Stop spam bots from registering, logging in and commenting on your site without using annoying Captcha codes, puzzles or faulty blacklists.
Protect your blog from login brute force attacks adding a captcha on login page of your site
This plugin allows you to implement super security captcha form into web forms.
This plugin allows you to implement Google Captcha into web forms.
Stop your website email addresses from being scraped and harvested by spammers with the best email obfuscator protection available.
Сaptcha generated numbers and latin characters. It is intended only for use in custom forms and displays a simple shortcode.
Math Captcha is a 100% effective CAPTCHA for WordPress that integrates into login, registration, comments, Contact Form 7 and bbPress.
The Add new recaptcha google plugin allows you to implement a super security REcaptcha form into web forms.
A lightweight Formidable Pro anti-spam add-on that requires no interaction with the user.
This antispam plugin provides very simple(one-click) and powerful captcha for your blog.
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.
A customisable human detection plugin, that isn't annoying. Seriously.
This plugin adds a new form of captcha to your Buddy Press registration and comment forms. Use this plugin to prevent bots from spamming your website
Keep Your Site Happy, add Khush Captcha Anti-SpamBot Technology to your WordPress Registration and Comment Forms.