Math Captcha

Math Captcha is a 100% effective CAPTCHA for WordPress that integrates into login, registration, comments,…


dFactory 30,000+ active installations Tested with 4.9.8 Updated 1 month 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 4.6.12 Updated 2 years ago

WPBruiser {no- Captcha anti-Spam}

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


Mihai Chelaru 20,000+ active installations Tested with 4.9.8 Updated 4 weeks 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 4.4.16 Updated 3 years ago

Contact Form 7 Image Captcha

Adds a clean image captcha to Contact Form 7


KC Computing 8,000+ active installations Tested with 4.9.9 Updated 3 days ago