This plugin allows you to implement super security captcha form into web forms.
Anti-spam for comments, signups and contacts.
The Stop Spammers Plugin checks comments and logins using many methods to stop spammers.
minotaur - Rid the internet of text CAPTCHAs!
Social Networking for WordPress: profile page, forum, activity, friends, member directory, mail, chat, groups, events, gallery, mobile and more!
WP-Members™ is a free membership management framework for WordPress® that restricts content to registered users.
Use email as username to allow for single-field signup. Adds shortcode for adding registration form to post.
Spam Master is the Ultimate Spam Protection plugin that blocks new user registrations and post comments with Real Time anti-spam lists.
Registration of participants for events.
Option for up to 10 admin-defined fields in registration.
A simple plugin to help you manage user's e-mail lists. You can view and export this list in different formats to use them externally. E.g.: Crea
Help combat spam registrations by forcing the user to answer a simple math sum while registering for your BuddyPress-powered site
An easy to use powerful wordpress Captcha Plugin to prevent spam on your site.
Create amazing web forms with ease. No scripts, no HTML, no coding. Just drag-and-drop the form elements to create your professional looking form.
Protect your website from spam using our human friendly, fun and designed Captcha plugin
NO CAPTCHA Anti-Spam. Keypic checks your blogs comments against the comprehensive Keypic Web Service to see if they look like spam or not.
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