Block bots without annoying captchas. Cache friendly solution with rotating keys! Blocks comment, registration, and bbpress spam. Activate and done!
Add a flexible contact form to your website. Built with ContactUs.com’s cloud-based software. Customize to build beautiful, functional contact forms
Easy Email Subscription form with secured captcha.
This plugin adds a reCAPTCHA form to BuddyPress registration form to keep your community spam free.
Contact form with captcha plugin allows you to use a Google reCAPTCHA contact form on your blog. It requires PHP 5.0 or later.
WordPress user management plugin. Custom user profile, custom Login, registration with extra fields and many more.
Add some useful fields to registration and user's info
Stop a lot of spambots from polluting your site by making visitors identify a custom word displayed as an image before commenting.
Really Simple CAPTCHA is a CAPTCHA module intended to be called from other plugins. It is originally created for my Contact Form 7 plugin.
Protect WordPress login, registration and comment form with the new Google's No CAPTCHA reCAPTCHA.
This is a simple plugin that adds a recaptcha validation to the bbPress 2.0 topic creation and topic reply forum.
Adds a reCaptcha™ to your MyMail subscription forms
Very light invisible method to block auto-spam when spam comment is posted. Pings and trackbacks cheks for real backlink.
Integrates reCAPTCHA anti-spam methods with WordPress including comment and registration spam protection.
A new captcha system that uses simple question based questions instead of the other complicated image based systems. It also uses a IP/Bot monitor tha
Anti-Captcha is a transparent spam solution that does not require any end-user interaction.
The best captcha alternative. Accessible, Mobile-friendly, and Retina-ready!
By this smart plugin you can protect your login page from Brute-force attacks also you can track login history
Comment Spam Prevention without CAPTCHA. No CAPTCHA, No SPAM!
Adds a Cool Captcha to your MyMail subscription forms
The easiest way to get contact form to your site.
This plugin integrates Really Simple Captcha to the Buddypress registration page.
WPshore Contact Form 7 Spam Prevention helps you manage your Inbox to keep it free of unwanted e-mail messages.
Provides Visually Appealing Captchas to Enhance and Secure your WordPress pages. Fortified with ANTI-SPAM FILTER Protection and SPAM COUNTER.
This is a plugin to add captcha to anywhere in website's form.
Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP blogs from spammers and unwanted persons.
Exiba uma imagem com código de segurança na página de registro do teu blog. Display a captcha on signup form
This antispam plugin provides very simple(one-click) and powerful captcha for your blog.
Smooth Ajaxified Contact form that sends the data to email with spam control, database save option, form styling option and admin settings.
Easily add your Fast Secure Contact Form submissions to Constant Contact email marketing lists.