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

Easy Captcha

Several types of captcha to protect your site in one easy to use plugin.


wppal 5,000+ active installations Tested with 3.5.2 Updated 4 years ago

FV Antispam

FV Antispam is a powerful and simple antispam plugin. It moves any spambot comments directly…


Foliovision 5,000+ active installations Tested with 4.8.3 Updated 12 months ago

reCAPTCHA in WP comments form

reCAPTCHA in WP comments form is an ANTISPAM tool that adds a Google reCAPTCHA to…


Joan Miquel Viadé 4,000+ active installations Tested with 4.7.7 Updated 6 months ago

WP Spam Fighter

Comment spam prevention without moderation, captchas or questions


Henri Benoit 4,000+ active installations Tested with 4.1.20 Updated 3 years ago

Kama SpamBlock

Light and invisible method to block auto-spam when spam comment is posted. Pings and trackbacks…


Kama 3,000+ active installations Tested with 4.7.7 Updated 6 months ago

WP-reCAPTCHA-bp

Integrates reCAPTCHA anti-spam methods with WordPress sites using BuddyPress plugin, including comment and registration spam…


elrata_ 2,000+ active installations Tested with 4.9 Updated 1 week ago

WP referrer spam blacklist (fight 521+ Referrer Spammers in (Google/Piwik) Analytics)

WordPress plugin to fight with 500+ referrer spammers (like semalt, buttons-for-website and many more).


Rolands Umbrovskis 1,000+ active installations Tested with 4.8.3 Updated 5 months ago

Spam Master

Spam Master is the Ultimate Spam Protection plugin that blocks new user registrations and post…


TechGasp 1,000+ active installations Tested with 4.9 Updated 7 days ago

En Spam

Block spam with cookies and JavaScript. All Spambots will remain away from your blog. Without…


Hatul 1,000+ active installations Tested with 4.9 Updated 2 weeks ago

CheckBot

This antispam plugin provides very simple(one-click) and powerful captcha for your blog.


Constantine Anikin. 1,000+ active installations Tested with 4.0.20 Updated 3 years ago

WP-Hashcash Extended

Client-side javascript blocks all spam bots. XHTML 1.1 compliant. Now with support for WordPress Versions…


Aziz B. 1,000+ active installations Tested with 3.3.2 Updated 6 years ago