Powerful and user-friendly WordPress anti-spam defense that prevents spam on blog comments, contact forms, registrations, and everything else.

Scott Allen 100,000+ active installations Tested with 4.8.2 Updated 7 days ago

AVH First Defense Against Spam

The AVH First Defense Against Spam plugin gives you the ability to block spammers before any content is served.

Peter van der Does 9,000+ active installations Tested with 4.5.10 Updated 1 year 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 4.4.11 Updated 2 years ago

WP Spam Fighter

Comment spam prevention without moderation, captchas or questions

Henri Benoit 3,000+ active installations Tested with 4.1.19 Updated 3 years ago

Advanced WordPress Security

The Advanced WordPress Security plugin Developed by World Web Arts to protect your wordpress website from virus and malicious attack by permission set …

R K Sahoo 500+ active installations Tested with 3.9.20 Updated 3 years ago

Wild Apricot Login

Provides single sign-on service for Wild Apricot members to provide access to restricted Wild Apricot content.

Wild Apricot 600+ active installations Tested with 4.8.2 Updated 6 months ago

WP Simple SpamCheck

This plugin allows WordPress to block over 95% of spam comments using a time-based hash.

Steven de Salas 1,000+ active installations Tested with 3.4.2 Updated 5 years ago

SiteBrains Interactive 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.

SiteBrains 90+ active installations Tested with 3.2.1 Updated 6 years ago

Comment Technical Data

Adds additional technical information to comment notifications, including referrer, User-Agent, and a lot more.

WP-SpamFree 20+ active installations Tested with 3.0.5 Updated 8 years ago

Nofollow Blogroll SEO

A simple plugin that adds rel="nofollow" attribute to non-homepage Blogroll Links. Improves SEO while still giving link love to your favorit …

WP-SpamFree 500+ active installations Tested with 3.0.5 Updated 8 years ago