Extract a listing of data for all commenters (email addresses, names, URLs), and an option to export that data as a CSV file.

This plugin helps you to analyze the commenters (new, inactive, top, datewise etc) and contact them via email from within the 'Manage' tab ('Tools' tab in WordPress 2.7 and above)

Empower your users with a convenient tool to conceal comments by trolls and other annoying commenters.

Highlight (or bury) extraordinary comments, and display them in a widget, archive, or both. (Extends "Featured Comments.")

A beautifully helpful dashboard for all your WordPress comments: analyze & aggregate comments, see comments insights, learn about your commenters.

This plugin shows your top 100 most influential commenters on your Wordpress blog, ordered by Alexa Rank.

Displays a count of each commenter's total number of comments (linked to those comments) next to their name on any admin page.