to protect your wordpress website from virus and malicious attack by permission set
Very light invisible method to block auto-spam when spam comment is posted. Pings and trackbacks cheks for real backlink.
Automatic updating of the comment blacklist in WordPress with antispam keys from GitHub.
WordPress plugin to fight with 450+ referrer spammers (like semalt, buttons-for-website and many more).
Stop your website email addresses from being scraped and harvested by spammers with the best email obfuscator protection available.
Widget with simple and secure contact form.