mi13

This plugin adds a “Edit” button to your published comments on the site. And allows unregistered users of the site to edit and delete their comments.
You can prohibit the deletion of individual comments and change the appearance of the Edit button.

mi13 comment user edit

This plugin allows guests to edit their comments on your site.

A plugin to remove all pending comments from your DB in one click. A useful tool if you’ve been heavily spammed or have not managed your blog for a while and would just like a fresh start for your comments. Note that this will not modify any previous that are not marked as unapproved.

Bulk Comment Remove

A plugin to remove all pending comments from your DB in one click.

mi13 comment user edit vs Bulk Comment Remove