Akismet Anti-Spam

Akismet checks your comments and contact form submissions against our global database of spam to…


Automattic 5+ million active installations Tested with 4.9 Updated 2 weeks ago

Antispam Bee

Easy and extremely productive spam-fighting plugin with many sophisticated solutions. Includes protection against trackback spam…


pluginkollektiv 200,000+ active installations Tested with 4.7.7 Updated 7 months ago

Email Address Encoder

A lightweight plugin to protect email addresses from email-harvesting robots by encoding them into decimal…


Till Kr├╝ss 90,000+ active installations Tested with 4.9 Updated 1 week ago

Growmap Anti Spambot Plugin

Defeat automated spambots (even the new 'learning' bots with dynamically named hidden fields) by adding…


Andy Bailey 40,000+ active installations Tested with 4.0.20 Updated 3 years ago

Spam Free WordPress

Todd Lahman's comment spam blocking plugin that blocks automated spam with zero false positives.


Todd Lahman, LLC 40,000+ active installations Tested with 4.4.12 Updated 2 years ago

Stop Spammers

Aggressive anti-spam plugin that eliminates comment spam, trackback spam, contact form spam, and registration spam.…


Bryan Hadaway 40,000+ active installations Tested with 4.8.3 Updated 3 months ago

WordPress Zero Spam

Zero Spam makes blocking spam comments a cinch. Install, activate and enjoy a spam-free site.…


Ben Marshall 20,000+ active installations Tested with 4.6.8 Updated 11 months ago

Stop Spam Comments

Dead simple and super lightweight anti-spambot WordPress plugin. No captcha, tricky questions or any other…


Pino Ceniccola 10,000+ active installations Tested with 4.4.12 Updated 2 years ago

WPBruiser {no- Captcha anti-Spam}

An extremely powerful antispam plugin that blocks spam-bots without annoying captcha images.


Mihai Chelaru 10,000+ active installations Tested with 4.8.3 Updated 2 weeks ago

Invisible Captcha

Smart invisible captcha for wordpress comments


Andrey Sorvin 10,000+ active installations Tested with 3.5.2 Updated 5 years ago

WP-Hashcash

Client-side javascript blocks all spam bots. XHTML 1.1 compliant.


Elliott Back 9,000+ active installations Tested with 3.0.5 Updated 7 years ago

Conditional CAPTCHA

Asks commenters to complete a simple CAPTCHA if they don't have a previously approved comment,…


Samir Shah 9,000+ active installations Tested with 4.7.7 Updated 12 months ago

IP Ban

Simple IP Ban is a lightweight ip / user agent ban plugin.


Sandor Kovacs 8,000+ active installations Tested with 4.7.7 Updated 11 months ago

Math Comment Spam Protection

Asks the visitor making the comment to answer a simple math question. This is intended…


Michael Woehrer 8,000+ active installations Tested with 3.0.5 Updated 7 years ago