This plugin prevents users from commenting or viewing your website if a comment of theirs has been marked as spam.
3D objects-based CAPTCHA to get rid of spam in comments.
SiteBrains blocks spam posts using a completely configurable set of rules.
Both interactively as the user types and on our servers upon submission.
SpiderSquash analyzes client behavior and determines whether or not a client is a legitimate user or a malicious bot.
Wordpress Security Plugin - Perform over 23 Basic Security Activities for your blog and get a free malware scan at the same time!
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The plugin provides the next generation in captcha, BotProof Captcha 2.0, to a WordPress blog comment form. It is currently version 0.9.6.8 Beta.
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