Mark Jaquith

This simple plugin inserts the following into the comment form:
<blockquote>
Not <code>USER'S NAME</code>? Click here to clear this info.
</blockquote>
When clicked, the comment cookies will be cleared, and the form will become empty. This only shows up if the user is not logged in (as most comment forms have a “log out” link for them), and if the user has a comment cookie.

Forget User Info

Inserts a link into the comments form that will clear a user's comment info cookie

viher3

Cookie law is a WordPress Plugin that helps you to comply with the new European cookie law by the easiest way.
This plugin has different design customizations and it is Multilanguage.
Github project: https://github.com/viher3/easy-eu-cookie-law

Easy EU Cookie law

The easiest way to comply with the new European cookie law.

Forget User Info vs Easy EU Cookie law