Several types of captcha to protect your site in one easy to use plugin.
Integrates CaptchaAd anti-spam methods with WordPress including comment, registration spam protection.
This is the new generation IceCaptcha plugin. The Anti-Spam security system misses no bots and does not disturb a human being.
With this plugin you can query http://www.stopforumspam.com/ database and block guest spam post (also in bbpress plugin)!
Adds a shortcode which converts email addresses to HTML entities to block spambots.
Simple plugin to prevent spam-bots registration on your site. Allows you to create an unique question, easy for humans, but not solvable for the bots.
Integrates yoCAPTCHA anti-spam methods with WordPress including comment, registration, and email spam protection. WPMU Compatible.
A simple plugin to hide emails from spambots. Simply use the shortcode [hide_email firstname.lastname@example.org] to hide email@example.com from harvesters
Integrates Picatcha image-identification CAPTCHA - anti-spam solution with WordPress including comment and registration.
MASP is an advanced spam filtering web service. It can learn content and responds to incoming threats. In short, it copes with spam efficiently.
Integrates SpamCaptcher anti-spam methods with WordPress including comment and registration spam protection.
This plugin enables you to use a Google reCAPTCHA contact form on your blog.
This plugin allows WordPress to block over 95% of spam comments using a time-based hash.
Geo-Captcha shows a captcha image only to countries you don't trust. Geo-Blacklists allows you to disable comments for some countries.
Sabre is an acronym for Simple Anti Bot Registration Engine. It's a set of counter measures against spam registration on your blog.
Integrates HappyCaptcha anti-spam methods with WordPress including comment, registration, and spam protection.
How to make your audience read more and Protect your blog form spam?. By displaying extracts from blog posts or simple messages in a CAPTCHA alternati
This plugin adds the ease of use and security of Picatcha's Pix-Captcha to your Gravity Forms in WordPress. Why settle for a difficult to use tex
With this wp antispam plugin you can stop spammers commenting on your blog with poor comments looking for links.
This plugin prevents comments spamming using language verification.
Defensio is an advanced spam, malicious content and profanity filtering web service that learns and adapts.
MP Spam Be Gone is the simplest, most effective Spam blocker.
Make users Read More related posts and protect WordPress from spam. Displays extracts from blog posts or useful messages.
SiteBrains blocks spam posts using a completely configurable set of rules. Both interactively as the user types and on our servers upon submission.
TheThe CAPTCHA is a WP plugin that blocks spam from comment boards and registration forms by generating simple tests that only humans can easily pass.
A simple comment spam prevention plugin.
This plugin is used to specify the IP written comments, to reduce comment spam issues, can be used for SEO, managing multiple sites.Please commments.p
Jax Contact form with captcha is simple plugin for your WordPress blog that enables you to have a contact form with the reCAPTCHA validation field.