To protect your Blog from automated spambots, this plugin adds invisible formfields to your comment form.
Todd Lahman's comment spam blocking plugin that blocks automated spam with zero false positives.
BotScout is a third-party antispam service. It maintains a database of known spammer bots which can be checked to determine if a given IP or email has …
WP Ajaxify Comments hooks into your comment form and adds AJAX functionality – no page reloads required when validating, posting or updating comments
With the release of WordPress 2.8 development of Yawasp is discontinued!!! For further protection against automated Spambots please checkout the succe …
SiteBrains blocks spam posts using a completely configurable set of rules.
Both interactively as the user types and on our servers upon submission.