Dead simple and super lightweight anti-spambot WordPress plugin. No captcha, tricky questions or any other user interaction required at all.
Akismet checks your comments against the Akismet Web service to see if they look like spam or not.
An exceptionally powerful WordPress anti-spam plugin that eliminates comment spam, trackback spam, contact form spam & registration spam.
WordPress plugin to fight with more than 270 referrer spammers (like semalt, buttons-for-website and many more).
Todd Lahman's comment spam blocking plugin that blocks automated spam with zero false positives.
Zero Spam makes blocking spam comments a cinch. Install, activate and enjoy a spam-free site. Supports Gravity Forms, Ninja Forms, BuddyPress & mo
Comment Spam Prevention without CAPTCHA. No CAPTCHA, No SPAM!
Zero Spam makes blocking spam comments and registrations easy.
Spam BLIP stops comment spam before it is posted, using DNS blacklists, existing comments marked as spam, and user defined lists.
Provides a configurable limit on the length of comments left in the comment form, with a dynamically updated character count displayed for the user.
Prevents automated SPAM by requiring visitors to answer a question of your choosing (plaintext or regex).
No spam in comments. No captcha.
Add an easy-to-use spam filter to your comment form.
Are you frustrated by using CAPTCHAS in comments? We provide you a good and simple solution to combat bot spam and human spam without captcha or calcu
Comment spam prevention without moderation, captchas or questions
No spam in comments. blocked by Invisible internal token-code with ajax.This is not used CAPTCHA.
Block bots without annoying captchas. Cache friendly solution with rotating keys! Blocks comment, registration, and bbpress spam. Activate and done!
WP Anti Spam can anti automated spambots or anti spams by"comment","ip","name","email","url".
WP True Typed is an anti-spam plugin to protect your site from comment spam.
Super Simple Anti Spam for WordPress is anti spam plugin (for comments and trackbacks), while not having to moderate and / or edit a single setting.
Convatic is a revolutionary social commenting system for websites. This plugin overlays and plays nicely with themes and other plugins. Convatic promo
DAUnCL helps you keep your comments clean from spam links left by automated or manual comment spammers who are after your valueable traffic. Based on
Kills spam-bots, leaves humans standing. No CAPTCHAS, no math questions, no passwords, just spam blocking that stops spam-bots dead in their tracks.
With this wp antispam plugin you can stop spammers commenting on your blog with poor comments looking for links.
Check comment against the SpamBot Search Tool using the IP address, the email and the name of the poster as search criteria.
This plugin prevents comments spamming using language verification.
Stop user to submit a web address on the very first comments on any post and send those comments to spam folder.
MP Spam Be Gone is the simplest, most effective Spam blocker.
SiteBrains blocks spam posts using a completely configurable set of rules. Both interactively as the user types and on our servers upon submission.