This antispam plugin provides very simple(one-click) and powerful captcha for your blog.
This plugin protects your registered user base by preventing registration with a disposable email addresse (like the ones provided by mailinator).
Stop a lot of spambots from polluting your site by making visitors identify a custom word displayed as an image before commenting.
Anti-Captcha is a transparent spam solution that does not require any end-user interaction.
WangGuard - Wysija Newsletter Connector is a plugin for connect WangGuard plugin with Wysija Newsletter.
The AVH First Defense Against Spam plugin gives you the ability to block spammers before any content is served.
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
NURCaptcha inserts a reCAPTCHA on the Register Form of your site to protect it against spambots.
This plugin utilizes reCAPTCHA (with support for Akismet) to help your blog stay clear of spams.
The most advanced protection against sploggers and spam users registration, is fully WordPress, WordPress MU, BuddyPress and bbPress 2.0 compatible
Provides Visually Appealing Captchas to Enhance and Secure your WordPress pages. Fortified with ANTI-SPAM FILTER Protection and SPAM COUNTER.
Test for comment spam, and automatically mark bogus comments as spam.
Add Hashcash spam protection to Contact Form 7.
BotSmasher stops spam by checking comments and registrations against the BotSmasher API.
Keep Your Site Happy, add Khush Captcha Anti-SpamBot Technology to your WordPress Registration and Comment Forms.
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