Adds the new google “Are you robot?” recaptcha to wp-login page, registration page, comment forms, buddypress registration page and contact form 7
Provides Visually Appealing Captchas to Enhance and Secure your WordPress pages. Fortified with ANTI-SPAM FILTER Protection and SPAM COUNTER.
Comment spam prevention without moderation, captchas or questions
Combat spam registrations for a BuddyPress-powered site using Google's reCAPTCHA
Protect your site against bad bots by trapping them in a virtual blackhole.
Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP blogs from spammers and unwanted persons.
Kills spam-bots, leaves humans standing. No CAPTCHAS, no math questions, no passwords, just spam blocking that stops spam-bots dead in their tracks.
This plugin adds a reCAPTCHA form to BuddyPress registration form to keep your community spam free.
Spam Master is the Ultimate Spam Protection plugin that blocks new user registrations and post comments with Real Time anti-spam lists.
Centrora Security plugin is excellent for security management. It incorporates firewall, dedicated malware scanners to enhance WordPress security.
Reduces spam and troll comments by requiring commenters to answer a question.
Create responsive contact forms, order forms, registration forms and more. For free and without ever leaving WordPress.
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.
yaCAPTCHA is a CAPTCHA plugin for WordPress that helps you block comment spam from automated bots.
Blocks referer/referral spam from accessing your site and cleans up your Google Analytics in the process!
Plugin to reject spam. Port from same author from http://www.phpbbantispam.com Actually visits the URL from commenter to spider for spamwords.
Stop a lot of spambots from polluting your site by making visitors identify a custom word displayed as an image before commenting.
This antispam plugin provides very simple(one-click) and powerful captcha for your blog.
Adds custom user fields to better manage users & members & customize login-registration page css & messages. Lets you customize the entire
MP Spam Be Gone is the simplest, most effective Spam blocker.
WordPress plugin to fight with 450+ referrer spammers (like semalt, buttons-for-website and many more).
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.
Block 250+ spam sites, such as semalt.com and 4webmasters.org! Keep your website safe and your Google Analytics statistics clean and accurate.
Simple question that blocks most spambots (and paid robots) by making them answer a common sense question
Optimize website and increase sales. Watch your visitors in real time, Click Heatmap, Conversion Tracking, Download monitor, Anti-spam, Email Reports