Spam protection, honeypot, all-in-one, premium anti-spam plug-in. No comments spam, no users spam, no contact form spam, protects any forms.
Math Captcha is a 100% effective CAPTCHA for WordPress that integrates into login, registration, comments, Contact Form 7 and bbPress.
An easy to use wordpress Captcha plugin to prevent spam on your site. You can use Image Captcha to protect comments and the admin panel.
This antispam plugin provides very simple(one-click) and powerful captcha for your blog.
PlusCaptcha - The Easiest Captcha to Setup and Execute, with an Auto-Setup Feature! Trusted by thousands of blog, e-commerce, and government sites!
Stop spam bots from registering, logging in, filling out contact forms and commenting on your site without using annoying Captcha codes or puzzles.
The Add new recaptcha google plugin allows you to implement a super security REcaptcha form into web forms.
Captchelfie - Captcha by Selfie. Now with social capabilities.