Comment Signature provides easy way to add user's signature who already registered on that site.
Implementation of Mozilla Persona (BrowserID) for WordPress
Keep spam bots out of your site without annoying Captcha codes or faulty blacklists. Enterprise spam protection for sites of all sizes.
Add a guestbook page which uses the wordpress integrated comments.
Adds WP functions, copyright, and more to your RSS feed items.
Libpar Connect allows libertarian blogs to be seen by users of Libpar.com, and synchronises to Libpar's user database so that more people will vi
This plugin allows you to implement Google Captcha into web forms.
Easiest plugin to disable/remove comments from complete site.
Upgrade comments and sharing of your blog and engage your visitors with emotional tagging via MySmark.
Allow for the comment email notifications to be completely customized.
Modifies the Empty Spam action in WordPress to process the spam deletion in batches instead of all at once.
Subscribe to comments and notify only approved comment authors, not spammers.
WP-Ajaxify-Comments hooks into your comment form and adds AJAX functionality - no page reloads required when validating, posting or updating comments
FBtops WordPress Plugin allows you to create tops/rankings of posts based on number of facebook likes, shares or comments they receive. Great plugin!
A WordPress Project Management plugin. Project Management with WordPress has never been this easy!
RSS link for this tag.