WP-Sweep allows you to clean up unused, orphaned and duplicated data in your WordPress. It also optimizes your database tables.
WordPress developer-friendly custom fields for post types, taxonomy terms, users, comments, widgets, options and more.
This plugin allow admin to add custom fields in comment area. These fields are saved as comment meta and is displayed under comment text.
Easily move comments between posts and pages, change comment threading, and assign comments to different authors.
Add private notes to WordPress comments with an option to email the original commenter.