Formidable Honeypot

Add SPAM protection to your Formidable forms without annoying your visitors with Captchas, math, or…


Ryan Pilling 900+ active installations Tested with 3.9.40 Updated 8 years ago

Eazy CF Captcha

Eazy C(omment)F(orm) Captcha adds a mathematic exercise to the comment form, contact form 7 &…


Tamás Kiss 900+ active installations Tested with 5.8.6 Updated 1 year ago

reCAPTCHA Jetpack

A simple plugin that adds a Google reCAPTCHA to the Jetpack contact form. Requires the…


bozdoz 800+ active installations Tested with 4.9.22 Updated 5 years ago

CrowdSec

This plugin blocks detected attackers or displays them a captcha to check they are not…


CrowdSec 800+ active installations Tested with 6.1.1 Updated 4 days ago

Blue Captcha

Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP…


Jotis Kokkalis (BlueCoder) 800+ active installations Tested with 4.2.34 Updated 8 years ago

WP No-Bot Question

Simple question that blocks most spambots (and paid robots) by making them answer a common…


Compdigitec 700+ active installations Tested with 5.4.12 Updated 2 years ago

Image Captcha

An easy to use wordpress Captcha plugin to prevent spam on your site. You can…


Captcha Soft 600+ active installations Tested with 6.0.3 Updated 3 months ago

Contact Form 7 Text CAPTCHA

Secure your website Contact Form 7 forms from bots and hackers using plugin Contact Form…


Saurav Sharma 600+ active installations Tested with 5.9.5 Updated 3 months ago

Advanced Invisible Anti-Spam

Block bots without annoying captchas. Cache friendly solution with rotating keys! Blocks comment, registration, and…


Matt Keys 600+ active installations Tested with 4.5.28 Updated 7 years ago

Spam Captcha

This plugins avoids spam actions on your website (comments and contact form if you use…


SedLex 600+ active installations Tested with 4.5.28 Updated 7 years ago

CheckBot

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


Constantine Anikin. 600+ active installations Tested with 4.0.38 Updated 8 years ago

BotBlocker

Kills spam-bots, leaves humans standing. No CAPTCHAS, no math questions, no passwords, just spam blocking…


Lform Design (Brandon Fenning) 500+ active installations Tested with 3.3.2 Updated 11 years ago

Math Quiz

Math Quiz generates dynamic math problem in the comment form to beat spam robots.


ATI 500+ active installations Tested with 5.2.17 Updated 3 years ago