Stop a lot of spambots from polluting your site by making visitors identify a custom word displayed as an image before commenting.
Cognito Forms lets you quickly and easily build awesome forms, surveys and more without ever leaving WordPress.
Spam Master is the Ultimate Spam Protection plugin that blocks new user registrations and post comments with Real Time anti-spam lists.
Adds CAPTCHA anti-spam methods to WordPress on the forms for comments, registration, lost password, login, or all. For WP, WPMU, and BuddyPress.
Protect your website from spam using our human friendly, fun and designed Captcha plugin
Text Domain: spam-killer Kills spam dead in its tracks. Be gone evil demon spam!
REPLACEMENT of the original Simple Trackback Validation Plugin from Miachel. Performs a simple but very effective test on all incoming trackbacks in o
Kick spam with a highly advanced email validation in comment forms, user registration and contact forms using Mailgun's Email validation service.
Enhance your Gravity Forms to include anti-spam measures originally based on the work of David Walsh's "Zero Spam" technique.
ZigTrap adds a honey trap to your comments form.
Spam BLIP stops comment spam before it is posted, using DNS blacklists, existing comments marked as spam, and user defined lists.
This is a simple plugin that adds a recaptcha validation to the bbPress 2.0 topic creation and topic reply forum.
Simple IP Ban is a lightweight ip / user agent ban plugin.
The plugin sends an email message when a comment goes to the spam folder.
A lightweight plugin to protect email addresses from email-harvesting robots by encoding them into decimal and hexadecimal entities.
Zero Spam makes blocking spam comments a cinch. Install, activate and enjoy a spam-free site.
The most advanced protection against sploggers and spam users registration, is fully WordPress,WordPress MU ,BuddyPress and bbPress 2.0 compatible
Your user can custom his own password on the registration screen with me.
WP Anti Spam can anti automated spambots or anti spams by"comment","ip","name","email","url".
Very light invisible method to block auto-spam when spam comment is posted. Pings and trackbacks cheks for real backlink.
Anti-Captcha is a transparent spam solution that does not require any end-user interaction.
Spam proof contact form that emails you the message and saves it in database.
Upon activation, SpamLord eliminates the potential for automated spam comments, as well as trackback spam.
Comment Spam Prevention without CAPTCHA. No CAPTCHA, No SPAM!
The fight against spam in comments by free service Yandex .NET Web
Confident CAPTCHA™ is a clickable, picture CAPTCHA that stops spam and malicious bots, while remaining a very easy CAPTCHA for humans to solve.
Defeat automated spambots (even the new 'learning' bots with dynamically named hidden fields) by adding a client side generated checkbox.
A lightweight Formidable Pro anti-spam add-on that requires no interaction with the user.
The AVH First Defense Against Spam plugin gives you the ability to block spammers before any content is served.